Interference filter for optical telecommunication

Optical: systems and elements – Light interference – Electrically or mechanically variable

Reexamination Certificate

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C359S577000, C385S027000

Reexamination Certificate

active

06842287

ABSTRACT:
A micro-optic Mach-Zehnder interferometer with a differential delay of n bit periods, where n is an integer number, and thermal bias control is useful as a spectral filter in front of a differential detection system to accomplish a balanced receiver. The interferometer may also be arranged as a Michelson interferometer or a dual-plate interferometer.

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patent: 6469817 (2002-10-01), Heflinger
patent: 6473214 (2002-10-01), Roberts et al.
patent: WO 9844635 (1998-10-01), None
Yonenaga et al., Aug. 1997, Journal of Lightwave Technology, vol. 15, No. 8, pp 1530-1537.*
Wedding et al., Oct. 1994, Journal of Lightwave Technology, vol. 10, No. 12, pp 1720-1727.*
Yonenaga et al., “Dispersion-Tolerant Optical Transmission System Using Duobinary Transmitter and Binary Receiver”, Journal of Lightwave Technology, vol. 15, No. 8, Aug. 1997, pp. 1530-1537.
B. Wedding et al., “10-Gb/s optical transmission up to 253 km Via Standard Single-Mode Fiber Using the Method of Dispersion-Supported Transmission”, Journal of Lightwave Technology, vol. 12, No. 10, Oct. 1994, pp. 1720-1727.

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