Title

Theoretical Sensitivity Of Direct-Detection Multilevel Modulation Formats For High Spectral Efficiency Optical Communications

Keywords

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)

Abstract

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-DPolPSK) 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-DPolPSK. © 2006 IEEE.

Publication Date

7-1-2006

Publication Title

IEEE Journal on Selected Topics in Quantum Electronics

Volume

12

Issue

4

Number of Pages

571-580

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/JSTQE.2006.876183

Socpus ID

33747245707 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/33747245707

This document is currently not available here.

Share

COinS