Optical transceiver with optical subassemblies optionally fixed to housing

• US 20060215970A1
• Filed: 03/14/2006
• Published: 09/28/2006
• Est. Priority Date: 03/15/2005
• Status: Active Grant

• Current Assignee: Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Original Assignee: Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Inventors: Ishikawa, Manabu, Mizue, Toshio
• Granted Patent: US 7,367,720 B2
• Time in Patent Office: Days
• US Class Current: 385/92
• CPC Class Codes: G02B 6/3878 comprising a plurality of ferrules, branching and break-out means
• CPC Class Codes: G02B 6/4201 Packages, e.g. shape, construction, internal or external details
• CPC Class Codes: G02B 6/4245 Mounting of the opto-electronic elements
• CPC Class Codes: G02B 6/4246 Bidirectionally operating package structures
• CPC Class Codes: G02B 6/4256 Details of housings
• CPC Class Codes: G02B 6/4271 with thermo electric cooling

Abstract

The present invention provides an optical transceiver with an optical subassembly optically coupling with an optical connector via a receptacle member, in which the optical subassembly is positioned to the housing of the transceiver without causing any mechanical stress. The optical subassembly is fixed to the receptacle member by inserting a sleeve thereof into an opening of the receptacle member. The receptacle member is assembled with the housing via the holder by adjusting the positional relation between the holder and the housing. Therefore, even when the subassembly is fixed to the receptacle member via the sleeve thereof, the subassembly can fit to the housing without causing any mechanical stress because the holder is interposed therebetween, which secures the heat dissipating path from the optical subassembly to the housing.

Claims

1. An optical transceiver, comprising:

a receptacle member having a cavity and an opening exposed to the cavity, the cavity receiving an optical connector;

an optical subassembly having a sleeve and a package for installing a semiconductor optical device, the optical subassembly optically coupling with an optical fiber attached to the optical connector by inserting the sleeve into the opening of the receptacle member and mating with the optical connector in the cavity;

a holder for holding the receptacle member; and

a housing for installing the receptacle body, the optical subassembly and the holder therein, the housing assembling the holder in a position,

wherein the position of the holder to the housing is adjustable such that the package of the optical subassembly fits to the housing.

2. The optical transceiver according to claim 1,

wherein the housing provides a pair of side walls each providing a groove, and the holder has a pair of arms and a bridge connecting arms to form a U-shape, each arm in a tip thereof providing an outer rib movable within the groove of the housing.

3. The optical transceiver according to claim 2,

wherein the bridge provides a pair of openings, and the receptacle member provides a pair of openings each corresponding to openings of the bridge, and

wherein the optical subassembly includes a transmitting optical subassembly and a receiving optical subassembly each having the sleeve and the package, each sleeve being inserted in the opening provided in the receptacle member through the opening of the bridge so as to put the holder between the optical subassembly and the receptacle body.

4. The optical transceiver according to claim 3,

wherein the receptacle member and one of optical subassemblies are able to rotate with the other of the optical subassemblies as a center of the rotation to come the package in contact to the housing.

5. The optical transceiver according to claim 4,

wherein the package of the transmitting optical subassembly has a box shape.

6. The optical transceiver according to claim 4,

wherein the package of the receiving optical subassembly has a box shape.

7. The optical transceiver according to claim 3,

wherein the opening provided in the bridge of the holder has a pipe surrounding the opening, and the opening provided in the receptacle member forms a hollow rim to receive the pipe of the holder.

8. The optical transceiver according to claim 2,

wherein each arm of the holder provides an inner rib in the tip thereof, and the receptacle member has a step abutting against the inner rib to put the receptacle member between the bridge and the inner rib of the holder.

9. The optical transceiver according to claim 2,

wherein the arm forms a concave surface facing the other arm and the receptacle member provides a convex surface in the side thereof to fit the concave surface of the holder.

10. The optical transceiver according to claim 9,

wherein one of arms of the holder provides a first concave surface with a first radius and the other of arms of the holder provides a second concave surface with a second radius greater than the first radius, and

wherein one side of the receptacle member provides a first convex surface with the first radius and the other side of the receptacle member provides a second convex surface with the second radius.

11. The optical transceiver according to claim 2,

wherein the housing forms a screw hole piercing from a front end to the groove of the housing, and the outer rib of the holder forms a tip surface butted with a screw inserted into the screw hole of the housing.

12. The optical transceiver according to claim 2,

wherein the opening provided in the folder has a pipe surrounding the opening, and the opening provided in the receptacle member forms a hollow rim to receive the pipe of the holder.

13. The optical transceiver according to claim 1,

wherein the receptacle member is made of resin coated with metal.

14. The optical transceiver according to claim 1,

wherein the holder is made of resin.

15. The optical transceiver according to claim 1,

wherein the holder is made of metal plate.