Multiwavelength Erbium-Doped Fiber Laser Employing A Dual-Pass Unbalanced In-Line Sagnac Interferometric Comb Filter

Hermann Lin; Yuh-Fung Huang; Yu-Syuan Huang

doi:10.1364/FILAS.2011.FThE14

Advances in Optical Materials
OSA Technical Digest (CD) (Optica Publishing Group, 2011),
paper FThE14
•https://doi.org/10.1364/FILAS.2011.FThE14

Multiwavelength Erbium-Doped Fiber Laser Employing A Dual-Pass Unbalanced In-Line Sagnac Interferometric Comb Filter

Hermann Lin, Yuh-Fung Huang, and Yu-Syuan Huang

Fiber Laser Applications 2011

Istanbul Turkey
16–17 February 2011
ISBN: 978-1-55752-904-6

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H. Lin, Y. Huang, and Y. Huang, "Multiwavelength Erbium-Doped Fiber Laser Employing A Dual-Pass Unbalanced In-Line Sagnac Interferometric Comb Filter," in Advances in Optical Materials, OSA Technical Digest (CD) (Optica Publishing Group, 2011), paper FThE14.

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Abstract

A dual-pass unbalanced in-line Sagnac interferometer (dual-pass UISI) proposed as a novel interferometric comb filter, which incorporating the two schemes of nonlinear polarization rotation and intensity dependent loss (NPR-IDL) has been successfully implemented in multiwavelenght erbium-doped fiber lasers (MWEDFLs). The signal to noise ratio (SNR) of lasing wavelengths can be measured to 60dB, which obtains 13dB enhancements more than the single-pass UISI. The flatness of lasing spectra is less than 2dB. These enhanced spectra of multiwavelength lasing outputs could have more amplified efficiencies by an external optics amplifier to amplify the peak powers additionally.

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