Demodulator

Details Demodulator Demodulator

2009-10-01

2011-11-29

Sanghavi, Hemang (Department: 2874)

Optical: systems and elements

Optical demodulator

C398S188000, C398S201000, C398S202000, C398S212000

Reexamination Certificate

active

08068273

ABSTRACT:
A demodulator and method are provided. The demodulator for demodulating an optical signal, includes a splitter that splits a differential phase modulation signal into a first split light component and a second split light component, couples the first split light component to a first optical path and the second split light component to a second optical path, a first medium disposed on the first optical path, a second medium disposed on the second optical path and having a refractive index different from that of the first medium, and a combiner that combines the first split light component that has passed through the first medium and the second split light component that has passed through the second medium, wherein one of the first split light component and the second split light component is delayed in relation to the other.

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“Partial DPSK with excellent filter tolerance and OSNR sensitivity”, Electronics Letters Nov. 9, 2006 vol. 42 No. 23.
UK Search Report for GB 0917155.4 issued Dec. 22, 2009.

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