Study of a novel high-speed all-optical orthogonal modulation scheme based on frequency-shift keying and intensity-modulated labeling

Minghao Li; Nan Chi; Wei Hong; Wei Li; Hong Liu; Dexiu Huang

doi:10.1117/1.2977526

1 September 2008 Study of a novel high-speed all-optical orthogonal modulation scheme based on frequency-shift keying and intensity-modulated labeling

Minghao Li, Nan Chi, Wei Hong, Wei Li, Hong Liu, Dexiu Huang

Author Affiliations +

Optical Engineering, Vol. 47, Issue 9, 095002 (September 2008). https://doi.org/10.1117/1.2977526

Abstract

We propose and demonstrate a novel orthogonal optical labeling scheme based on 40-Gbit/s optical frequency-shift keying (FSK) payload and 2.5-Gbit/s intensity-modulated (IM) labeling. Using the technology of carrier-suppressed modulation and conversion of differential phase-shift keying to IM, only one light source is needed to generate the optical FSK signal. The system performance, including range of IM modulation depth, bit error ratio, and dispersion limitation, is carefully investigated by numerical simulation. With IM modulation depth of 0.4, the 40 Gbit/s FSK payload and 2.5-Gb/s IM label are transmitted over a 50-km standard single mode fiber (SMF) with 0.87 and 0.92 dB penalty and show immunity to input power range upto 11 and 15 dB, respectively. Optimal methods to improve the system performance are also proposed and discussed. After optimization, the IM modulation depth can be reduced to 0.2.

©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Minghao Li, Nan Chi, Wei Hong, Wei Li, Hong Liu, and Dexiu Huang "Study of a novel high-speed all-optical orthogonal modulation scheme based on frequency-shift keying and intensity-modulated labeling," Optical Engineering 47(9), 095002 (1 September 2008). https://doi.org/10.1117/1.2977526

Published: 1 September 2008

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KEYWORDS

Frequency shift keying

Modulation

Phase shift keying

Receivers

Single mode fibers

Modulators

Light sources

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