Optical wavelength converter with a semiconductor optical...

Details Optical wavelength converter with a semiconductor optical... Optical wavelength converter with a semiconductor optical...

2006-06-20

2006-06-20

Keith, Jack (Department: 3663)

Optical: systems and elements

Optical amplifier

Particular active medium

C359S237000, C359S238000, C359S239000, C385S001000

Reexamination Certificate

active

07064891

ABSTRACT:
An optical function device capable of controlling an optical signal with another optical signal, wherein a modulated input light Iinof a wavelength λ1is coupled with a bias light Ibiasof a wavelength λ2, and the thus coupled input and bias lights are input to a first semiconductor optical amplifying element48, so that the bias light Ibias is intensity-modulated in a phase reversed with respect to the input light Iin, while the input light Iinis cut by a first wavelength extracting element56.A control light Icof the wavelength λ1is coupled with the intensity-modulated bias light Ibiasof the wavelength λ2, and the thus coupled control and bias lights are input to a second optical amplifying element50, so that the once reversed bias light Ibiasof the wavelength λ2is intensity-modulated with respect to the control light Icof the wavelength λ1, and is extracted as an output light by a second wave extracting element50.The optical function device functions as a three-terminal optical computing and amplifying device, a three-terminal optical switching device or an optical DEMUX device, which is capable of controlling an optical intensity by using one wavelength and which permits multi-stage connection.

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