Q-switched brillouin fibre laser with multi-wall carbon nanotube saturable absorber

Zarei, A. and Tiu, Zian Cheak and Ahmad, F. and Ahmad, Harith and Harun, Sulaiman Wadi (2015) Q-switched brillouin fibre laser with multi-wall carbon nanotube saturable absorber. IET Optoelectronics, 9 (2). pp. 96-100. ISSN 1751-8768, DOI https://doi.org/10.1049/iet-opt.2014.0041.

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Official URL: https://doi.org/10.1049/iet-opt.2014.0041

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.

Item Type: Article
Funders: UNSPECIFIED
Additional Information: Sp. Iss. SI Cd9zq Times Cited:0 Cited References Count:18
Uncontrolled 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
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 23 Jul 2015 02:58
Last Modified: 02 Jan 2019 02:57
URI: http://eprints.um.edu.my/id/eprint/13787

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