Title :
Zero frequency error locking of widely tunable lasers in high spectral efficiency systems using optical injection phase lock loops
Author :
Silva, C.F.C. ; Mikhailov, V. ; Bayvel, P. ; Seeds, A.J.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll. London, UK
Abstract :
A method of locking widely tunable lasers with zero frequency error relative to supplied optical and microwave references despite lasers temperature variations was demonstrated. Locking was maintained when changing laser submount temperature from 18°C to 23°C, while channel spacing variations were kept under 1 Hz. Using a two OIPLL system, 10 Gbit/s transmission at 18 GHz channel spacing was achieved.
Keywords :
diffraction gratings; distributed Bragg reflector lasers; laser tuning; measurement errors; optical phase locked loops; optical transmitters; semiconductor lasers; telecommunication channels; 10 Gbit/s; 18 to 23 degC; GHz channel spacing; Gbit/s transmission; high spectral efficiency systems; laser submount temperature; laser temperature variations; microwave references; optical injection phase lock loops; optical references; sampled grating DBR laser; widely tunable lasers; zero frequency error locking; Absorption; Channel spacing; Fiber lasers; Frequency; Laser stability; Masers; Optical filters; Petroleum; Temperature control; Tunable circuits and devices;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036542
