Socket for a detachable plug and socket connection for coupling an optical fiber and detector arrangement to a light source

• US 4,362,360 A
• Filed: 04/13/1981
• Issued: 12/07/1982
• Est. Priority Date: 03/01/1978
• Status: Expired due to Fees

• Current Assignee: US Philips Corporation (Koninklijke Philips N.V.)
• Original Assignee: US Philips Corporation (Koninklijke Philips N.V.)
• Inventors: Mannschke, Lothar P.
• Primary Examiner(s): Lee, John D.
• Assistant Examiner(s): Gonzalez, Frank
• Application Number:
  US06/253,485
• Time in Patent Office: 603 Days
• Field of Search: 350/96.20, 350/96.21, 250/227, 250/551, 250/552
• US Class Current: 385/88
• CPC Class Codes: G02B 6/4202 for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
• CPC Class Codes: G02B 6/421 the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
• CPC Class Codes: G02B 6/4226 Positioning means for moving the elements into alignment, e.g. alignment screws, deformation of the mount
• CPC Class Codes: G02B 6/4292 the light guide being disconnectable from the opto-electronic element, e.g. mutually self aligning arrangements
• CPC Class Codes: H04B 10/50 Transmitters

Abstract

The invention relates to a socket for a plug and socket connection for coupling an optical fiber used in optical telecommunication systems. The socket comprises a light detector for converting the light radiated adjacent the optical fiber into an electrical signal for controlling the power dissipation of the light source.

Claims

1. A socket provided with a light source, for a detachable plug and socket connection for coupling an optical fiber to the light source, comprising:

an intermediate member, having a light source end near the light source and having a plug end, said member having a fiber guide therein extending from the light source end to the plug end, said light source emitting light such that a first portion of the light is emitted in a direction toward the fiber guide such that, in the absence of intervening obstacles, the first portion of light will enter the fiber guide, and a second portion of the light is emitted in a direction away from the fiber guide such that regardless of whether or not there are intervening obstacles the second portion of light will not enter the fiber guide; and

a light detector disposed adjacent to the fiber guide at the light source end in such a manner as to receive at least part of the second portion of light emitted by the light source.

3. A socket as claimed in claim 1 or 2, wherein:

the fiber guide in the intermediate member is for accommodating an end of an optical fiber secured in the plug; and

the light detector is in mating contact with a light-emitting surface of the light source, the light source and detector being cast in synthetic resin in which a second fiber guide is formed, the second fiber guide being in mating contact with the fiber guide in the intermediate member.

4. A socket as claimed in claim 3, wherein one end of an optical fiber is in mating contact with the light-emitting surface of the light source and is cast in the synthetic resin, the other end of the fiber terminating in the fiber guide in the intermediate piece.

5. A socket as claimed in claim 1 or 2, wherein the socket further comprises an outer can and an inner member, disposed in the outer can, said inner member including the intermediate member, said outer can comprising mounting means for mounting the socket on a support for the light source and adjusting means for positioning the inner member with respect to the light source.

2. A socket provided with a semiconductor light source, for a detachable plug and socket connection for coupling an optical fiber to the semiconductor light source, comprising:

an intermediate member, having a light source end near the light source and having a plug end, said member having a fiber guide therein extending from the light source end to the plug end; and

a disc-shaped semiconductor light detector disposed adjacent to the fiber guide at the light source end and having a hole in which the fiber guide ends.

6. A socket provided with a light source, for a detachable plug and socket connection for coupling an optical fiber to the light source, comprising:

an intermediate member, having a light source end near the light source and having a plug end, said member having a fiber guide therein extending from the light source end to the plug end, said light source emitting light such that a first portion of the light is directed into the fiber guide, and a second portion of the light is directed away from the fiber guide;

a light detector disposed adjacent to the fiber guide at the light source end in such a manner as to receive at least part of the second portion of light emitted by the light source;

an outer can;

an inner member disposed in the outer can, said inner member including the intermediate member, said outer can comprising mounting means for mounting the socket on a support for the light source; and

adjusting means for positioning the inner member with respect to the light source;

wherein the outer can has a bearing surface and the inner member has a flange which bears upon the bearing surface, the adjusting means being set screws fitted in the outer can and whose ends engage the inner member, said socket further comprising a ring-shaped resilient element spaced between the set screw ends and the flange of the inner member.

7. A socket provided with a semiconductor light source, for a detachable plug and socket connection for coupling an optical fiber to the semiconductor light source, comprising:

an intermediate member, having a light source end near the light source and a plug end, said member having a fiber guide therein extending from the light source end to the plug end;

a disc-shaped semiconductor light detector disposed adjacent to the fiber guide at the light source end and having a hole in which the fiber guide ends;

an outer can;

an inner member disposed in the outer can, said inner member including the intermediate member, said outer can comprising mounting means for mounting the socket on a support for the light source; and

adjusting means for positioning the inner member with respect to the light source;

wherein the outer can has a bearing surface and the inner member has a flange which bears upon the bearing surface, the adjusting means being set screws fitted in the outer can and whose ends engage the inner member, said socket further comprising a ring-shaped resilient element spaced between the set screw ends and the flange of the inner member.