Title :
Ultrahigh-speed phaselocked-loop-type clock recovery circuit using a travelling-wave laser diode amplifier as a 50 GHz phase detector
Author :
Kawanishi, Satoki ; Takara, Hidehiko ; Saruwatari, M. ; Kitoh, Tsutomu
Author_Institution :
Transmission Syst. Lab., NTT, Kanagawa, Japan
Abstract :
Successful operation of a phaselocked loop is demonstrated using a travelling-wave laser-diode amplifier as a 50 GHz phase detector. Optical gain modulation in the laser diode amplifier and an all-optical clock multiplication technique using a silica-based guided-wave optical circuit are used to achieve the extremely highspeed operation. Also discussed is the possibility of more than 100 GHz operation.
Keywords :
clocks; optical communication equipment; optical modulation; phase-locked loops; semiconductor lasers; time division multiplexing; 50 GHz; all-optical clock multiplication technique; highspeed operation; laser diode amplifier; optical gain modulation; phase detector; phaselocked-loop-type clock recovery circuit; silica-based guided-wave optical circuit; travelling-wave laser diode amplifier;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19931140
