Semiconductor laser V shaped groove fixed optical fiber coaxial device

A fiber coaxial and laser technology, which is applied to semiconductor lasers, laser parts, lasers, etc., can solve the problems of reducing the cost of semiconductor laser coaxial devices and affecting the wide application, and achieve the effect of reducing production costs and improving production efficiency.

Inactive Publication Date: 2004-03-03
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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Problems solved by technology

In this process, since the geometric dimensions of the light-receiving surface and the light-emitting surface of the optical fiber and semiconductor laser are on the order of microns, it takes a lot of labor and time to perform coupling adjustment work to precisely align the two, and it is difficult for the coupling work to be performed. Technicians put forward higher technical level requirements
This makes it difficult to further reduce the cost of semiconductor laser coaxial devices, affecting its further wide application

Method used

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  • Semiconductor laser V shaped groove fixed optical fiber coaxial device
  • Semiconductor laser V shaped groove fixed optical fiber coaxial device
  • Semiconductor laser V shaped groove fixed optical fiber coaxial device

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Embodiment Construction

[0015] see figure 1 and figure 2 ,exist figure 1 and figure 2 In the embodiment, the high mesa 1 of the heat sink, the low mesa 2 of the heat sink and the V-shaped groove 3 are respectively made on the silicon heat sink 9 by combining dry etching and wet etching micromachining techniques. Then use microelectronic technology to make planar electrodes 4 and alignment marks 5 on the lower mesa 2 of the heat sink, and make a back gold layer on the back of the silicon heat sink 9 . In this process, it is easy to ensure strict alignment with the centerlines of the V-shaped groove 3 and the alignment mark 5 by utilizing the precision of the micromachining technology and the microelectronics process. The waveguide and cleavage plane of the semiconductor laser 7 are aligned with the corresponding marks of the alignment mark 5 and welded on the plane electrode 4 . The head of the optical fiber 6 is shaped into a conical shape by grinding or high-temperature drawing, which can incr...

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Abstract

A coaxial device with semiconductor laser and optical fibre fixed in V-shaped slot is composed of a circular case, a substrate fixed to one end of circular case, an internal supporter, a thermal silicon sink on which there are semiconductor laser and optical fibre, a back light detector, pins, and interconnection wires. Its advantages are high packing productivity and low cost.

Description

technical field [0001] The invention belongs to the technical field of optical fiber communication, and more specifically relates to a semiconductor laser V-shaped groove fixing an optical fiber coaxial device. Background technique [0002] In optical fiber communication technology, semiconductor lasers are widely used as signal sources. Since it is necessary to couple the laser emitted by the semiconductor laser into the optical fiber before it can be used in the optical fiber communication system, there are many different types of coupling packaging devices, such as coaxial packaging, dual in-line packaging and butterfly packaging. Because of its low cost, the devices in the coaxial package are widely used in access networks, metropolitan area networks, rack switching, and cable television. Usually semiconductor laser coaxial devices, optical fibers and lasers must be manually coupled and aligned. The specific process is usually to align the optical fiber with the light-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/42H01S5/00
Inventor 陈振宇祝宁华
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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