Title :
Optical 8-DPSK and receiver with direct detection and multilevel electrical signals
Author_Institution :
Inst. of Telecommun., Stuttgart Univ., Germany
Abstract :
This paper presents a differential 8-level phase-shift keying (8-DPSK) modulation format with a simple new receiver for transmission of 3 bit/symbol. The receiver with direct detection is based on a differential quadrature phase-shift keying (DQPSK) receiver with binary decision devices and a combinational network for estimating the transmitted bit sequences from the detected multilevel electrical signals. The 8-DPSK transmitter is based on a differential quadrature phase-shift keying (DQPSK) transmitter with an additional phase modulator. Spectral properties of 8-DPSK and chromatic dispersion tolerance are investigated.
Keywords :
differential phase shift keying; optical fibre communication; optical fibre dispersion; optical modulation; optical receivers; optical transmitters; quadrature phase shift keying; signal detection; binary decision devices; chromatic dispersion tolerance; combinational network; detected multilevel electrical signal; differential 8-level phase-shift keying modulation format; differential quadrature phase-shift keying receiver; multilevel electrical signals; optical 8-DPSK; transmitted bit sequences; Differential quadrature phase shift keying; Fiber nonlinear optics; Nonlinear optics; Optical filters; Optical modulation; Optical receivers; Optical signal processing; Optical transmitters; Phase detection; Phase shift keying;
Conference_Titel :
Advanced Modulation Formats, 2004 IEEE/LEOS Workshop on
Print_ISBN :
0-7803-8425-3
DOI :
10.1109/ADMF.2004.1321713
