Abstract
We demonstrated that an all-optical triode can be achieved by using a tandem wavelength converter employing cross-gain modulation (XGM) in semiconductor optical amplifiers (SOAs). Wavelength conversion and switching characteristics was investigated by introducing a control light together with input signal light. [1, 2] As the optical triode operates by controlling SOA’s gain, a negative feedback (NF) optical amplification effect occurs by injecting the input signal light into the input and control ports. [2, 3] As a result, improvement on extinction ratio, noise suppression and pattern effect was expected. In this report, we investigate about noise suppression characteristic during signal light amplification using optical triode.
© 2013 IEEE
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