Search

Apol-FSK modulation format which combined the advantages of FSK and alternate polarization (APol) in 50 Gb/s optical transport network for 5G is proposed for the first time, the polarization switching between adjacent bits disables power interactions between them, resulting in a lower pulse interaction and a larger nonlinear tolerance. At the same time, the orthogonal polarization between bits is maintained over long transmission distance independently of PMD impacts in the transmission line. The transmission characteristics of Apol-FSK signal at 50 Gb/s compared with CSRZ-FSK and RZ-DPSK signal are investigated in this paper. Apol-FSK signal shows better transmission performance than CSRZ-FSK and RZ-DPSK signals, which could be one of the most potential solutions for future high-speed transmission systems.

We proposed and investigated superimposing intensity-modulated labels onto high-speed carrier-suppressed return-to-zero frequency shift keying-modulated payloads in optical label-switching packet networks. The transmission performances of 2.5 Gb/s ASK label on 40 Gb/s CSRZFSK payload is studied for the first time.

A novel Chirped Return to Zero Frequency Shift Keying (CRZFSK) transmitter that can operate at 40 Gb/s and above is proposed. The transmission characteristics of a CRZFSK signal at 40 Gb/s are investigated under varying dispersion management. The resilience of received power and BER under different launch power is obtained.

We proposed and investigated superimposing intensity modulated labels onto high speed frequency modulated payloads in optical label switching packet networks. The transmission performances of 2.5Gb/s ASK label on 40Gb/s CSRZFSK payload is studied for the first time

We proposed and investigated superimposing intensity modulated labels onto high speed frequency modulated payloads in optical label switching packet networks. The transmission performances of 2.5Gb/s ASK label on 40Gb/s 33% RZFSK payload is studied for the first time.

A novel carrier-suppressed return-to-zero frequency shift keying (CSRZFSK) transmitter that can operate at 40 Gb/s and above is proposed for the first time. The transmission characteristics of the CSRZFSK signal at 40 Gb/s compared with differential quadrature phase shift keying (DQPSK) signal and amplitude shift keying (ASK) signal are investigated under different dispersion management. Simulation results show that CSRZFSK has the best nonlinear tolerance and longest transmission distance when compared with DQPSK and ASK signals. A 40 Gb/s CSRZFSK signal gives only a 0.1 dB sensitivity penalty while DQPSK and ASK give 0.6 and 0.7 dB, respectively.