Early warning failure detection for a lasing semiconductor...

Details Early warning failure detection for a lasing semiconductor... Early warning failure detection for a lasing semiconductor...

2005-06-14

2005-06-14

Hellner, Mark (Department: 3663)

Optical: systems and elements

Optical amplifier

Particular active medium

C359S337000, C398S037000

Reexamination Certificate

active

06906856

ABSTRACT:
Optical systems and devices are provided that include or facilitate the ability to provide early detection of the failure of an optical transmitter such as a laser. Such detection may be made with reference to various aspects of the operation and performance of the optical transmitter. For example, some of the optical systems and devices employ wavelength shift information to make determinations concerning potential failure of an optical transmitter. Other optical systems and devices use information concerning the efficiency with which an incoming pump current is converted into the ballast laser signal changes to make determinations concerning potential failure of an optical transmitter.

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