A Proposal and Analytical Investigation of an All-Optical T-type Flip-Flop Using Semiconductor Optical Amplifier Mach-Zehnder Interferometer Configuration for Differential Phase-Shift Keying Encoding Operation

作者：Shimizu Satoshi^*; Uenohara Hiroyuki

来源：Japanese Journal of Applied Physics, 2010, 49(6): 060206.

DOI：10.1143/JJAP.49.060206

An all-optical differential phase-shift keying (DPSK) regenerator with a DPSK demodulator and a conventional on-off keying (OOK) regenerator requires a DPSK encoding process that is realized by T-type flip-flop (T-FF) operation. To solve this problem, we propose an all-optical T-FF circuit consisting of counter-faced semiconductor optical amplifier (SOA)-based exclusive OR (XOR) gates for the first time. Numerical investigation with rate equation reveals the possibility of its stable operation in 10 Gbps with 2(7) - 1 pseudorandom binary sequence (PRBS) signal. It also reveals that it is necessary to decrease the equivalent turn-off time for high bit-rate operation using push-pull configuration.

• 出版日期2010-6