Tunable Dual-Wavelength Thulium-Doped Fiber Laser by Employing a HB-FBG
A novel tunable dual-wavelength thulium-doped fiber laser is demonstrated experimentally. The wavelength-tuning by employing a high birefringence fiber Bragg grating is proposed in 2-μm band lasing for the first time. By adjusting the polarization controller, stable dual-wavelength operation at the...
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Veröffentlicht in: | IEEE photonics technology letters 2014-09, Vol.26 (18), p.1809-1812 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A novel tunable dual-wavelength thulium-doped fiber laser is demonstrated experimentally. The wavelength-tuning by employing a high birefringence fiber Bragg grating is proposed in 2-μm band lasing for the first time. By adjusting the polarization controller, stable dual-wavelength operation at the wavelengths of 1941.40 and 1942.21 nm is obtained. The optical signal-to-noise ratio is better than 48 dB. A 15.5% slope efficiency is achieved using a 90% output coupling ratio for laser extracting. The wavelength-tuning range in dual-wavelength operation is as wide as 6.93 nm. |
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ISSN: | 1041-1135 1941-0174 |
DOI: | 10.1109/LPT.2014.2336654 |