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JPS5517149A - Light signal branching circuit with monitor - Google Patents

Light signal branching circuit with monitor

Info

Publication number
JPS5517149A
JPS5517149A JP8990078A JP8990078A JPS5517149A JP S5517149 A JPS5517149 A JP S5517149A JP 8990078 A JP8990078 A JP 8990078A JP 8990078 A JP8990078 A JP 8990078A JP S5517149 A JPS5517149 A JP S5517149A
Authority
JP
Japan
Prior art keywords
branching circuit
photo
mode distribution
light signal
optical fibers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8990078A
Other languages
Japanese (ja)
Other versions
JPS5641191B2 (en
Inventor
Ikutaro Kobayashi
Kenji Okada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP8990078A priority Critical patent/JPS5517149A/en
Publication of JPS5517149A publication Critical patent/JPS5517149A/en
Publication of JPS5641191B2 publication Critical patent/JPS5641191B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Testing Of Optical Devices Or Fibers (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE: To stabilize the mode distribution of light incident to the photo branching circuit and stabilize the quantity of branching by providing a mode distribution shaper for removing of undesired modes or shaping of mode distribution to the optical fibers connecting a light source and the photo branching circuit.
CONSTITUTION: In the light signal branching circuit which connects a light source 301 and a photo branching circuit 303 having a monitoring terminal by means of optical fibers and outputs light signal to two or more output terminals of the photo branching circuit 303, a mode distribution shaper 302 intended for removing undesired modes or shaping mode distribution is provided between the optical fibers 304, 305 connecting the light source 301 and photo branching circuit 303, whereby the mode distribution of the light entering the photo branching circuit 303 may be stabilized, hence the quantity of branching of the photo branching circuit 303 may be stabilized.
COPYRIGHT: (C)1980,JPO&Japio
JP8990078A 1978-07-25 1978-07-25 Light signal branching circuit with monitor Granted JPS5517149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8990078A JPS5517149A (en) 1978-07-25 1978-07-25 Light signal branching circuit with monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8990078A JPS5517149A (en) 1978-07-25 1978-07-25 Light signal branching circuit with monitor

Publications (2)

Publication Number Publication Date
JPS5517149A true JPS5517149A (en) 1980-02-06
JPS5641191B2 JPS5641191B2 (en) 1981-09-26

Family

ID=13983601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8990078A Granted JPS5517149A (en) 1978-07-25 1978-07-25 Light signal branching circuit with monitor

Country Status (1)

Country Link
JP (1) JPS5517149A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5966226U (en) * 1982-10-26 1984-05-02 株式会社島津製作所 optical splitter
JPS616609A (en) * 1984-06-20 1986-01-13 Sumitomo Electric Ind Ltd How to enter light into optical fiber
JPS62153805A (en) * 1985-12-27 1987-07-08 Hitachi Ltd Signal distribution method
JPS63121936U (en) * 1987-01-30 1988-08-08

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5966226U (en) * 1982-10-26 1984-05-02 株式会社島津製作所 optical splitter
JPS616609A (en) * 1984-06-20 1986-01-13 Sumitomo Electric Ind Ltd How to enter light into optical fiber
JPS62153805A (en) * 1985-12-27 1987-07-08 Hitachi Ltd Signal distribution method
JPS63121936U (en) * 1987-01-30 1988-08-08

Also Published As

Publication number Publication date
JPS5641191B2 (en) 1981-09-26

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Doyle et al. Design and Operation of a Stable Attenuation Measurement System.