Open AccessTm 3+ –Tb 3+ ‐doped tunable fibre ring laser for 1700 nm wavelength region
Author(s) -
Yamada M.,
Senda K.,
Tanaka T.,
Maeda Y.,
Aozasa S.,
Ono H.,
Ota K.,
Koyama O.,
Ono J.
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.2602
Subject(s) - materials science , ring laser , laser , lasing threshold , wavelength , optoelectronics , fiber laser , optics , band pass filter , doping , laser power scaling , tunable laser , physics
The first tunable fibre ring laser in the 1700 nm wavelength region has been developed. To achieve this fibre laser, a Tm 3+ –Tb 3+ ‐doped fibre is used as the active fibre, along with a tunable bandpass filter. A fibre ring laser that consisted of a 1.2/1.7 μm band wavelength division multiplexing coupler, a tunable bandpass filter, an active fibre and one 1.21 μm pump laser diode has been realised. A wide tuning wavelength band of 130.4 nm (from 1635.6 to 1766.0 nm) was achieved with a launched pump power of over ∼ 30 mW. The lasing threshold pump power at 1716 nm was ∼ 9 mW.