Optical switch with adjustable optical loss

Details Optical switch with adjustable optical loss Optical switch with adjustable optical loss

2006-10-24

2006-10-24

Palmer, Phan (Department: 2874)

Optical waveguides

With optical coupler

Switch

C385S016000, C385S024000

Reexamination Certificate

active

07127137

ABSTRACT:
An apparatus and method of controlling optical loss in an optical switch to equalize optical power or loss in a group of optical signals in an optical transmission system relatively insensitive to mechanical vibration. In one embodiment a group of optical signals is input into an optical switch and selected optical signals are variably attenuated using synchronized control to two mirrors in order to provide more uniform power distribution among the group of optical signals without enhancing vibration sensitivity of the optical switch.

REFERENCES:
patent: 6456751 (2002-09-01), Bowers et al.
patent: 6697547 (2004-02-01), Walter et al.
patent: 6904195 (2005-06-01), Bowers et al.
Roberto Gaudino, et al., “MOSAIC: A Multiwavelength Optical Subcarrier Multiplexed Controlled Network,” IEEE Journal on Selected Areas in Communications, vol. 16, No. 7, pp. 1270-1285 (Sep. 1998).
S. Johansson, et al., “Optical Cross-Connect System in Broadband Networks: System Concept and Demonstrators Description,” Journal of Lightwave Technology, vol. 11, No. 5/6, pp. 688-694 (May-Jun. 1993).

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