Browse Prior Art Database

REDUNDANCY IN DIODE LASER APPLICATIONS

IP.com Disclosure Number: IPCOM000024427D
Original Publication Date: 1980-Aug-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 1 page(s) / 55K

Publishing Venue

Xerox Disclosure Journal

Abstract

In many diode laser applications such as optical fiber communications, raster input and output scanners and optical memories, it is important that the light output from the laser is not interrupted due to failure of the laser; otherwise, the functional capabilities of the particular application are interrupted for a period of time until repair can be procured, for example, by a technical representative.

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XEROX DISCLOSURE JOURNAL

REDUNDANCY IN DIODE LASER APPLIC AT10 NS
William Streifer

Donald R. Scifres
Robert D. Burnham

22 20. /

Proposed Classification
U.S. Cl. 331/94.5H Int. C1. HOls 3/00

3a

t

30.6,

I

30.

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In many diode laser applications such as optical fiber communications, raster input and output scanners and optical memories, it is important that the light output from the laser is not interrupted due to failure of the laser; otherwise, the functional capabilities of the particular application are interrupted for a period of time until repair can be procured, for example, by a technical representative.

In order to prevent these interruptions, more than one diode laser may be used in the particular application. One or more photodetectors may also be employed to monitor the single laser then in operation. When the diode laser fails or if its light output or efficiency drop to an unacceptable level, another diode laser may be automatically placed into operation to continue the normal functioning of the laser application.

Volume 5 Number 4 July/August 1980 399

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