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CN1250283A - Tunable increasing wave/decaying wave multiplexer - Google Patents

Tunable increasing wave/decaying wave multiplexer Download PDF

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Publication number
CN1250283A
CN1250283A CN99119420A CN99119420A CN1250283A CN 1250283 A CN1250283 A CN 1250283A CN 99119420 A CN99119420 A CN 99119420A CN 99119420 A CN99119420 A CN 99119420A CN 1250283 A CN1250283 A CN 1250283A
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China
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wavelength
light
optical
waveguide array
optical waveguide
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CN99119420A
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Chinese (zh)
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金贤洙
韩东均
姜熙春
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Samsung Electronics Co Ltd
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Samsung Electronics Co Ltd
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Publication of CN1250283A publication Critical patent/CN1250283A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/0204—Broadcast and select arrangements, e.g. with an optical splitter at the input before adding or dropping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission
    • H04B10/2581—Multimode transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/0209—Multi-stage arrangements, e.g. by cascading multiplexers or demultiplexers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/02—Wavelength-division multiplex systems
    • H04J14/0201—Add-and-drop multiplexing
    • H04J14/0202—Arrangements therefor
    • H04J14/021—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM]
    • H04J14/0212—Reconfigurable arrangements, e.g. reconfigurable optical add/drop multiplexers [ROADM] or tunable optical add/drop multiplexers [TOADM] using optical switches or wavelength selective switches [WSS]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Optical Communication System (AREA)
  • Optical Integrated Circuits (AREA)

Abstract

Provided is a tunable increasing wave/decaying wave multiplexer (TADM) composed of a bidirectional optical wavelength multiplexer/multidemultiplexer. The TADM comprises a first optical wavelength multiplexer/multidemultiplexer including an input interface and an output interface; a second optical wavelength multiplexer/multidemultiplexer including an increasing wave interface, a decaying wave interface and an optical switch. When all interfaces are used as AWG multiplexer/multidemultiplexer, two multiplexers/multidemultiplexers can be used rather than four and when using an additional increasing wave/decaying wave channel, using two rather than one multiplexer/multidemultiplexer to realize TADM.

