Transmission of 1.25-Gb/s PSK signal generated by using RSOA in 110-km coherent WDM PON

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We generate the phase-modulated signal by utilizing the chirp characteristics of the directly-modulated reflective semiconductor optical amplifier (RSOA) for the cost-effective realization of a long-reach wavelength-division-multiplexed passive optical network (WDM PON). We first investigate the relation between the amplitude and phase modulation indices in a directly-modulated RSOA and optimize these modulation indices to maximize the symbol distance on the constellation diagram. The results show that, by operating the RSOA under this optimum condition, we can achieve the excellent receiver sensitivity of -49.8 dBm at 1.25 Gb/s. We implement a long-reach WDM PON by using the phase-modulated RSOAs and self-homodyne receivers, and demonstrate the error-free transmission of 1.25-Gb/s signal over a 110-km long link without using any optical amplifiers. (C) 2010 Optical Society of America
Publisher
OPTICAL SOC AMER
Issue Date
2010-07
Language
English
Article Type
Article
Citation

OPTICS EXPRESS, v.18, no.14, pp.14871 - 14877

ISSN
1094-4087
DOI
10.1364/OE.18.014871
URI
http://hdl.handle.net/10203/94077
Appears in Collection
EE-Journal Papers(저널논문)
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