Title :
Impact of laser frequency offset on DQPSK direct detection
Author :
Marazzi, Lucia ; Parolari, Paola ; Boffi, Pierpaolo ; Siano, Rocco ; Feroldi, Matteo ; Martinelli, Mario
Author_Institution :
CoreCom, Milano, Italy
Abstract :
Frequency-offset impact on DQPSK direct detection is experimentally addressed with free-running sources. The heterodyned-measured frequency offset is related both with DQPSK BER performance and power penalty. Polarization-dependent delay impairment is isolated as well.
Keywords :
differential phase shift keying; error statistics; heterodyne detection; optical transmitters; quadrature phase shift keying; DQPSK BER performance; DQPSK direct detection; free-running sources; heterodyned-measured frequency offset; laser frequency offset impact; polarization-dependent delay impairment isolation; power penalty; Bit error rate; Delay; Fiber lasers; Frequency; Histograms; Optical interferometry; Optical transmitters; Performance evaluation; Phase detection; Phase modulation;
Conference_Titel :
Quantum Electronics and Laser Science Conference, 2005. QELS '05
Print_ISBN :
1-55752-796-2
DOI :
10.1109/QELS.2005.1549275
