Title :
Wavelength-tunable single-frequency and single-polarisation Er-doped fibre ring-laser with 1.4 kHz linewidth
Author :
Iwatsuki, Katsumi ; Okamura, Hiroyuki ; Saruwatari, M.
Author_Institution :
NTT Transmission Syst. Lab., Kanagawa, Japan
Abstract :
A narrow linewidth of 1.4 kHz with single frequency operation is demonstrated in an Er-doped fibre ring-laser. A stable lasing spectrum can be achieved using a single-polarisation fibre-cavity. An optical bandpass filter incorporated in the ring-cavity makes the lasing wavelength tunable, and a 2.8 nm tuning range is demonstrated.
Keywords :
erbium; fibre lasers; laser cavity resonators; laser frequency stability; laser tuning; light polarisation; spectral line breadth; 1.5493 to 1.5521 micron; Er-doped fibre ring-laser; narrow linewidth; optical bandpass filter; ring-cavity; single frequency operation; single-polarisation fibre-cavity; solid lasers; stable lasing spectrum; wavelength tunable;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19901312
