Intel Corporation

Avago Technologies Fiber IP (Singapore) Pte. Ltd

Guobin Liu

Scott P Dubal

William H Wang

Brian H Kim

Darren S Crews

Lee Xu

Chris Pavlas

Miaobin Gao

Christine M Krause

Graham Flower

Jesse Chin

Hui Xu

Poorya Saghari

Chien-Chang Liu

Yousheng Wu

Xiaojie J Xu

Maciej Machnikowski

Thiri Lwin

Simon Lee, Ii

Jianping Su

An-Nien Chen

Frank Wang

Embodiments of the present disclosure are directed toward techniques and configurations for an optical apparatus to control optical power of the light source. In one embodiment, the apparatus may include a transmitter and receiver to transmit and receive optical signals over an optical communication channel, and a controller to cause the transmitter to transmit pulse signals at a first power level and detect a change in optical power in the channel, indicating a presence of a signal from another optical apparatus. The controller may confirm that the detected apparatus is capable of communications at a second power level (greater than the first level) and initiate data transmission at the second level. Upon detection of a failure in the channel, the controller may cause the transmitter to halt the data transmission and restart the pulse signals at the first power level. Other embodiments may be described and/or claimed.

Optical apparatus with multiple transmission power levels

A method and an apparatus are provided for use in a parallel optical transmitter or transceiver to compensate for variations in optical crosstalk in an optical output power monitoring system that are caused by lasers being enabled and/or disabled. In particular, the method and apparatus cause adjustments to be made to the reference value of each optical channel based on determinations of whether one or more lasers of the other optical channels have been disabled or enabled. By making these adjustments, the average optical output power level of each laser of each channel can be maintained at a desired or required level even if one or more of the lasers of one or more of the other channels is enabled or disabled.

Method and apparatus for compensating for optical crosstalk in an optical output power feedback monitoring system of a parallel optical transmitter

Embodiments introduce redundant optical channels to significantly extend the lifetime of parallel optical transceivers. A plurality of transmitters, N, transmit on a plurality of optical channels, where N is an integer number of optical channels greater than 1. One or more redundant channels, M, are also provided. N+M multiple input shift registers provide multiple paths for signals from each of the transmitters to connect to N+M laser diodes. In the event up to M of the N+M laser diodes fail, the multiple input shift registers connect the N transmitters to functioning ones of the N+M laser diodes thus extending the life of the device. A corresponding scheme is also described for the receiver side.

Redundant channel implementation to extend optical transceiver lifetime and reliability

Growing community of inventors

San Luis Obispo, CA, United States of America

Guobin Liu