Ideal phase-locked-loop (PLL) operation of a 10 GHz erbium-doped fibre laser using regenerative modelocking as an optical voltage controlled oscillator

Author

Nakazawa, M. ; Yoshida, E. ; Tamura, K.

Author_Institution

Optical Soliton Commun. Res. Group, NTT Access Network Syst. Labs., Ibaraki, Japan

Volume

33

Issue

15

fYear

1997

fDate

7/17/1997 12:00:00 AM

Firstpage

1318

Lastpage

1320

Abstract

Ideal phase-locked-loop (PLL) operation of a 10 GHz erbium doped fibre laser has been achieved for the first time by using a voltage controlled regenerative modelocking technique. The repetition rate of the regeneratively modelocked fibre laser in a free running condition can be continuously varied by changing the voltage supplied to the PZT to change the fibre cavity length. PLL operation is achieved by feeding back a phase sensitive error signal to the PZT. This signal is obtained by mixing a laser clock signal with a synthesizer signal. The external signal tracking range is 40 kHz

Keywords

erbium; fibre lasers; laser beam applications; laser cavity resonators; laser mode locking; optical communication equipment; optical phase locked loops; voltage-controlled oscillators; 10 GHz; Er-doped fibre laser; PZT; PbZrO3TiO3; fibre cavity length; free running condition; ideal PLL operation; laser clock signal; modelocked fibre laser; optical VCO; optical voltage controlled oscillator; phase sensitive error signal; phase-locked-loop; regenerative modelocking; repetition rate; synthesizer signal;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:19970902

Filename

606079