A negative feedback optical amplifier with a high-frequency band-pass function was realized in an

We demonstrated that the wavelength range of laser oscillation generated in an optical loop amplifi er can

A negative feedback semiconductor optical amplifier was realized in an InGaAsP-InP amplifier using a fiber Bragg grating based on a phase mask interferometer. The negative feedback effect recovers the signal loss to a higher definition and lower error probability. The optical amplifier with negative feedback provided an output signal whose gain and waveform was srabilized optically.

波長変換技術は、WDM通信において中核となる技術であるが、現時点ではレーザー光を一度電気信号に変換してから目的の波長のレーザー光を得る効率的でない手法にて実現されている。我々は本論文にて、光トライオードを用いて光信号のみで波長変換及びスイッチングを提案する。

A negative feedback semiconductor optical amplifi er was realized in an InGaAsP-InP amplifi er using a

An excellent cavity ring-down spectroanalyzer was realized using a reflective semiconductor optical amplifier. A negative feedback optical amplification effect of the amplifier recovers signal loss to a higher definition and provides an output signal whose baseline was reduced optically. © 2010 the Institute of Electrical Engineers of Japan.

An all-optical triode based on a tandem wavelength converter was realized in two negative feedback

A negative feedback optical amplification effect was confirmed using negative feedback based on cross-gain modulation in an InGaAsP/InP semiconductor optical amplifier. The optical amplifier with negative feedback was capable of providing an output signal whose gain, wave form and baseline, were stabilized optically. The distortion of the wave form was extremely small in a wide frequency band of 0.1-10 GHz. In addition, the gain can be adjusted by controlling the amount of negative feedback power using a variable optical attenuator. In physics, the optical amplifier is considered as the optical equivalent of a noninverting operational amplifier in electronics. (c) 2006 American Institute of Physics.