Browse Prior Art Database

Automatic Interconnection System for Optical Devices

IP.com Disclosure Number: IPCOM000120346D
Original Publication Date: 1991-Apr-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 3 page(s) / 85K

Publishing Venue

IBM

Related People

Castagnet, B: AUTHOR

Abstract

A new system for automatically interconnecting optical devices has been realized, for implementation in automatic tests of laser diodes and photo diodes in development or production environments.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 79% of the total text.

Automatic Interconnection System for Optical Devices

      A new system for automatically interconnecting optical
devices has been realized, for implementation in automatic tests of
laser diodes and photo diodes in development or production
environments.

      The system includes:
   -    A rotating plate which is shown in Fig. 1. It supports all
the mechanical heads and is controlled by a stepper motor (precision:
1/1000th of degree), allowing accurate positioning of the head to be
used during a test in front of the component.
   -    A mechanical head shown in Fig. 2. Stepper motors allow for
3D displacements for very fine (1 micron on X and Y axis and 10
microns on Z axis) alignment with optical component to be tested.

      A fiber insertion mechanism as shown in Fig. 3 and placed in
the center of each mechanical head tube. Indeed, even with a high
positioning precision, automatic insertion of a fiber ferrule into a
fixed component is not easily achieved, especially since tolerance
between ferrule and component hole has to be very tight (< 5 microns)
to allow good optical beam coupling.The fiber insertion mechanism
thus consists of an optical fiber housed in a mechanical structure
allowing soft insertion in a connectorized optical component (or
optical beam coupling in case of non-connectorized component). The
fiber (filled with dots) is protruding from the fixture. Four
flexible strips (filled in plain) are insuring the soft insertion by
absorbi...