JP2001083343A - Glass waveguide module and method of manufacturing the same - Google Patents

Abstract

(57) Abstract: A glass waveguide module having a short rise time and low power consumption and a method for manufacturing the same are provided. SOLUTION: An array-type glass waveguide 1 to which a heater 13 is attached is filled with a gel-like resin 21 as a heat insulating material in a package 14 of a glass waveguide module 20 built in the package 14, thereby forming a gel-like resin. 21
Is sufficiently filled in the package 14 without gaps,
The heat of the heater 13 is conducted to the array type glass waveguide 1 in a short time. As a result, a glass waveguide module 20 having a short rise time and low power consumption can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a glass waveguide module and a method for manufacturing the same.

[0002]

2. Description of the Related Art With the improvement of optical communication technology, wavelength multiplex communication has been performed. An array type glass waveguide is used for the wavelength multiplex communication.

FIG. 2 is a plan view of an array type glass waveguide.

The array-type glass waveguide 1 comprises an input waveguide 3 on a substrate 2, an input slab waveguide 4 connected to the input waveguide 3, and a plurality of input slab waveguides 4 connected to the input slab waveguide 4. Array optical circuit 6 composed of the channel waveguides 5, an output slab waveguide 7 connected to the array optical circuit 6, and a plurality of output waveguides 8 connected to the output slab waveguide 7.
The optical fiber is connected to both ends.

[0005] The array type glass waveguide 1 has a wavelength difference of 0.8.
It has a function of separating an optical signal of μm (8 to 40 wavelengths) and is housed in a package and used as a glass waveguide module. In this glass waveguide module, it is necessary to keep the glass waveguide at a constant temperature in order to set the optical path length of the optical circuit formed on the glass substrate.

FIG. 3 is a sectional view of a conventional glass waveguide module.

In this glass waveguide module 10, an array type glass waveguide 1 is mounted on a waveguide stage 11, and a temperature sensor 1 is provided on the surface of the array type glass waveguide 1.
2 and a heater 13 on the back surface of the waveguide stage 11.
The optical fiber 16 for the incident light and the optical fiber 17 for the output light are attached to both ends of the array-type glass waveguide 1, and the heat of the heater 13 is reduced. In order to effectively provide the array-type glass waveguide 1, a foam insulating material 18 is inserted into a gap between the package 14 and the array-type glass waveguide 1, and is sealed with an upper lid 19. Reference numeral 9 denotes a fiber block for connecting the array type glass waveguide 1 and the optical fibers 16 and 17.

Since the structure inside the package 14 is complicated, the foamed heat insulating material 18 is cut out to an appropriate size and filled in the gap in the package 14.

[0009] The foam insulation 18 is an array type glass waveguide 1
Since it cannot be adhered on top, heat diffusion occurs and power consumption increases to achieve the set temperature of the glass waveguide module 10 of 70 to 80 ° C., and it takes about 10 minutes.

Here, the temperature of the glass waveguide module 10 is set to 70 to 80 ° C. because the external temperature is set to a maximum of 6 ° C.
This is because the temperature is assumed to be 0 ° C., the external temperature dependency is reduced, and a stable multiplexing / demultiplexing characteristic is provided. In addition, when the time required for the glass waveguide module 10 to reach the set temperature is advanced, when the supply of power is stopped due to a power failure or the like and the temperature inside the glass waveguide module 10 decreases, the time for immediately returning to the set temperature is advanced, This is an important factor because it minimizes the restart of the system.

[0011]

However, in the above-mentioned conventional glass waveguide module, the power consumption required to reach the operating temperature of the multiplexing / demultiplexing array type glass waveguide module is large, and it takes a long time. There was a problem.

It is an object of the present invention to solve the above-mentioned problems and to provide a glass waveguide module having a short rise time and low power consumption, and a method of manufacturing the same.

[0013]

To achieve the above object, a glass waveguide module according to the present invention is a glass waveguide module in which a glass waveguide to which a heater is attached is built in a package. Is filled with a gel resin.

