Receiver sensitivity improvement using polarization insensitive semiconductor optical amplifier

Surinder Singh; R. S. Kaler

doi:10.1117/12.631507

24 October 2005 Receiver sensitivity improvement using polarization insensitive semiconductor optical amplifier

Surinder Singh, R. S. Kaler

Proceedings Volume 6014, Active and Passive Optical Components for WDM Communications V; 601418 (2005) https://doi.org/10.1117/12.631507
Event: Optics East 2005, 2005, Boston, MA, United States

Abstract

In this paper, we investigate a SOA (semiconductor optical amplifier) preamplifier model by suitable choosing the material and device parameters for the SOA to reduce the amplified spontaneous emission (ASE) noise at low range of 22.3 μW with 0.1 mW input power for PIN receiver. Our proposed SOA optical preamplifier is found to be more relaxed from optical alignment & antireflection coating and eliminate the need of optical filter and give large tolerance of an input light wavelength more than 100 nm. Also we investigate the receiver sensitivity for different bit rate. We show that receiver sensitivity is -69.9 dBm at bit error rate (BER) of 4.6×10^-10 for 10 Gb/s and for the 40 Gb/s bit rate the improved receiver sensitivity is -19.2 dBm with PIN receiver. We also observe the sensitivity of -40.5 dBm at 40 Gb/s with DPSK (differential phase shift keying) receiver. Further the impact of amplified spontaneous emission power, gain variation with input light wavelength & optical gain for TE & TM modes with input power for PIN & DPSK receivers has been illustrated. We show that optical gain of SOA is polarization independent and remain constant 30.06 dB up to gain saturation. We also show that DPSK receiver suffer less from ASE noise. The variation of material loss, length & bias current for our SOA preamplifier to optimize the receiver sensitivity is further illustrated.

Citation Download Citation

Surinder Singh and R. S. Kaler "Receiver sensitivity improvement using polarization insensitive semiconductor optical amplifier", Proc. SPIE 6014, Active and Passive Optical Components for WDM Communications V, 601418 (24 October 2005); https://doi.org/10.1117/12.631507

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