A Multi-Wavelength Brillouin Erbium Fiber Laser With Double Brillouin Frequency Spacing and Q-Switching Characteristics

Author

Sin Jin Tan ; Harun, Sulaiman Wadi ; Ali, Norsabilillah Mohd ; Ismail, Muhammad Ali ; Ahmad, Harith

Author_Institution

Dept. of Electr. Eng., Univ. of Malaya, Kuala Lumpur, Malaysia

Volume

49

Issue

7

fYear

2013

fDate

Jul-13

Firstpage

595

Lastpage

598

Abstract

A multiwavelength Brillouin Erbium fiber laser (MWBEFL) with double brillouin frequency spacing and Q-switching characteristics is demonstrated based on figure-of-eight configuration. The proposed MWBEFL uses a four-port circulator as a double-frequency shifter to isolate and circulate the odd-stokes signals through the Brillouin gain medium. Multiwavelength combs with 14 and 8 lasing lines and spacing of 0.16 nm are obtained by the use of 10-km long nonzero dispersion shifted fiber (NZDSF) and 2-km long dispersion compensating fiber (DCF), respectively. The Q-switched pulse trains are obtained in the proposed MWBEFL at 1480-nm pump power within 29 to 40 mW. It has repetition rates of 20.4 and 104.2 kHz with the corresponding pulse widths of 3.84 and 1.03 μs using the NZDSF and DCF, respectively, as the gain medium.

Keywords

Brillouin spectra; Q-switching; erbium; fibre lasers; laser beams; optical circulators; optical fibre dispersion; optical pumping; Brillouin gain medium; DCF; MWBEFL; NZDSF; Q-switched pulse trains; Q-switching; distance 10 km; distance 2 km; double Brillouin frequency spacing; double-frequency shifter; figure-of-eight configuration; four-port circulator; frequency 104.2 kHz; frequency 20.4 kHz; lasing lines; long dispersion compensating fiber; multiwavelength Brillouin erbium fiber laser; multiwavelength combs; nonzero dispersion shifted fiber; odd-stokes signals; power 29 mW to 40 mW; pulse widths; pump power; repetition rates; wavelength 1480 nm; Cavity resonators; Educational institutions; Gain; Laser excitation; Pump lasers; Scattering; Q-switching laser; brillouin erbium fiber laser; multi-wavelength brillouin laser; stimulated brillouin scattering (SBS);

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2013.2257692

Filename

6497461