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Optical receptacle and optical transceiver

An optical socket and optical fiber technology, which is applied in the field of optical sockets for high-speed communication modules, can solve the problems of difficult refractive index management, difficult manufacturing management, and increased optical loss.

Active Publication Date: 2017-08-01
阿卡西亚通信公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, since the method of the prior document 1 uses a GI fiber whose mode field diameter changes periodically, there is a problem that the length of the GI fiber must be strictly controlled in order to obtain an optimum mode field diameter. , so that the management of manufacturing is more difficult
[0010] In addition, there is a problem that when thermally bonding an optical fiber whose refractive index varies stepwise from the center of the core to the outer periphery with respect to the radial direction, such as GI optical fiber, the end surface of the optical fiber is melted. On the other hand, in the integrated thermal bonding technology, the core wires with different refractive indices are dissolved and mixed, so it is difficult to manage the refractive index around the thermally bonded part, resulting in increased light loss.

Method used

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  • Optical receptacle and optical transceiver
  • Optical receptacle and optical transceiver
  • Optical receptacle and optical transceiver

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0078] figure 1 It is a schematic sectional view showing the optical receptacle according to the first embodiment of the present invention.

[0079] The optical receptacle 1 is composed of the following: a short optical fiber ferrule 4 including an optical fiber 2, a sleeve 3 having a through hole 3c for holding the optical fiber 2, and an elastic member 9; Hold; the sleeve 6 uses one end to hold the top end of the short fiber ferrule 4, and uses the other end to hold the plug sleeve inserted into the optical socket 1, and uses the elastic member 9 to bond and fix the optical fiber 2 to the passage of the sleeve 3 hole 3c. In addition, the plug ferrule inserted into the optical receptacle 1 is not shown in figure.

[0080] Materials suitable for the ferrule 3 include ceramics, glass, etc., but in this embodiment, zirconia ceramics are used, and the optical fiber 2 is bonded and fixed in its center, and one end (end surface 3b) to be optically connected to the plug ferrule is...

no. 2 approach

[0109] Figure 8 It is a schematic cross-sectional view showing an optical receptacle according to a second embodiment of the present invention.

[0110] The components constituting the optical receptacle 1 are the same as those of the first embodiment, and the end surface 3b of the ferrule 3 that is ground into a convex spherical surface (refer to Figure 8 ) end face 3a on the opposite side (refer to Figure 8), the sleeve 3 has an optical fiber 2 and a through-hole 3c for holding the optical fiber 2, and a part of the end face 2a of the optical fiber 2 and the end face 3b of the sleeve 3 is ground to form from the center axis C1 perpendicular to the sleeve 3 A plane with a predetermined angle (for example, 4 degrees to 10 degrees) from the plane.

[0111] This prevents the light emitted from the light-emitting element connected to the optical receptacle 1 and entering the optical fiber 2 from returning to the light-emitting element by the light reflected by the end surfac...

no. 3 approach

[0151] Figure 13 It is a schematic cross-sectional view illustrating a part of the optical receptacle according to the third embodiment of the present invention.

[0152] Figure 13 The part of the optical fiber stub 4 in the optical receptacle according to this embodiment is enlarged and shown. Such as Figure 13 As shown, the first part (first part 21 ) has a part (inner part 21 a ) arranged inside the through hole 3 c of the sleeve 3 and a part (protruding part 21 b ) arranged outside the through hole 3 c. In addition, the optical receptacle according to this embodiment has an elastic member 19 . Except for the above, this embodiment is the same as the first or second embodiment.

[0153] The protruding portion 21b protrudes outward from the sleeve 3 (the surface of the sleeve 3 opposite to the end surface 3b). That is, the protruding portion 21b is not juxtaposed with the sleeve 3 in the direction perpendicular to the central axis C1. The inner portion 21a is juxtap...

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Abstract

Provided is an optical receptacle equipped with: a fiber stub including an optical fiber having a core and a cladding, a ferrule having a through-hole, and an elastic member for affixing the optical fiber to the ferrule; and a retainer for retaining the fiber stub. The optical fiber has a first section in which the core diameter is small and the refractive index differential of the core and the cladding is large, a third section in which the core diameter is large and the refractive index differential of the core and the cladding is small, and a second section in which the core diameter transitions from the diameter in the first section to the diameter in the second section, and the refractive index differential of the core and the cladding transitions between one equal to or less than the refractive index differential of the first section and one equal to or greater than the refractive index differential of the third section. The elastic member is packed into a space between the optical fiber and the inner wall of the through-hole.

Description

technical field [0001] The aspect of the present invention generally relates to an optical transceiver and a module for optical communication, and particularly relates to an optical receptacle suitable for a module for high-speed communication. Background technique [0002] An optical receptacle is used as a part for optically connecting an optical fiber connector to an optical element such as a light receiving element or a light emitting element in an optical module of an optical communication transceiver. [0003] In recent years, along with the increase of IP communication, the speed-up of the transceiver for optical communication is requested|required. Generally, the shape of a transceiver using a socket-type optical module has been standardized. Therefore, when the modulation speed of the optical signal emitted from the semiconductor laser, one of the optical elements, is increased, the space required for the circuit becomes larger. Miniaturization of optical modules i...

Claims

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Application Information

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IPC IPC(8): G02B6/42G02B6/02G02B6/38
CPCG02B6/3846G02B6/421G02B6/02004G02B6/02033G02B6/38G02B6/42
Inventor 近藤祥我妻弘嗣箱崎悟史兼行哲史冨永康平佐藤裕希
Owner 阿卡西亚通信公司