Optical component assembly, optical receptacle, and transceiver module for optical communications

Patent metadata

Field	Value
Publication number	US-9810863-B2
Application number	US-201414758793-A
Country	US
Kind code	B2
Filing date	Jul 17, 2014
Priority date	Jul 26, 2013
Publication date	Nov 7, 2017
Grant date	Nov 7, 2017

Abstract

An optical component assembly includes a light-guiding member; a cylindrical member which retains the light-guiding member in a through hole thereof; and a projection which is provided at one end of the cylindrical member so as to extend beyond an outer periphery of the cylindrical member, and is engageable in a groove which is formed in a cylindrical shell so as to extend in an axial direction of the cylindrical shell and then turn at a distal end thereof in a circumferential direction of the cylindrical shell. By fixing the cylindrical shell to the projection, the cylindrical shell becomes attachable and detachable. It is possible to provide an optical receptacle and a transceiver module for optical communications having easy removal of foreign matters.

First claim

The invention claimed is:

1. An optical receptacle, comprising:
an optical component assembly including:
a light-guiding member;
a cylindrical member which retains the light-guiding member in a through hole thereof; and
a projection which is provided at one end of the cylindrical member so as to extend beyond an outer periphery of the cylindrical member, and is engageable in a groove which is formed in a cylindrical shell so as to extend in an axial direction of the cylindrical shell and then turn in a circumferential direction of the cylindrical shell;
a sleeve disposed at a front end part of the light-guiding member; and
a cylindrical shell which covers an outer periphery of the sleeve, and has a groove which is formed at a rear end part of the cylindrical shell so as to extend in the axial direction of the cylindrical shell and then turn in the circumferential direction of the cylindrical shell, wherein
a protrusion is disposed on one end face of the cylindrical member,
the protrusion protrudes in an axial direction of the cylindrical member from the one end face,
the projection is placed at a side face of the protrusion,
the cylindrical shell is fixable by engagement of the groove with the projection, and
a rear end face of the sleeve abuts on a front end face of the protrusion, and a gap is present between the rear end face of the sleeve and one end face of the cylindrical member.

2. The optical receptacle according to claim 1 , wherein the projection is placed in two or more locations which are symmetrical with respect to a center axis of the cylindrical member.

3. The optical receptacle according to claim 1 , wherein at least part of a rear end face of the light-guiding member is an inclined face, and an inclination direction of the inclined face has a predetermined positional relationship with a protruding direction of the projection.

4. The optical receptacle according to claim 1 , wherein an optical isolator is located on an optical path of the light-guiding member.

5. The optical receptacle according to claim 4 , wherein a predetermined positional relationship is employed between the protruding direction of the projection and a direction of polarization plane of light transmitted through the optical isolator or a direction of polarization plane of light blocked by the optical isolator.

6. The optical receptacle according to claim 1 , wherein the light-guiding member is a fiber stub in which an optical fiber is inserted into a ferrule.

7. The optical receptacle according to claim 1 , wherein a gap is present between the outer periphery of the cylindrical member and an inner periphery of the cylindrical shell.

8. The optical receptacle according to claim 1 , wherein a part of the groove which is turned in the circumferential direction of the cylindrical shell is an inclined groove which is away from a rear end face of the cylindrical shell with distance from a connection of the groove connected to a part of the groove which extends in the axial direction of the cylindrical shell to a distal end of the groove.

9. The optical receptacle according to claim 1 , wherein the cylindrical shell is provided with a marking for identification.

10. The optical receptacle according to claim 9 , wherein the marking is represented by a color different from a color of an appearance of the cylindrical shell.

11. The optical receptacle according to claim 9 , wherein the marking is represented by a mark engraved in the cylindrical shell.

12. The optical receptacle according to claim 9 , wherein the marking is represented by a color painted onto the cylindrical shell.

13. A transceiver module for optical communications, comprising:
the optical receptacle according to claim 1 ; and
an optical communications package secured to the cylindrical member, in the optical communications package being stored an optical device.

Assignees

• Kyocera Corp

Inventors

• Akashi Tomoyoshi
• Tanaka Tsuyoshi
• Takebe Keisuke

Classifications

• G02B6/4208 Primary

  using non-reciprocal elements or birefringent plates, i.e. quasi-isolators (optical isolators per se G02F1/093, G02F1/0955) · CPC title

• G02B6/3846

  with fibre stubs · CPC title

• G02B6/3894

  Screw-lock type · CPC title

• G02B6/4246

  Bidirectionally operating package structures · CPC title

• G02B6/4207

  with optical elements reducing the sensitivity to optical feedback (anti-reflection devices specially adapted for lasers, see H01S3/0064) · CPC title