JPS639611B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the assembly of photoelectric conversion elements and fibers arranged in an array.

Light transmission is the key to efficiently inputting light emitted from a light emitting device such as an LED into an optical fiber, efficiently connecting optical fibers, or efficiently inputting light from an optical fiber to a light receiving device. This is an important issue in order not to reduce efficiency, and for this reason, the alignment of the light emitting device and the optical fiber, and the alignment of the light receiving device and the optical fiber must be performed with high precision.

By forming a V-groove in a Si wafer using photolithography technology and mounting an optical fiber in the V-groove, it is possible to align the optical fiber and the arrayed light emitting device or light receiving device with high precision. can.

Techniques for fixing fibers have so far been to directly fix them with resin, or to fix the fibers with metallized surroundings using Au-based alloys or solder.

However, when pouring resin and fixing the optical fiber, it takes a considerable amount of time for the resin to harden, and during that time, the element and the fiber may become misaligned, causing the optical fiber to float to varying degrees. There was a drawback. To prevent this, it was necessary to hold down the optical fiber in some way. Therefore, in the case of an array element, adjustment must be made for each element, which is impractical.

The present invention solves the above-mentioned drawbacks, and when an array of light emitting or light receiving elements and optical fibers are combined and fixed, each optical fiber is first temporarily fixed on a fiber fixing base with a quick-drying adhesive, and then The present invention provides a method for assembling arrayed photoelectric conversion elements and optical fibers, which is characterized in that the arrayed photoelectric conversion elements and optical fibers are assembled by completely fixing them with resin or the like.

That is, the optical fiber is temporarily fixed in a normal position in the groove of the fiber fixing table using a quick-drying adhesive. After that, the optical fiber is fixed with resin or the like.

Examples of the present invention will be described in detail below.

The figure shows an example of mounting an optical fiber in a V-groove of a fiber fixing table and temporarily fixing the optical fiber with a quick-drying adhesive when bonding an array of optical semiconductor elements and an optical fiber. be.

Although the case of an edge-emitting type light emitting element will be described here, it is clear that the present invention is not limited to this embodiment in particular according to the gist of the present invention.

V-grooves are cut into the Si substrate using photolithography technology to match the pitch of the light-emitting element array, and fibers are lined up in the grooves. The light emitting element array and the fibers are faced to each other, and the fibers are slid along the V-groove for each element to find the optimal position and temporarily fixed with an instant adhesive (Aron Alloa, Cemedine 3000, etc.).

In the figure, 1 is a light emitting element array, 2 is an active layer, 3 is a light emitting part, 4 is a lower electrode, and 5 is a striped upper electrode. 6 is a fiber fixing base in which a V-groove is formed on a Si substrate by photolithography, and 7 is an optical fiber. Reference numeral 8 denotes a fixing portion in which the optical fiber 7 is temporarily fixed to the fiber fixing base 6 with an instant adhesive. After temporarily fixing all the fibers,
Apply resin to the entire surface for complete fixation.

As is clear from the above explanation, before applying the resin fixing to completely fix the fibers, the fibers are aligned with each element and fixed with instant adhesive to prevent them from shifting during the resin fixing, and then the fibers are completely fixed with the resin. Do this.

The method of the present invention eliminates the need to provide support to prevent the fibers from shifting during resin fixation, which takes a long time, and compared to the method of fixing each fiber one by one with resin, it is unnecessary to provide support after temporarily fixing the fibers. All the resin can be fixed in one go, which greatly reduces time and maintains high positioning accuracy.

This method is particularly effective for fixing array elements, but it is also effective for single elements since there is no need for special support until the resin is fixed.

In this embodiment, a connection between a semiconductor light emitting device and an optical fiber has been described, but the present invention can be similarly used for a connection between a fiber and a semiconductor light receiving device.

[Brief explanation of the drawing]

The drawing is a perspective view illustrating the assembly of the light emitting element array and fiber according to the present invention. 1: Light emitting element array, 3: Light emitting section, 6: Fiber fixing base, 7: Optical fiber.

Claims (1)

[Scope of Claims] 1. A semiconductor light-emitting device in which semiconductor light-emitting elements are formed in an array, or a semiconductor light-receiving device in which semiconductor light-receiving elements are formed in an array. photoelectric conversion elements) and the fiber fixing base in which V grooves are formed in the Si wafer using photolithography technology to match the pitch of the array of the arrayed photoelectric conversion elements.
In a method for coupling and fixing an arrayed photoelectric conversion element and an optical fiber, the optical fiber is aligned with the optical fiber and the arrayed light emitting device or light receiving device by mounting the optical fiber in the groove. The arrayed photoelectric conversion element of the semiconductor photodetector and the optical fibers arranged in the V-groove of the fiber fixing table are placed facing each other, and the optical fibers are quickly dried on the fiber fixing table with the optimum position of the optical fibers exposed for each element. A method for assembling an arrayed photoelectric conversion element and optical fiber, characterized by temporarily fixing them with an adhesive and then completely fixing them with a resin or the like.