SNR improvement of DPSK signals in a semiconductor optical regenerative amplifier

Signal-to-noise ratio improvement using a semiconductor optical regenerative amplifier (SORA) is characterized. It is demonstrated that for a noise-degraded return-to-zero differential phase-shift keying signal at 10 Gb/s the Q factor at the SORA's output is improved relative to its input for b...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 18; no. 1; pp. 49 - 51
Main Authors Shin, M., Devgan, P.S., Grigoryan, V.S., Kumar, P.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2006
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Amplification
Amplifiers
Differential phase-shift keying (DPSK)
Differential quadrature phase shift keying
Noise level
Noise levels
Optical noise
optical regeneration
Phase noise
Q factor
Q factors
Regenerative
Repeaters
Semiconductor device noise
semiconductor optical amplifier (SOA)
Semiconductor optical amplifiers
Semiconductors
Signal to noise ratio
Spontaneous emission
Stimulated emission
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Summary:Signal-to-noise ratio improvement using a semiconductor optical regenerative amplifier (SORA) is characterized. It is demonstrated that for a noise-degraded return-to-zero differential phase-shift keying signal at 10 Gb/s the Q factor at the SORA's output is improved relative to its input for both the phase and amplitude noise cases. The Q-factor improvement is 1.6 dB in single-channel operation for the phase-noise only case and 0.55 dB for the amplified spontaneous emission noise-only case through the SORA.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2005.860075