This paper gives a comparative analysis of an inductorless Complementary Metal Oxide Semiconductor (CMOS) Single-ended current-mode Transimpedance Amplifier (TIA) intended for use in front-end Optical communication for wideband operation. This technique uses N similar TIAs in parallel configuration to boost the overall bandwidth as well as the transimpedance gain which is not possible with volt...

-In this paper, we propose the scheme for improving the characteristics of wavelength converter based on cross-gain modulation (XGM) in semiconductor optical amplifier (SOA). In front of the wavelength converter, a pre-amplifier is placed and adjusted to get optimal performance of wavelength converter in terms of bit error rate (BER) and corresponding power penalty. In the simulation, wavelengt...

All optical wavelength conversion is demonstrated at 10 Gbit/s over a wavelength span of 10 nm without any bit loss by the use of Semiconductor Optical Amplifier (SOA) in a Mach-Zehnder configuration. These wavelength conversion architectures are implemented by using SOA cross-gain modulation (XGM) and cross-phase modulation (XPM) techniques. We have compared the results of both techniques on t...

An experimental technique based on frequency-resolved four-wave mixing is proposed for the investigation of phonon-assisted capture of electrons and holes in electrically pumped semiconductor quantum wells. We show how this technique can be used to directly measure the intrinsic capture lifetime, with no need for involved numerical fits. We also present experimental results from an application ...

We report on a study of a 698 nm extended cavity semiconductor laser with intracavity narrowband optical feedback from a whispering gallery mode resonator. This laser comprises an ultrahigh-Q (>10(10)) resonator supporting stimulated Rayleigh scattering, a diffraction grating wavelength preselector, and a reflective semiconductor amplifier. Single longitudinal mode lasing is characterized with ...

We present recent advances in multi-wavelength, power-equalized laser sources that incorporate a semiconductor optical amplifier (SOA) and simple optical filters, such as Lyot-type and Fabry-Perot, for comb generation. Both linear and ring-cavity configurations are presented, and single-pass optical feedback technique is proposed to improve the performance in terms of the number of simultaneous...