Generation of widely tunable picosecond pulses with large SMSR by externally injecting a gain-switched dual laser source
Clarke, Aisling M., Anandarajah, Prince M.ORCID: 0000-0001-7335-8044 and Barry, Liam P.ORCID: 0000-0001-8366-4790
(2004)
Generation of widely tunable picosecond pulses with large SMSR by externally injecting a gain-switched dual laser source.
IEEE Photonics Technology Letters, 16
(10).
pp. 2344-2346.
ISSN 1041-1135
The authors demonstrate a procedure of generating picosecond optical pulses that are tunable over a wide wavelength range (65 nm) and have very high spectral purity side-mode suppression ratio [(SMSR)>60 dB]. The large tuning range is obtained by employing external injection into a gain-switched source containing two Fabry-Pe/spl acute/rot lasers. The use of a widely tunable Bragg grating at the output improves the SMSR such that it exceeds 60 dB over the entire tuning range.