Multilevel optical phase modulator

Details Multilevel optical phase modulator Multilevel optical phase modulator

2011-01-25

2011-01-25

Thompson, Timothy J (Department: 2873)

Optical: systems and elements

Optical modulator

Light wave temporal modulation

C359S245000

Reexamination Certificate

active

07876491

ABSTRACT:
To take out monitor light unaffected by a multilevel optical phase-modulated component. For the purpose, a phase-shift unit that controls phases of plural (n, n is an integral number equal to or greater than 2) input lights, plural (n, n is an integral number equal to or greater than 2) phase modulating units that respectively phase-modulate the input lights from the phase-shift units, a first coupling unit that couples and outputs the phase-modulated lights from the plural phase modulating units as multilevel optical phase-modulated signal light, and a second coupling unit that couples and outputs non-phase-modulated lights from the plural phase modulating units as coupled light are provided.

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U.S. Appl. No. 12/230,792; filed Sep. 4, 2008.

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