Theoretical sensitivity of direct-detection multilevel modulation formats for high spectral efficiency optical communications
Abbreviated Journal Title
IEEE J. Sel. Top. Quantum Electron.
advanced modulation formats; amplitude-shift keying (ASK); differential; amplitude-phase-shift keying (DAPSK); differential detection; differential phase-shift keying (DPSK); differential; polarization-phase-shift keying (DPolPSK); optical fiber communications; phase modulation; polarization modulation; LIGHTWAVE SYSTEMS; RZ-DQPSK; TRANSMISSION; SIGNALS; GB/S; RECEIVERS; AMPLITUDE; DECISION; SCHEME; OD8PSK; Engineering, Electrical & Electronic; Optics; Physics, Applied
Sensitivities of several direct-detection multilevel modulation formats, including M-ary differential phase-shift keying (M-DPSK), M-ary differential amplitude-phase-shift keying (M-DAPSK), and M-ary differential polarization-phase-shift keying (M-DPoIPSK) are systematically calculated. The theory is based on a unified mathematical framework for direct-detection receivers using optical delay interferometers and balanced detectors. Results quantitatively elucidate the tradeoffs between these direct-detection multilevel modulation formats as well as the classic multilevel modulation format, M-ary amplitude-shift keying (MASK). Although the conventional bit error rate estimation method based on the eye Q-factor with Gaussian approximation is not accurate enough for DPSK and DQPSK, it is found to be reasonably accurate for M-DPSK with M > 8 and in M-DPoIPSK.
Ieee Journal of Selected Topics in Quantum Electronics
"Theoretical sensitivity of direct-detection multilevel modulation formats for high spectral efficiency optical communications" (2006). Faculty Bibliography 2000s. 6201.