Description

Tunable ripple/the decaying wave multiplexer that increases
The present invention relates to the tunable ripple/decaying wave multiplexer (TAMD) that increases, it is used for relating to the TADM that is made of bidirectional optical wavelength multiplexer/demultiplexer more specifically by sending data to being increased optional wavelength by the input light of a plurality of wavelength multiplexings or deducting optional wavelength.
Common, use the TADM of optical wavelength multiplexer/demultiplexer to comprise four interfaces, promptly input interface, output interface, increase the ripple interface and subtract the ripple interface.When the input with any wavelength was increased the ripple interface and receives, the path of input was changed by switch, and the corresponding certain wavelengths that increases the ripple input wavelength is output to and subtracts the ripple interface.When using the waveguide optical grating multiplexer/demultiplexer of arranging to be arranged on all interfaces, each interface is used an optical wavelength multiplexer/demultiplexer.When using the additional ripple/when subtracting the ripple channel, must use two optical wavelength multiplexer/demultiplexers of increasing.
Fig. 1 is the schematic diagram according to the TADM structure of four multiplexer/demultiplexers of use of conventional art and a heat-optical switch.First order waveguide grid multiplexer/demultiplexer (AWG1) 11, second order waveguide grid multiplexer/demultiplexer (AWG2) 12, the 3rd arranges waveguide grid multiplexer/demultiplexer (AWG3) 13, the 4th arranges waveguide grid multiplexer/demultiplexer (AWG4) 14 is used as input interface respectively, and to the original wavelength of they inputs, increase the wavelength that the input of ripple interface increases, and original wavelength is increased ripple and the wavelength that subtracts ripple from output interface output, promptly subtract the ripple interface, from the wavelength of this interface output being subtracted ripple.Heat-optical switch 15 be used for determining the wavelength that will be received from AWG1 11A,WG2 12 which send to output interface and which outputed to and subtract the ripple interface.Here, AWG1 11 and AWG2 12 will be distributed in the waveguide respectively according to wavelength by the multiplexed wavelength of a waveguide input.The dispersed wavelength that AWG13 and AWG14 will be output focuses on a certain waveguide.
Fig. 2 illustrates the schematic diagram according to the additional structure that increases/subtract channel realization TADM of the use of conventional art.Two optical wavelength multiplexer/demultiplexers, the AWG2 22 that promptly must use the AWG1 21 that is used as input interface and be used as output interface is to realize TADM.Also comprise and be used to switch the heat-optical switch 23 of the optical path between the input and output interface and increase/subtract channel.
As mentioned above, according to traditional technology, in order to realize TADM,, the optical wavelength multiplexer/demultiplexer increases ripple/when subtracting the ripple interface, must use four multiplexer/demultiplexers when being used as.When using additional increasing/when subtracting channel, must use two multiplexer/demultiplexers.Yet, when light when multiplexer/demultiplexer arrives the another one multiplexer/demultiplexer, may produce phase error and amplitude error, this is owing to be used for the multiplexer/demultiplexer of TADM trickle variation to take place aspect characteristic because of the heterogeneity of production process.Accordingly, the wavelength characteristic of TADM element also reduces.
An object of the present invention is to provide a kind of TADM, can under the situation of using less element, increase and reduce wavelength by it.
Accordingly, in order to realize above-mentioned purpose, a kind of tunable increasing/subtract multiplexer (TADM) is provided, it is used for increased any wavelength or the minimizing a plurality of wavelength of the microscler one-tenth of random wave and the output device light of synthetic wavelength to some extent by multiplexed input light, TADM comprises first optical wavelength multiplexer/demultiplexer, this demultiplexer comprises an input interface, to this interface import a plurality of wavelength by multiplexed light; An output interface, the light that is used for having new wavelength joins multiplexed input light, has the subtracting in the glistening light of waves of predetermined wavelength, and will be outputed to the wavelength that is synthesized by multiplexed light, and a plurality of waveguides, each waveguide all inputs or outputs the light with specific wavelength; Second optical wavelength multiplexer/demultiplexer, it comprises and increases the ripple interface, this interface is imported by the multiplexed light that increases wavelength newly, subtract the ripple interface, be used for multiplexed light is outputed to presetted wavelength, the multiplexed light that this wavelength is input to input interface subtracts ripple and forms, and a plurality of waveguides, each waveguide inputs or outputs the light with predetermined wavelength, and optical switch, be used for by being included in a plurality of wavelength shift light paths of first and second optical wavelength multiplexers/demultiplexer, and determine to be transported to output interface and with the input of ripple interface with increase the wavelength of ripple.
