Full L-band coverage of multiwavelength erbium-doped fiber laser
| Autor: | Hermann Lin, Yu-Syuan Huang, Yuh-Fung Huang |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
L band
Materials science business.industry Astrophysics::High Energy Astrophysical Phenomena Bandwidth (signal processing) Physics::Optics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Interferometry Optics Wavelength-division multiplexing Fiber laser Electrical and Electronic Engineering Physical and Theoretical Chemistry Comb filter business Lasing threshold Free spectral range |
| Zdroj: | Optics Communications. 284:5357-5360 |
| ISSN: | 0030-4018 |
| DOI: | 10.1016/j.optcom.2011.07.064 |
| Popis: | We propose and experimentally demonstrate a dual-pass unbalanced in-line Sagnac interferometer as a novel comb filter for implements in erbium-doped fiber lasers to obtain wide wavebands of multiwavelength radiations with enhancements of signal-to-noise ratios (SNRs). The hybrid combinations of the comb filter with the two schemes of nonlinear polarization rotation and intensity dependent loss have successfully not only enlarged the lasing bandwidth up to 47 nm but also enhanced the SNR up to 40 dB. The simultaneous lasing-wavelengths of 117 channels are also obtained. The multiwavelength lasing spectra with free spectral range of 0.4 nm covering the full L-band are useful for the applications of DWDM and WDM-PON systems. |
| Databáze: | OpenAIRE |
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