Apparatus for identifying optical array polarity and measuring optical signal and power or loss

Patent metadata

Field	Value
Publication number	US-9518892-B1
Application number	US-201514830564-A
Country	US
Kind code	B1
Filing date	Aug 19, 2015
Priority date	Aug 19, 2015
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

An apparatus for determining optical fiber array polarity is disclosed. The apparatus may be used to determine optical signal loss or intensity. An adapter may be used to couple the apparatus to a variety of optical fiber connectors. The apparatus includes a position sensing detector and processing circuitry. The position sensing detector includes a sensor that receives optical signals and electrodes that output respective output signals in response to receipt of an optical signal. The processing circuitry receives the output signals and identifies locations at which the optical signals were incident on the sensor. The processing circuitry also determines the receiving position in the optical array of an optical fiber and a polarity of the optical array based on the receiving position and a corresponding transmitting position. The processing circuitry may determine an intensity or loss of the optical signal based on an aggregate of the output signals.

First claim

The invention claimed is:

1. An apparatus for determining an optical fiber array polarity comprising:
a position sensing detector comprising:
a sensor positionable with respect to an optical array, wherein the sensor receives, from the optical array, a plurality of optical signals that are incident on the sensor while the sensor remains in a fixed position relative to the optical array, the plurality of optical signals emanating from a corresponding plurality of optical fibers forming the optical array, each optical fiber of the plurality of optical fibers having an associated transmitting position and receiving position in the optical array relative to other optical fibers in the optical array; and
a plurality of electrodes electrically coupled to the sensor, wherein the plurality of electrodes outputs a respective plurality of output signals in response to receipt of an optical signal of the plurality of optical signals by the sensor, the plurality of output signals being indicative of a location at which the optical signal of the plurality of optical signals was incident on the sensor; and

processing circuitry electrically coupled to the plurality of electrodes, wherein the processing circuitry:
receives the plurality of output signals for each of the plurality of optical signals;
identifies respective locations at which the plurality of optical signals were incident on the sensor;
determines, based on the identified locations, the receiving position in the optical array of at least one optical fiber of the plurality of optical fibers; and
determines a polarity of the optical array based on the determined receiving position of the at least one optical fiber and a corresponding transmitting position in the optical array of the at least one optical fiber.

2. The apparatus of claim 1 , wherein the processing circuitry further receives information indicating the transmitting position in the optical array of the at least one optical fiber.

3. The apparatus of claim 1 , wherein determining the polarity of the optical array further includes determining an offset between the determined receiving position and the corresponding transmitting position of the at least one optical fiber.

4. The apparatus of claim 1 , wherein the polarity of the optical array is determined to be a first type if the receiving position of the at least one optical fiber is the same as the corresponding transmitting position of the at least one optical fiber.

5. The apparatus of claim 1 , wherein the polarity of the optical array is determined to be a second type if the receiving position of the at least one optical fiber is offset by one position from the corresponding transmitting position of the at least one optical fiber.

6. The apparatus of claim 1 , wherein the polarity of the optical array is determined to be a third type if the receiving position of the at least one optical fiber is transposed from the corresponding transmitting position of the at least one optical fiber.

7. The apparatus of claim 1 , wherein the processing circuitry further determines an order of receiving positions of the optical fibers by which the plurality of optical signals were detected to emanate from the optical fibers, and receives an order of transmitting positions of the optical fibers by which the plurality of optical signals were transmitted into the optical fibers.

8. The apparatus of claim 7 , wherein determining the polarity of the optical array further includes comparing the order of the receiving positions and the order of the transmitting positions to identify an offset between the respective receiving and transmitting positions.

9. The apparatus of claim 1 , further comprising:
an interface communicatively coupled to the processing circuitry, wherein the interface receives an indication of the polarity of the optical array and indicates the polarity to a user.

10. The apparatus of claim 1 , wherein the apparatus is selectively couplable to the optical array by an interchangeable adapter having a gender or shape compliant with a connector of the optical array.

11. The apparatus of claim 1 , wherein:
the optical array is optically coupled to the apparatus at a fixed position while the plurality of optical signals are incident on the sensor; and
the sensor is formed of a single substrate having an optical sensing area of sufficient size to receive the plurality of optical signals while the sensor remains in a fixed position relative to the optical array.

12. The apparatus of claim 1 , further comprising:
an optical system that is optically coupled to the sensor and the optical array, wherein the optical system receives, from the optical array, the plurality of optical signals and redirects at least one optical signal of the plurality of optical signals to the optical array.

13. A method for determining optical fiber array polarity comprising:
receiving, at a sensor of a position sensing detector, a plurality of optical signals from an optical array, wherein the plurality of optical signals are incident on the sensor while the sensor remains in a fixed position relative to the optical array, the plurality of optical signals emanating from a corresponding plurality of optical fibers forming the optical array, wherein the sensor is positionable with respect to the optical array and each optical fiber of the plurality of optical fibers has an associated transmitting position and receiving position relative to other optical fibers in the optical array;
outputting, by a plurality of electrodes of the position sensing detector, a respective plurality of output signals in response to receipt of an optical signal of the plurality of optical signals by the sensor, each output signal of the plurality of output signals indicating a proximity of a location at which the optical signal of the plurality of optical signals was incident on the sensor to a respective electrode of the plurality of electrodes;
identifying, for the plurality of optical signals, respective locations at which the plurality of optical signals were incident on the sensor, wherein the respective locations are identified based on the corresponding plurality of output signals for each received optical signal;
determining, based on the identified locations, the receiving position in the optical array of at least one optical fiber of the plurality of optical fibers; and
determining a polarity of the optical array based on the determined receiving position and a corresponding transmitting position in the optical array of the at least one optical fiber.

14. The method of claim 13 , further comprising:
receiving information indicating the corresponding transmitting position in the optical array of the at least one optical fiber.

15. The method of claim 13 , wherein determining the polarity of the optical array further includes determining an offset between the determined receiving position of the at least one optical fiber and the corresponding transmitting position.

16. The method of claim 15 , further comprising:
determining an order of receiving positions of the optical fibers by which the plurality of optical signals were detected to emanate from the optical fibers; and
receiving an order of transmitting positions of the optical fibers by which the plurality of optical signals were transmitted into the optical fibers,
wherein determining the polarity of the optical array further includes comparing the order of the receiving positions and the order of the transmitting positions to identify an offset between the respective receiving and transmitting positions.

Assignees

• Fluke Corp

Inventors

• Schell J David

Classifications

• G01J1/42

  using electric radiation detectors (optical or mechanical part G01J1/04; by comparison with a reference light or electric value G01J1/10) · CPC title

• G02B6/3885

  Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type (optical ribbon cable G02B6/4403, G02B6/448) · CPC title

• G01J1/4228

  arrangements with two or more detectors, e.g. for sensitivity compensation · CPC title

• G01M11/33 Primary

  with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face · CPC title

• G01D5/268

  using optical fibres (G01D5/28 - G01D5/38 take precedence) · CPC title