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Semiconductor laser module and optical module

A technology of laser modules and semiconductors, which is applied in the direction of semiconductor lasers, semiconductor devices, lasers, etc., and can solve problems such as large movement fluctuations and coupling efficiency fluctuations

Active Publication Date: 2013-11-20
FURUKAWA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, even with the method of shifting in advance by the amount corresponding to the position shift as described above, there is a problem that the coupling efficiency fluctuates due to large fluctuations in the amount of movement due to differences between products.

Method used

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  • Semiconductor laser module and optical module
  • Semiconductor laser module and optical module
  • Semiconductor laser module and optical module

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no. 1 approach

[0036] Hereinafter, a first embodiment according to the present invention will be described with reference to the drawings. figure 1 It is a schematic sectional view of a semiconductor laser module. In addition, the same code|symbol is attached|subjected to the same member as the article shown in the conventional structure, and it demonstrates.

[0037] Also, in the following description, the X direction refers to figure 1 The depth direction of the paper surface, the Y direction refers to figure 1 The up and down direction on the paper, the Z direction refers to figure 1 The left and right direction of the paper.

[0038] The semiconductor laser module 101 has a package 4 constituting its exterior, and the semiconductor laser element 2 and the optical fiber 3 are housed in the package 4 .

[0039]A temperature control module 5 is mounted on the bottom surface of the package 4 , and a metal base 6 is mounted on the temperature control module 5 so as to be in contact wi...

no. 2 approach

[0077] Hereinafter, a second embodiment according to the present invention will be described with reference to the drawings.

[0078] Figure 5 It is a schematic sectional view of the semiconductor laser module of 2nd Embodiment. and, Image 6 is along Figure 5 The cross-sectional view taken along the line IV-IV in FIG. 2 is a diagram schematically showing the arrangement and fixing portion of the ferrule.

[0079] In addition, in the following description, the X direction means Figure 5 The depth direction of the paper surface, the Y direction refers to Figure 5 The up and down direction on the paper, the Z direction refers to Figure 5 The left and right direction of the paper.

[0080] In this second embodiment, the mounting of the semiconductor laser element 2 of the first embodiment is rotated by 90 degrees, and the soldering portion of the ferrule 11 is rotated by 90 degrees (the same structure as in the past). In terms of structure, the LD stage 207 is differe...

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Abstract

The present invention provides a semiconductor laser module in which a coupling efficiency does not easily vary even though a displacement amount varies by the effect of welding. The semiconductor laser module comprises: a semiconductor laser element 2 for emitting a laser light whose cross-sectional shape at an emission end face is elliptical; an optical fiber 3 arranged to receive the laser light from the semiconductor laser element 2; a package 4 for housing the semiconductor laser element 2 and the optical fiber 3; a first fastening means 117 for fastening the optical fiber 3 to the package 4; and a second fastening means 7 for fastening the semiconductor laser element 2 to the package 4, wherein the semiconductor laser element 2 and the optical fiber 3 are fastened such that a minor axis of the elliptical shape of the laser light becomes parallel to a line connecting both ends of the optical fiber 3, said both ends being restricted by the first fastening means 117.

Description

technical field [0001] The present invention relates to a semiconductor laser module used in optical communication, in particular, to a semiconductor laser module and an optical module for connecting optical cables or optical cords. Background technique [0002] In recent years, semiconductor lasers (laser diodes) have been widely used as signal light sources and excitation light sources for optical fiber amplifiers in optical communications. When a semiconductor laser is used as a signal light source or an excitation light source in optical communication, it is often used as a semiconductor laser module that optically couples laser light from the semiconductor laser to an optical fiber. [0003] Figure 7 A configuration example of a semiconductor laser module is shown in a schematic cross-sectional view. This semiconductor laser module 1 is formed by forming a semiconductor laser element 2 and an optical fiber 3 in an optically coupled state, and housing and arranging the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/022
CPCH01S5/02438H01S5/02284G02B6/30H01S5/02276H01S5/02415G02B6/4237H01S5/02208G02B6/423G02B6/262H01L2224/48091H01S5/02251H01S5/02345H01L2924/00014
Inventor 谷口英广三代川纯
Owner FURUKAWA ELECTRIC CO LTD