All optical wavelength converter

Details All optical wavelength converter All optical wavelength converter

2008-07-01

2008-07-01

Li, Shi K (Department: 2613)

Optical communications

Optical repeater system

Specific optical elements

C359S326000

Reexamination Certificate

active

07394990

ABSTRACT:
An optical wavelength converter receives an input optical signal, and in response, generates an output optical signal having a wavelength that is different from the wavelength of the received input signal. An optical amplifier amplifies the received input signal and delivers the amplified signal to an optical splitter adapted to split the amplified signal into two identical optical signals. An optical multiplexer receives one of the split signals as well as a continuous wave optical signal to generate a combined signal. An semiconductor optical amplifier receives the combined signal at its first side, and the other one of the split signals at its second side. The output signal is generated as a result of a counter-propagating four-wave mixing occurring within the semiconductor optical amplifier. This output signal has the same wavelength as the continuous-wave signal and has an amplitude modulation that is identical to the amplitude modulation of the input signal.

REFERENCES:
patent: 7092145 (2006-08-01), Takagi

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