Title :
80~200 GHz erbium doped fibre laser using a rational harmonic mode-locking technique
Author :
Yoshida, E. ; Nakazawa, M.
Author_Institution :
NTT Access Network Syst. Lab., Ibaraki, Japan
fDate :
7/18/1996 12:00:00 AM
Abstract :
Pulse trains with repetition rates as high as 80~200 GHz were obtained at 1.55 μm, using rational harmonic mode-locking with an erbium doped fibre laser. A fundamental repetition frequency (fasc ) of 40 GHz was first generated by applying a 40 GHz modulation frequency to an LN intensity modulator in the fibre cavity, in which the longitudinal mode spacing (Δf) was 1.5 MHz. By rationally detuning the modulation frequency by Δf/n, the authors succeeded in obtaining a repetitive oscillation of (nfasc+Δf). The maximum frequency was 200 GHz, at which n corresponds to 5
Keywords :
erbium; fibre lasers; laser cavity resonators; laser mode locking; optical communication equipment; optical modulation; 1.55 micrometre; 80 to 200 GHz; Er3+-doped fibre laser; LN intensity modulator; fibre cavity; longitudinal mode spacing; modulation frequency; pulse train repetition rates; rational harmonic mode-locking technique; repetitive oscillation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960896