In order to realize above-mentioned purpose, another tunable ripple/decaying wave multiplexer that increases is provided, it comprises a plurality of ripple channels that increase, this channel input had the light that increases wavelength, and a plurality of ripple channels that subtract, has the light that reduces wavelength from this channel output, this multiplexer is used for and will be added to by the wavelength that increases ripple channel input by multiplexed light to form a plurality of wavelength or output by subtracting the ripple channel and carry out the light that wavelength reduces and being used for and will being outputed to the wavelength that is synthesized by multiplexed light, tunable ripple/decaying wave multiplexer/the demultiplexer that increases of the present invention also comprises an optical wavelength multiplexer/demultiplexer, it comprises an input interface, to this interface import a plurality of wavelength by multiplexed light, an output interface, be used for the light with the wavelength by increasing ripple channel input is increased wavelength, subtract ripple to having the light that outputs to the wavelength that subtracts the ripple channel, and will be outputed to the wavelength that is synthesized by multiplexed light, and a plurality of waveguides, be used to input or output light with specific wavelength, and optical switch, be used for changing light paths by a plurality of waveguides that are included in optical wavelength multiplexer/demultiplexer, and by input channel with increase and determine the wavelength that will be sent to delivery channel and subtract the ripple channel in the wavelength of ripple channel input.
Can clearer understanding be arranged to above-mentioned purpose of the present invention and advantage by detailed description below in conjunction with respective drawings.
Fig. 1 is the schematic diagram according to the TADM structure of conventional art;
Fig. 2 illustrate according to the use of conventional art additional increase ripple/the subtract structural representation of the TADM of ripple channel;
Fig. 3 is according to the structural representation that is used for bidirectional optical wavelength multiplexer/demultiplexer of TADM of the present invention;
Fig. 4 and Fig. 5 are the structural representation according to the TADM of two optical wavelength multiplexer/demultiplexers of use of the present invention and heat-optical switch; And
Fig. 6 illustrates the structural representation according to the TADM of use optical wavelength multiplexer/demultiplexer of the present invention and heat-optical switch.
After this, will be described in more detail the present invention with reference to corresponding accompanying drawing.
Fig. 3 illustrates the structural representation according to bidirectional optical wavelength multiplexer/demultiplexer of the TADM of being used for of the present invention.Bidirectional optical wavelength multiplexer/demultiplexer comprises first optical waveguide array 32, this array comprises 32 and comprises first central waveguide, 31, the first star connectors 33, the waveguide grid 34 of arrangement, second star connector 35, and comprise second optical waveguide array 36 of second central waveguide 37.At this moment, first central waveguide 31 is formed on the focal point F 1 on the edge surface between first optical waveguide array 32 and first star connector 33.Here, intersection point F1 is meant the position that the light incide on first star connector 33 from Waveguide array grid 34 on is focused on.Second central waveguide 37 is formed on the focal point F 2 on the edge surface between second star connector 35 and second optical waveguide array 36.Here, focal point F 2 is meant the position of the light focusing that will incide from Waveguide array grid 34 on second star connector 35.
When wavelength from λ J0To λ J7The light by multiplexed different wave length when being imported into first central waveguide 31 and as light λ with different wave length J0To λ J7Light when being imported into other waveguide of first optical waveguide array 32, be multiplexed into λ J0To λ J7Light be output to second central waveguide 37, and wavelength is λ J0To λ J7By multiplexed light by demultiplexing, and the light with single wavelength is output to each waveguide of second optical waveguide array 36.
Fig. 4 illustrates the structural representation according to the TADM of two optical wavelength multiplexer/demultiplexers of use of the present invention.
TADM is added to optional wavelength and is multiplexed into λ I1To λ I16A plurality of wavelength input light or from being multiplexed into a plurality of wavelength X I1To λ I16Input light in deduct optional wavelength and output is multiplexed into wavelength X 01, λ I2. λ I15And λ I16As the result who produces.TADM is included in the first optical wavelength multiplexer/demultiplexer (AWG1) 41 that is used as input interface and output interface, is used as second optical wavelength multiplexer/demultiplexer that increases the ripple interface and subtract the ripple interface and the heat-optical switch 43 that is used to change the path of the light with specific wavelength.
AWG1 41 comprises input interface, and its input is multiplexed into a plurality of wavelength X I1To λ I16Light, output interface, the light that is used for having new wavelength is added to by multiplexed input light, from being subtracted the light that ripple has predetermined wavelength the multiplexed input light, and output is multiplexed into synthetic wavelength λ 01, λ I2. λ I15And λ I16Light, and a plurality of waveguides are used for the light that 43 inputs of thermotropism-optical switch have the light of predetermined wavelength or have specific wavelength from its output.
AWG2 42 comprises and increases the ripple interface, and its input is multiplexed into newly-increased wavelength X 01And λ 016Light, subtract the ripple interface, be used for output and be multiplexed into predetermined wavelength lambda 01And λ I16Light, this light is subtracted ripple from the multiplexed light that is input to input interface, and a plurality of waveguides, the light that is used for having specific wavelength is input to heat-optical switch or has the light of specific wavelength from heat-optical switch output.
Heat-optical switch 43 changes light paths by a plurality of waveguides that are included among AWG1 41 and the AWG2 42, and determines and to increase by input interface that in the wavelength of ripple interface input which sends to output interface and which is sent to subtract the ripple interface.
