Abstract
A multiwavelength Brillouin/erbium fibre laser (BEFL) which operates in the long wavelength (L-band) region is demonstrated for potential applications in an L-band wavelength division multiplexing (WDM) communication system. The laser configuration consists of a long erbium-doped fibre to enable L-band amplification where two 3-dB couplers take a portion of the generated BEFL signal and re-inject it into the single mode fibre to seed a cascaded BEFL line in the same direction as the first BEFL line. A stable and strong laser comb of up to five lines with 10-GHz spacing has been obtained with a Brillouin pump (BP) of 9.2 mW and a 980 nm pump of 92 mW. The BEFL has shown a broad tuning range with a tuning characteristic for line #1 which is flat over a range greater than 9.9 nm.
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Harun, S.W., Tamchek, N., Abd-Rahman, M.K. et al. 10-GHz Optical Comb in L-Band Region With Brillouin/Erbium-Doped Fibre Laser. OPT REV 10, 133–135 (2003). https://doi.org/10.1007/s10043-003-0133-5
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DOI: https://doi.org/10.1007/s10043-003-0133-5