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Ultrahigh Speed Reconfigurable Logic Operations Based on Single Semiconductor Optical Amplifier
Sanmukh Kaur,Rajinder-Singh Kaler 한국광학회 2012 Current Optics and Photonics Vol.16 No.1
We demonstrate an optical gate architecture using a single SOA to perform AND, OR and NOT logic functions. Simple reconfigurable all-optical logic operations are implemented using RZ modulated signals at 40 Gb/s. Contrast ratio and extinction ratio values have been analysed for the different types of logic gates. Maximum extinction ratio and contrast ratio achieved are 19dB and 17.2 dB respectively. Simple structure and potential for integration makes this architecture an interesting approach in photonic computing and optical signal processing.
Sanmukh Kaur,Rajinder Singh Kaler,Tara-Singh Kamal 한국광학회 2015 Current Optics and Photonics Vol.19 No.3
We propose a new and potentially integrable scheme for the realization of an all-optical binary fulladder employing two XOR gates, two AND gates, and one OR gate. The XOR gate is realized usinga Mach-Zehnder interferometer (MZI) based on a semiconductor optical amplifier (SOA). The AND andOR gates are based on the nonlinear properties of a semiconductor optical amplifier. The proposed schemeis driven by two input data streams and a carry bit from the previous less-significant bit order position. In our proposed design, we achieve extinction ratios for Sum and Carry output signals of 10 dB and 12dB respectively. Successful operation of the system is demonstrated at 10 Gb/s with return-to-zeromodulated signals
All-optical Integrated Parity Generator and Checker Using an SOA-based Optical Tree Architecture
Nivedita Nair,Sanmukh Kaur,Rakesh Goyal 한국광학회 2018 Current Optics and Photonics Vol.2 No.5
The Semiconductor Optical Amplifier (SOA)-based Mach-Zehnder interferometer is a major contributor in all-optical digital processing and optical computation. Optical tree architecture provides one of the new, alternative schemes for integrated all-optical arithmetic and logical operations. In this paper, we propose an all-optical 3-bit integrated parity generator and checker using SOA-MZI-based optical tree architecture. The proposed scheme, able to process input signals at a desired operating wavelength, has been characterized using RZ-modulated signals at 10 Gbps. The maximum extinction ratios achieved at the output of the parity generator and checker are 10 dB and 8 dB respectively.