Bidirectional optical wavelength multiplexer/demultiplexer shown in Fig. 3 is used as AWG41.AWG141 comprises first optical waveguide array, this array comprises first central waveguide and a plurality of waveguide, wherein first central waveguide is imported the multiplexed light of a plurality of wavelength, and the light with a wavelength is only imported in other a plurality of waveguides, and second optical waveguide array, comprise second central waveguide, be used to export the multiplexed light of a plurality of wavelength, and a plurality of other waveguides, be used to export the light that only has specific wavelength.Here, first central waveguide of first optical waveguide array is used as input interface.Second central waveguide of second optical waveguide array is used as output interface.The a plurality of waveguides that only are used for a plurality of waveguides of input of first optical waveguide array and the output that only is used for second optical waveguide array are linked to each other with heat-optical switch 43, and are used to the light of input and output specific wavelength.
Equally, the two-way multiplexer/demultiplexer shown in Fig. 3 is used as SWG2 42.AWG242 comprises the 3rd optical waveguide array, it comprises the 3rd central waveguide, it is imported the multiplexed light of a plurality of wavelength, and a plurality of waveguides, be used for only importing input light and the 4th waveguide array with a wavelength, it comprises the 4th central waveguide, be used to export multiplexed light and a plurality of waveguide of a plurality of wavelength, only be used to export light with a specific wavelength.Here, the 3rd central waveguide of the 3rd optical waveguide array is used as and is increased the ripple interface.The 4th central waveguide of the 4th optical waveguide array is used as subtracts the ripple interface.The a plurality of waveguides that only are used for the input of the 3rd optical waveguide array are linked to each other with heat-optical switch 43 with a plurality of waveguides that only are used for the 4th optical waveguide array, and are used to the input and output of specific wavelength.
Be used to prevent because the output interference that light caused or the optical isolator of return loss preferably also link to each other with first central waveguide of first optical waveguide array, wherein first central waveguide is used as input interface, and the 3rd central waveguide of the 3rd optical waveguide array is used as and increases the ripple interface.
Fig. 5 illustrates the schematic diagram according to the structure of the TADM shown in Fig. 4 of the present invention, thereby its structure can be easy to understand. Label 51,52 and 53 represent respectively to be used as input interface and output interface the first optical wavelength multiplexer demultiplexer, be used as the second optical wavelength multiplexer/demultiplexer (AWG2) that increases the ripple interface and subtract the ripple interface and be used to change the heat-optical switch 43 of the light path of specific wavelength.
Fig. 6 illustrates the schematic diagram according to the structure of the TADM of use optical wavelength multiplexer/demultiplexer of the present invention and heat-optical switch.When comprising a plurality of ripple channels and a plurality of when subtracting the ripple channel that increase, wherein described a plurality of each inputs that increase the ripple channel are added wavelength X 01, λ 02Or λ 016Light, and subtract ripple channel output and have wavelength X described I1, λ I2Or λ I16Light, TADM will fail the λ wavelength and be added to a plurality of wavelength X by increasing the ripple channel I1To λ I16Multiplexed input light in, or output is by subtracting the light that the ripple channel is subtracted ripple, and output has synthetic wavelength λ 01, λ 02λ I3... λ I15And λ 016Light.TADM shown in Fig. 6 comprises the first optical wavelength multiplexer/demultiplexer (AWG) 61 that is used as input interface and is used to change the heat-optical switch 62 of the light path of wavelength.
AWG1 61 comprises input interface, and it is imported a plurality of wavelength X I1To λ I16Multiplexed light; Output interface is used to increase ripple and comprises wavelength X 01, λ 02And λ 016From increasing the light of ripple channel input, subtract ripple and comprise wavelength X I1, λ I2And λ I16Be output to the light that subtracts the ripple channel, and output synthetic wavelength λ 01, λ 02, λ I3λ I15And λ 016Multiplexed light, and a plurality of waveguides are used for the light that 62 inputs of thermotropism-optical switch have the light of specific wavelength and have specific wavelength from 62 outputs of heat-optical switch.
Heat-optical switch 62 is by being included in a plurality of channel-changing light paths among the AWG1 61, and determines and to increase by input interface that in the wavelength of ripple channel input which sends to delivery channel and which is sent to subtract the ripple channel.
Here, the bidirectional optical wavelength multiplexer/demultiplexer shown in Fig. 3 is used as SWG161.Promptly, AWG1 61 comprises first optical waveguide array, this array comprises first central waveguide, and it is imported the multiplexed light of a plurality of wavelength, promptly a plurality of waveguides, only be used to import the light of a wavelength, with second optical waveguide array, comprise second central waveguide, be used to export the multiplexed light of a plurality of wavelength, and a plurality of other waveguides, be used to export the light that only has specific wavelength.Here, first central waveguide of first optical waveguide array is used as input interface.Second central waveguide of second optical waveguide array is used as output interface.The a plurality of waveguides that only are used for a plurality of waveguides of input of first optical waveguide array and the output that only is used for second optical waveguide array are linked to each other with heat-optical switch 62, and are used to the light of input and output specific wavelength.
According to the present invention, when being used as the AWG multiplexer/demultiplexer, can use all interfaces two multiplexer/demultiplexers rather than four and when using additional increasing/use when subtracting channel two rather than a multiplexer/demultiplexer realization TADM.Accordingly, can realize the function the same, and will reduce to minimum, thereby better wavelength characteristic is provided owing to the reduction of the non--consistent wavelength characteristic that is caused of the characteristic of AWG element with traditional TADM by using less elements.