In addition to the above configuration, the thermal conductivity of the gel resin of the glass waveguide module of the present invention is preferably 0.1 W / m · K or less.

According to a method of manufacturing a glass waveguide module of the present invention, there is provided a method of manufacturing a glass waveguide module in which a heater is attached to a glass waveguide and which is incorporated in a package, wherein the package is filled with a gel resin as a heat insulating material. It is.

In the method of manufacturing the glass waveguide module, it is preferable to use a gel resin having a thermal conductivity of 0.1 W / m · K or less.

According to the present invention, the gel resin is filled as a heat insulating material in the package of the glass waveguide module, so that the gel resin is sufficiently filled in the package without any gap. Conducts into the glass waveguide in time. As a result, a glass waveguide module having a short rise time and low power consumption can be obtained.

[0018]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a sectional view showing an embodiment of a glass waveguide module to which the method for manufacturing a glass waveguide module according to the present invention is applied. The same members as those in the conventional example shown in FIG.

In this glass waveguide module 20, an array type glass waveguide 1 is mounted on a waveguide stage 11, and a temperature sensor 1 is provided on the surface of the array type glass waveguide 1.
2 and a heater 13 on the back surface of the waveguide stage 11.
The optical fiber 16 for the incident light and the optical fiber 17 for the output light are attached to both ends of the array-type glass waveguide 1, and the heat of the heater 13 is reduced. The package 14 is filled with a gel-like resin (eg, a gel-like silicone resin) 21 as a heat insulating material in order to provide the array-type glass waveguide 1 effectively.

The gel resin 21 is injected by a dispenser in a predetermined amount before the upper cover 19 of the package 14 is screwed (or bonded and fixed). Therefore, the heat insulating material can be more easily stored in the package 14 than before. The thermal conductivity of the gel resin 21 is 0.1 W / m
When the temperature is higher than K, the effect as a heat insulating material cannot be obtained, so that the thermal conductivity is preferably set to 0.1 W / m · K or lower.

Here, the conventional glass waveguide module 1
0 indicates that when the heat value of the heater 13 is 6 W, the temperature sensor 1
It took 12 minutes for the temperature display of 2 to reach 75 ° C,
Since the glass waveguide module 20 of the present invention uses a silicone-based gel resin 21 as a heat insulating material, it has a 6 W
If the heater is used, the temperature sensor display will be 75 ° C in 7 minutes
Reached. Also, assuming that the time to reach the set temperature is within 10 minutes, the power of the heater 13 reached the set temperature at 4 W.

That is, the glass waveguide module 20 of the present invention can reach the set temperature with low power consumption and in a short time because the gel resin 21 is filled in the package 14.

In this embodiment, a case has been described in which a silicone gel resin is used as a heat insulating material. However, a material obtained by mixing an inert substance such as SiO ₂ particles with a gel resin may be used.

[0025]

In summary, according to the present invention, the following excellent effects are exhibited.

A glass waveguide module having a short rise time and low power consumption and a method of manufacturing the same can be provided.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating an embodiment of a glass waveguide module to which a method for manufacturing a glass waveguide module according to the present invention is applied.

FIG. 2 is a plan view of an optical circuit of an array type glass waveguide.

FIG. 3 is a sectional view of a conventional glass waveguide module.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Array-type glass waveguide 13 Heater 14 Package 20 Glass waveguide module 21 Gel-like resin

Claims (4)

[Claims] 1. A glass waveguide module in which a glass waveguide to which a heater is attached is built in a package, wherein the package is filled with a gel resin as a heat insulating material. . 2. The thermal conductivity of the gel resin is 0.1 W /
The glass waveguide module according to claim 1, wherein the glass waveguide module has a value of mK or less. 3. A method of manufacturing a glass waveguide module in which a heater is attached to a glass waveguide and is built in a package, wherein the package is filled with a gel resin as a heat insulating material. Production method. 4. The gel resin has a thermal conductivity of 0.1 W /
4. The method of manufacturing a glass waveguide module according to claim 3, wherein the glass waveguide module has a value of mK or less.