Redundant optical device array

Details Redundant optical device array Redundant optical device array

2001-06-29

2010-11-09

Bello, Agustin (Department: 2613)

Optical communications

Optical transceiver

C398S164000, C398S138000

Reexamination Certificate

active

07831151

ABSTRACT:
An optical module has multiple optical devices. At least two of the multiple optical devices are a group. Each of the optical devices in the group are individually selectable relative to the others. The optical module also has a controller, coupled to the devices such that the controller can select which of the devices in the group will be active at a given time. A communications network has a first transmitter having a number of usable channels, a first receiver, and optical fibers connecting the first transmitter to the first receiver. The first transmitter has multiple lasers, at least some being selectable as either active or backup lasers. The multiple lasers are controllable such that, if a specific channel is in use by an active laser and a laser failure occurs for that channel, a redundant laser can be substituted for the active laser and, after the substitution, the specific channel can be used using the redundant laser.

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