Document Type
Article
Publication Date
4-1-2015
Abstract
A Q-switched Brillouin fibre laser (BFL) is successfully demonstrated using multi-walled carbon nanotubes (MWCNTs) embedded in polyvinyl alcohol (PVA) film as a passive saturable absorber (SA) for the first time. The SA is obtained by sandwiching the developed MWCNTs-PVA film between two FC/PC fibre connectors after depositing index-matching gel onto the fibre ends. The proposed Q-switched BFL incorporates a 5 km long dispersion shifted fibre in a ring cavity structure to generate Stokes shifted by 0.08 nm from the Brillouin pump wavelength. The BFL starts to generate a Q-switching pulse train at threshold pump power of 5 dBm. As the BP power is varied from 5.0 to 6.0 dBm, the repetition rate of the Q-switched BFL exhibits an increasing trend from 27.75 to 30.21 kHz, whereas the pulse width exhibits a decreasing trend from 3.25 mu s to 1.11 mu s. The maximum pulse energy of 0.13 nJ is obtained at maximum BP power of 6.0 dBm.
Keywords
Brillouin spectra, Carbon nanotubes, Fibre lasers, Laser cavity resonators, Nanophotonics, Optical fibre couplers, Optical fibre dispersion, Optical films, Optical polymers, Optical pulse generation, Optical pumping, Optical saturable absorption, Q-switching, Refractive index, Ring lasers
Divisions
fac_eng
Publication Title
IET Optoelectronics
Volume
9
Issue
2
Publisher
Institution of Engineering and Technology (IET)
Additional Information
Sp. Iss. SI Cd9zq Times Cited:0 Cited References Count:18