Title :
All-Optical Generation of Optical BPSK/QPSK Signals Interleaved With Reference Light
Author :
Okamura, Yasuhiro ; Hanawa, Masanori
Author_Institution :
Univ. of Yamanashi, Kofu, Japan
Abstract :
In this letter, all-optical generation of multilevel modulated signals interleaved with reference light is proposed and experimentally demonstrated. Four Gbaud BPSK and QPSK signals interleaved with reference light are generated using a based 22 optical switch, and the generated signals are demodulated by self-homodyne detection using an optical delay interferometer and a single photodetector. Moreover, we obtained negligible difference of error vector magnitude values between an external cavity laser with 100-kHz linewidth and a distributed-feedback laser with 6-MHz linewidth.
Keywords :
demodulation; homodyne detection; optical switches; phase shifting interferometry; photodetectors; quadrature phase shift keying; Gbaud BPSK signal; Gbaud QPSK signal; all-optical generation; demodulation; distributed-feedback laser; error vector magnitude values; external cavity laser; generated signals; multilevel modulated signals; optical BPSK signal; optical QPSK signal; optical delay interferometer; optical switch; reference light; self-homodyne detection; single photodetector; Optical interferometry; Optical modulation; Optical polarization; Optical receivers; Optical switches; Optical transmitters; Phase shift keying; All-optical interleaving; optical multilevel modulated signals; optical switch; self-homodyne detection;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2209867
