40 Gb/s NRZ-DQPSK Data All-Optical Wavelength Conversion Using Four Wave Mixing in a Bulk SOA

Differential quadrature phase shift keying (DQPSK) modulation has become particularly attractive in high-speed optical communications because of its resistance to fiber nonlinearities and its more efficient use of fiber bandwidth. Because of its wavelength conversion ability, semiconductor optical a...

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Veröffentlicht in:	IEEE photonics technology letters 2013-12, Vol.25 (24), p.2439-2441
Hauptverfasser:	Krzczanowicz, Lukasz, Connelly, Michael J.
Format:	Artikel
Sprache:	eng
Schlagworte:	all optical wavelength conversion DQPSK Four-wave mixing Optical fiber amplifiers Optical wavelength conversion phase modulation Probes Q-factor semiconductor optical amplifier Semiconductor optical amplifiers
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Zusammenfassung:	Differential quadrature phase shift keying (DQPSK) modulation has become particularly attractive in high-speed optical communications because of its resistance to fiber nonlinearities and its more efficient use of fiber bandwidth. Because of its wavelength conversion ability, semiconductor optical amplifier (SOA) four wave mixing effect has attracted much attention. We experimentally study the FWM wavelength conversion of 40 Gb/s (20 GBd) NRZ-DQPSK data. A bulk SOA with 21 dB gain and 10 dBm output saturation power is used. The Q-factors of the input and wavelength converted signal are measured. Some signal regeneration properties are shown. A Q-factor improvement up to 1.7 dB is observed.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2013.2288010