A Stable Narrow Line-Width Dual-Wavelength Fiber Laser Based on Nonlinear Polarization Rotation with a High Finesse Ring Filter

Xiu Feng Yang; Lei Peng; Zheng Rong Tong; Ye Cao; Feng Juan Dong

doi:10.4028/www.scientific.net/AMM.130-134.1876

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 130-134A Stable Narrow Line-Width Dual-Wavelength Fiber...

A Stable Narrow Line-Width Dual-Wavelength Fiber Laser Based on Nonlinear Polarization Rotation with a High Finesse Ring Filter

Abstract:

A stable narrow line-width dual-wavelength fiber laser based on nonlinear polarization rotation with a high finesse ring filter is proposed and demonstrated. A polarization-dependent-isolator (PDI) and a section of polarization maintaining fiber (PMF) form an equivalent birefringent filter. Moreover, a ring filter can produce high finesse due to the weak gain generated by the EDF. As a result, two stable wavelengths are generated which both have about 18dB extinction ratio, 16dB side mode suppression ratio (SMSR) and 0.16nm 3dB line-width. Plus, less than 2 pm of the wavelengths shift and smaller than 0.4 dB of the optical power fluctuation when the system is operating in room environment for a period of 40 minutes indicate that the ultra narrow line-width fiber laser is very stable.

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Periodical:

Applied Mechanics and Materials (Volumes 130-134)

Pages:

1876-1879

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.130-134.1876

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Online since:

October 2011

Authors:

Xiu Feng Yang, Lei Peng, Zheng Rong Tong, Ye Cao, Feng Juan Dong

Keywords:

Fiber Laser, High Finesse Ring Filter, Narrow Line-Width, Nonlinear Polarization Rotation

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References

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