Abstract
We propose a scheme for mitigating Rayleigh backscattering noise and demodulating
differential phase-shift keying (DPSK) signals in wavelength-division-multiplexed passive optical
networks (WDM-PONs) with injection-locked Fabry-Perot laser diodes (FP-LDs). Signal demodulation and
wavelength conversion are simultaneously realized on the basis of the frequency deviation and red
shift of longitude modes in the FP-LDs. Experimental results demonstrate that the demodulation and
wavelength conversion of 2.5-Gb/s DPSK signals are achieved. A power penalty of about 1.6 dB at a
bit error rate of 10-9 is measured after transmission over 25-km single mode fiber.
© 2013 Chinese Optics Letters
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