Claims (12)

1. a kind of tunable increasing/subtract multiplexer (TADM) is provided, and it is used for it is characterized in that comprising to being increased any wavelength by multiplexed input light or reducing a plurality of wavelength of the microscler one-tenth of random wave and the output device light of synthetic wavelength to some extent:
First optical wavelength multiplexer/demultiplexer, this demultiplexer comprise an input interface, to this interface import a plurality of wavelength by multiplexed light; An output interface, the light that is used for having new wavelength joins multiplexed input light, has the subtracting in the glistening light of waves of predetermined wavelength, and will be outputed to the wavelength that is synthesized by multiplexed light, and a plurality of waveguides, each waveguide all inputs or outputs the light with specific wavelength;
Second optical wavelength multiplexer/demultiplexer, it comprises and increases the ripple interface, this interface is imported by the multiplexed light that increases wavelength newly, subtract the ripple interface, be used for multiplexed light is outputed to presetted wavelength, the multiplexed light that this wavelength is input to input interface subtracts ripple and forms, and a plurality of waveguides, and each waveguide inputs or outputs the light with predetermined wavelength; And
Optical switch is used for by being included in a plurality of wavelength shift light paths of first and second optical wavelength multiplexers/demultiplexer, and determines input and increase wave-wave being transported to output interface and subtracting the wavelength of ripple interface in long.
2. TADM according to claim 1, it is characterized in that first optical wavelength multiplexer/demultiplexer comprises first optical waveguide array, first star connector that links to each other with first optical waveguide array, the first Waveguide array grid (AWG1) that links to each other with first star connector, second star connector that links to each other with AWG1 is with second optical waveguide array that links to each other with second star connector;
Wherein first optical waveguide array comprises first central waveguide and a plurality of waveguide, and wherein first central waveguide is imported the multiplexed light of a plurality of wavelength, and the light with a wavelength is only imported in other a plurality of waveguides;
And second optical waveguide array, comprise second central waveguide, be used to export the multiplexed light of a plurality of wavelength, and a plurality of other waveguide, be used to export the light that only has specific wavelength;
First central waveguide of first optical waveguide array is used as input interface, second central waveguide of second optical waveguide array is used as output interface, the a plurality of waveguides that only are used for a plurality of waveguides of input of first optical waveguide array and the output that only is used for second optical waveguide array are linked to each other with optical switch, and are used to the light of input and output specific wavelength.
3. TADM according to claim 2, first central waveguide that it is characterized in that first optical waveguide array is formed on making from AWG1 on the edge surface between first optical waveguide array and first star connector and incides the position that the light on first star connector is focused.
4. TADM according to claim 2, second central waveguide that it is characterized in that second optical waveguide array is formed on making from AWG1 on the edge surface between second star connector and second optical waveguide array and incides the position that the light on second star connector focuses on.
5. TADM according to claim 2 is characterized in that being used to prevent because the output interference that light caused or the optical isolator of return loss preferably also link to each other with first central waveguide of first optical waveguide array.
6. TADM according to claim 1, it is characterized in that second optical wavelength multiplexer/demultiplexer comprises the 3rd optical waveguide array, the asterism connector that links to each other with the 3rd optical waveguide array, the second Waveguide array grid (AWG2) that links to each other with the asterism connector, the four stars shape connector that links to each other with AWG2 is with the 4th optical waveguide array that links to each other with four stars shape connector;
Wherein the 3rd optical waveguide array comprises the 3rd central waveguide and a plurality of waveguide, and wherein the 3rd central waveguide is imported the multiplexed light of a plurality of wavelength, and the light with a wavelength is only imported in other a plurality of waveguides;
And the 4th optical waveguide array, comprise the 4th central waveguide, be used to export the multiplexed light of a plurality of wavelength, and a plurality of other waveguide, be used to export the light that only has specific wavelength;
