A dual-wavelength erbium-doped fiber laser based on fiber grating pair

Hongwei Sun; Tianshu Wang; Qingsong Jia; Peng Zhang; Huilin Jiang

doi:10.1117/12.2072252

9 December 2014 A dual-wavelength erbium-doped fiber laser based on fiber grating pair

Hongwei Sun, Tianshu Wang, Qingsong Jia, Peng Zhang, Huilin Jiang

Proceedings Volume 9294, International Symposium on Optoelectronic Technology and Application 2014: Development and Application of High Power Lasers; 929407 (2014) https://doi.org/10.1117/12.2072252
Event: International Symposium on Optoelectronic Technology and Application 2014, 2014, Beijing, China

Abstract

A dual-wavelength linear cavity erbium-doped fiber (EDF) laser based on a fiber grating pair is demonstrated experimentally. A circulator, a 980nm/1550nm wavelength division multiplexing (WDM) coupler, a 1×2 coupler, a polarization controller, a 6m long erbium-doped fiber and a fiber grating pair for wavelength interval of 0.3nm are included in the structure. A circulator connected at two ports as reflecting mirror structure. A 980nm pump source pump an erbium-doped fiber with a length of 6m consist of an erbium doped fiber amplifier. Through adjusting the state of the polarization controller, the transmission characteristic of cavity is changed. In both polarization and wavelength, the feedback from the fiber grating pair results in the laser operating on two longitudinal modes that are separated. The birefringence induced by the fiber grating pair is beneficial to diversify the polarization states of different wavelength in the erbium-doped fiber. So it is enhanced the polarization hole burning effect. This polarization hole burning effect greatly reduced the wavelength competition. Then, it was possible to achieve stable dual-wavelength. It turns out the structure generated the stable dual-wavelength with the 0.3nm wavelength interval and the output power is 0.13dBm in the end. The whole system have a simple and compact structure, it can work stably and laid a foundation for microwave/millimeter wave generator. It has a good application performance in the future for scientific research and daily life.

Citation Download Citation

Hongwei Sun, Tianshu Wang, Qingsong Jia, Peng Zhang, and Huilin Jiang "A dual-wavelength erbium-doped fiber laser based on fiber grating pair", Proc. SPIE 9294, International Symposium on Optoelectronic Technology and Application 2014: Development and Application of High Power Lasers, 929407 (9 December 2014); https://doi.org/10.1117/12.2072252

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KEYWORDS

Fiber lasers

Polarization

Hole burning spectroscopy

Structured optical fibers

Birefringence

Wavelength division multiplexing

Aerospace engineering

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