Distribution frame and optical connector holder combination

• US 5,353,367 A
• Filed: 11/29/1993
• Issued: 10/04/1994
• Est. Priority Date: 11/29/1993
• Status: Expired due to Term

• Current Assignee: Siecor Technology, Inc. (Corning Incorporated)
• Original Assignee: Northern Telecom Limited (Nortel Networks Corporation)
• Inventors: Czosnowski, W. Michal, Thomassin, Michel J.
• Primary Examiner(s): Lee, John D.
• Assistant Examiner(s): Heartney, Phan Thi
• Application Number:
  US08/158,540
• Time in Patent Office: 309 Days
• Field of Search: 385/135, 385/136, 385/137, 385/138, 385/139, 385/134, 439/49, 439/54, 439/709, 439/719, 361/428, 361/429
• US Class Current: 385/135
• CPC Class Codes: G02B 6/4452 Distribution frames
• CPC Class Codes: G02B 6/44526 Panels or rackmounts covering a whole width of the frame or rack
• CPC Class Codes: G02B 6/44528 Patch-cords; Connector arrangements in the system or in the box routing arrangements H04Q1/00
• CPC Class Codes: G02B 6/4454 with splices
• CPC Class Codes: G02B 6/4455 characterised by the way of extraction or insertion of the cassette in the distribution frame, e.g. pivoting, sliding, rotating or gliding

Abstract

Optical fiber distribution frame with optical test arrangement for locating both ends of a patchcord extending between optical connector holders. Each holder has an array of mounting position for optical connectors to which patchcord extend. Each patchcord also has a test fiber with ends directed outwardly from fronts of the holders in which the patchcord ends are housed.

Claims

1. A distribution frame and optical connector holder combination comprising:

distribution frame means for receiving a plurality of optical connector holders;

a plurality of optical connector holders receivable within the frame means, the holders having mounting means for positioning a plurality of optical connectors which, when mounted, have first ends which, in different holders, are for selective optical interconnection from one connector to another, and second ends for connection to optical fibers in the holders and each holder the mounting positions for a plurality of optical connectors extend, in an array across the holder, the holder having test locations corresponding to the mounting positions located forwardly of the array of mounting positions, the test locations also being relatively disposed to form an array with each test location and its mounting position being correspondingly disposed in their associated arrays;

and a plurality of optical patch cords each having a signal transmission optical fiber for the selective optical interconnection of first ends of the connectors, and a test means comprising a test optical fiber extending along the patch cord, the test optical fiber having light transmission and light receiving ends disposable in test locations in the holders carrying the selected connectors to enable the passage of light along the test optical fiber and provide an indication of the ends of the optical patch cord.

2. A combination according to claim 1 wherein each holder has a flange formed with spaced slots providing the array of test locations and each of the patch cords has, at each end of its test optical fiber, means for mounting the test fiber end within a chosen slot.

3. A combination according to claim 2 including light source means for directing light into the end of a fiber disposed in a test location, the light source means having means for mounting it upon the flange and in a position for directing light along the fiber.

4. A combination according to claim 3 wherein the means for mounting the light source means coacts with the flange to enable the light source means to slide along the flange from one test location to another of the test location array.

5. A combination according to claim 2 wherein the means for mounting each test optical fiber end within a chosen slot comprises a mounting member surrounding the associated fiber end, the mounting member being slidable into and out of the chosen slot.

6. A combination according to claim 1 wherein in each optical patch cord, the test optical fiber and the signal transmission optical fiber extend between end regions of the patch cord in close relationship and, in the end regions, the test optical fiber diverges from the signal transmission fiber to enable an end of the test optical fiber to be located in a selected holder in a test location spaced from the first end of a chosen connector in a corresponding mounting position for receiving the associated end of the signal transmission fiber.

7. An optical patch cord having two ends with connector means at each end for connection to a mating connector means, a signal transmission optical fiber and a test optical fiber extending along the patch cord from end region to end region, a flexible tubular member extending from end-to-end of the patch cord and surrounding the signal transmission and test optical fibers, and at each end region the signal transmission optical fiber extending to the connector means and the test optical fiber diverging from the signal transmission optical fiber and passing through the tubular member to have an end portion extending from and being freely flexibly movable relative to the tubular member, the test optical fiber having accessible ends for transmission into one end of and identification at the other end of a test light signal to be passed along the test fiber.