Theoretical sensitivity of direct-detection multilevel modulation formats for high spectral efficiency optical communications

被引：23
作者：
Han, Yan [1 ]
Li, Guifang
机构：
[1] BAE Syst, Washington, DC 20037 USA
[2] Univ Cent Florida, Coll Opt & Photon, Orlando, FL 32816 USA
来源：
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS | 2006年 / 12卷 / 04期
基金：
美国国家科学基金会;
关键词：
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;
D O I：
10.1109/JSTQE.2006.876183
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
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.
引用
收藏
页码：571 / 580
页数：10
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