Apparatus and method for leveling optical fibers before polishing

• US 6,157,863 A
• Filed: 02/27/1998
• Issued: 12/05/2000
• Est. Priority Date: 02/27/1998
• Status: Expired due to Term

• Current Assignee: Ciena Corporation
• Original Assignee: Ciena Corporation
• Inventors: Shah, Nadir, Chandler, William Keith
• Primary Examiner(s): Grant, William
• Assistant Examiner(s): Gain, Edward F.
• Application Number:
  US09/032,034
• Time in Patent Office: 1,012 Days
• Field of Search: 385/85, 385/52, 385/97, 700/59, 700/58, 700/57, 700/56, 700/66, 700/302, 700/301, 702/152, 702/162, 73/862.046, 451/278
• US Class Current: 700/56
• CPC Class Codes: B24B 19/226 of the ends of optical fibres

Abstract

An optical fiber alignment apparatus for leveling respective distal ends of a plurality of optical fibers prior to commencing a polishing process. The apparatus includes an aligning device having a plurality of receptacles for securing the corresponding plurality of optical fibers such that distal ends of the optical fibers extend below the base of the aligning device. A sensor array contacts the distal ends of the optical fibers and generates sensor alignment signals indicating the position of the fiber distal ends extending below the aligning device relative to a horizontal reference plane. A monitor receives and displays digital signals corresponding to the sensor alignments signals. Those optical fibers that are not aligned are then adjusted to until all the fibers are aligned and leveled with respect to the horizontal reference plane as viewed on the monitor. The precision of the horizontal alignment offered by the sensor array and digital monitor display allows the subsequent polishing process to be performed with a greater degree of reliability and consistency.

Claims

1. An optical fiber alignment apparatus for leveling respective distal ends of a plurality of optical fibers, comprising:

an aligning device having a plurality of receptacles for securing the plurality of optical fibers therein, wherein a distal end of each optical fiber extends below a base of the aligning device;

a sensor array for contacting the distal ends of the optical fibers and for generating sensor alignment signals indicative of a position of the distal ends extending below the aligning device relative to a horizontal reference plane; and

a monitor for receiving and displaying digital alignment signals representative of the sensor alignments signals,

a position of non-aligned fibers in the receptacles of the aligning device being further adjustable based on an output from said monitor so that the fiber distal ends are leveled relative to the horizontal plane.

2. The apparatus of claim 1, wherein the sensor array is composed of a plurality of sensors arranged in a matrix grid.

3. The apparatus of claim 2, wherein the plurality of sensors are infrared sensors.

4. The apparatus of claim 2, wherein the plurality of sensors are piezoelectric sensors.

5. The apparatus of claim 2, wherein the sensor alignment signals are analog signals, and further comprising an analog to digital converter for receiving and converting the analog sensor alignment signals to the digital alignment signals.

6. The apparatus of claim 5, further comprising an image processing apparatus for receiving the digital alignment signals and for processing the digital alignment signals for display on the monitor.

7. A method of leveling a plurality of optical fibers, comprising steps of:

securing a plurality of optical fibers in an aligning device such that a distal end of each optical fiber extends below a base of the aligning device;

contacting the distal ends of the optical fibers to a sensor array;

generating sensor alignment signals from the sensor array indicative of a position of the distal ends extending below the aligning device relative to a horizontal reference plane;

receiving and displaying, on a monitor, a plurality of digital alignment signals representative of the sensor alignment signals; and

further adjusting a position of the respective fibers secured in the aligning device for leveling the fiber distal ends relative to the horizontal reference plane in accordance with said displayed plurality of digital alignment signals.

8. The method of claim 7, wherein said sensor alignment signals are analog signals and further comprising a step of converting the analog sensor alignment signals to the plurality of digital alignment signals.

9. The method of claim 8, further comprising steps of receiving the plurality of digital alignment signals and processing the plurality of digital alignment signals for display on the monitor.

10. The method of claim 9, wherein said adjusting step is repeatedly performed until all the fiber distal ends are level as displayed on the monitor.