A novel approach to all-optical wavelength conversion by utilizing a reflective semiconductor optical amplifier in a co-propagation scheme

Reflective Semiconductor Optical Amplifier Pulse Propagation Model

“…RSOAs have shown promise for applications in wavelength division multiplexed passive optical networks (PONs) and in fiber ring mode-locked lasers. [1][2][3]. It is of interest to model the amplification of optical pulses in RSOAs.…”

A novel all optical method of implementing an n-bit wavelength encoded complete digital data comparator using nonlinear semiconductor optical amplifiers

“…But a number of significant drawbacks of electronic/optoelectronic memory prevent the scientists and researchers to build-up a real life super fast optical/optoelectronic computer. In comparison to these schemes, the proposal for representing binary logic states by different wavelengths of a wave removes a lot of difficulties what one found in other proposed schemes [17][18][19][20]. In a similar manner, in this communication we have chosen two different and specific wavelengths 1 and 2 to represent the binary information '0' and '1' respectively.…”

“…Particularly, all optical logic gates based on the nonlinear effects of SOAs such as cross gain modulation (XGM), cross phase modulation (XPM), four wave mixing (FWM) and cross polarization modulation are promising as SOAs exhibit high gain in optical power, strong change of refractive index and therefore suitable for photonic up gradation [21]. It should be parallel mentioned here that such properties are independent of polarization and also insensitive to the wavelength of the input data, provided if it is conducted within the SOA gain bandwidth limit [18,19,[22][23][24]25,26]. This can be controlled by the intensity of the pump beam.…”

An all optical approach of frequency encoded NOT based Latch using semiconductor optical amplifier

“…Though some successes have been achieved in the last few decades to develop optical memories, flip-flop, bi-stable multivibrators and latches, still the ultimate goal of developing an optical computer has not been fulfilled yet. In this communication we have proposed a methodology of developing optical NOT based latch using a specific non-linear behavior of semiconductor optical amplifiers (SOA) accommodating with frequency encoding technique [7][8][9][10][11]. In most of the encoding cases, presence of optical signal at the input or output of a logical device is encoded as '1' logic state and absence of optical signal as '0' logic state.…”