Title :
Stable Costas loop homodyne detection for 20-Gbit/s QPSK signal fiber transmission
Author :
Mizutori, Akira ; Set, Sze Y. ; Shirazawa, Futoshi ; Koga, Masafumi
Author_Institution :
Oita Univ., Oita, Japan
Abstract :
An experiment confirms stable homodyne detection of a fiber transmitted 20-Gbit/s QPSK signal by a decision-directed Costas loop circuit. Our low phase noise PLL is shown to compensate external cavity laser diode FM response and achieve high sensitivity homodyne detection of the QPSK signal.
Keywords :
homodyne detection; optical fibre communication; optical modulation; optical receivers; optical signal detection; phase locked loops; quadrature phase shift keying; FM response; PLL; QPSK signal; bit rate 20 Gbit/s; decision-directed Costas loop circuit; external cavity laser diode; low phase noise; signal fiber transmission; stable Costas loop homodyne detection;
Conference_Titel :
Optical Communication (ECOC 2013), 39th European Conference and Exhibition on
Conference_Location :
London
Electronic_ISBN :
978-1-84919-759-5
DOI :
10.1049/cp.2013.1308