The 3rd central waveguide of the 3rd optical waveguide array is used as increases the ripple interface, the 4th central waveguide of the 4th optical waveguide array is used as subtracts the ripple interface, the a plurality of waveguides that only are used for a plurality of waveguides of input of the 3rd optical waveguide array and the output that only is used for the 4th optical waveguide array are linked to each other with optical switch, and are used to the light of input and output specific wavelength.
7. TADM according to claim 6, the 3rd central waveguide that it is characterized in that the 3rd optical waveguide array is formed on making from AWG2 on the edge surface between the 3rd optical waveguide array and the asterism connector and incides the position that the light on the asterism connector is focused.
8. TADM according to claim 6, the 4th central waveguide that it is characterized in that the 4th optical waveguide array is formed on making from AWG2 on the edge surface between four stars shape connector and the 4th optical waveguide array and incides the position that the light on second star connector focuses on.
9. TADM according to claim 6 is characterized in that being used to prevent because the output interference that light caused or the optical isolator of return loss preferably also link to each other with first central waveguide of the 3rd optical waveguide array.
10. tunable ripple/decaying wave multiplexer that increases, it comprises a plurality of ripple channels that increase, this channel input had the light that increases wavelength, and a plurality of ripple channels that subtract, has the light that reduces wavelength from this channel output, this multiplexer is used for and will be added to by the wavelength that increases ripple channel input by multiplexed light to form a plurality of wavelength or output by subtracting the ripple channel and carry out the light that wavelength reduces and being used for and will being outputed to the wavelength that is synthesized by multiplexed light, also comprises:
An optical wavelength multiplexer/demultiplexer, it comprises an input interface, to this interface import a plurality of wavelength by multiplexed light, an output interface, be used for the light with the wavelength by increasing ripple channel input is increased wavelength, subtract ripple to having the light that outputs to the wavelength that subtracts the ripple channel, and will be outputed to the wavelength that is synthesized by multiplexed light, and a plurality of waveguides, be used to input or output light with specific wavelength; And
Optical switch is used for changing light paths by a plurality of waveguides that are included in optical wavelength multiplexer/demultiplexer, and by input channel with increase and determine the wavelength that will be sent to delivery channel and subtract the ripple channel in the wavelength of ripple channel input.
11. TADM according to claim 10, it is characterized in that optical wavelength multiplexer/demultiplexer comprises first optical waveguide array, first star connector that links to each other with first optical waveguide array, the Waveguide array grid (AWG) that links to each other with first star connector, second star connector that links to each other with AWG is with second optical waveguide array that links to each other with second star connector;
Wherein first optical waveguide array comprises first central waveguide and a plurality of waveguide, and wherein first central waveguide is imported the multiplexed light of a plurality of wavelength, and the light with a wavelength is only imported in other a plurality of waveguides;
And second optical waveguide array, comprise second central waveguide, be used to export the multiplexed light of a plurality of wavelength, and a plurality of other waveguide, be used to export the light that only has specific wavelength;
First central waveguide of first optical waveguide array is used as input interface, second central waveguide of second optical waveguide array is used as output interface, the a plurality of waveguides that only are used for a plurality of waveguides of input of first optical waveguide array and the output that only is used for second optical waveguide array are linked to each other with optical switch, and are used to the light of input and output specific wavelength.
12. TADM according to claim 11 is characterized in that being used to prevent because the output interference that light caused or the optical isolator of return loss preferably also link to each other with first central waveguide.
CN99119420A 1998-09-24 1999-09-22 Tunable increasing wave/decaying wave multiplexer Pending CN1250283A (en)

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KR9839729 1998-09-24
KR1019980039729A KR100274809B1 (en) 1998-09-24 1998-09-24 Tunable add/drop multiplexer using bidirectional optical wavelength multiplxer

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KR100330411B1 (en) * 2000-02-07 2002-03-27 윤덕용 Wavelength interleaved bidirectional add/drop amplifier module with an arrayed-waveguide grating multiplexer
KR100323058B1 (en) * 2000-04-29 2002-02-09 김춘호 Optical add and drop multiplexer
KR100407340B1 (en) * 2002-02-19 2003-11-28 삼성전자주식회사 Optical communication apparatus using arrayed waveguides grating

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