Stable single-frequency traveling-wave fiber loop laser with integral saturable-absorber-based tracking narrow-band filter

We have proposed and demonstrated a fiber ring laser with single polarization output using an intracavity 45º-tilted fiber grating (45º-TFG). The properties of the 45º-TFG have been investigated both theoretically and experimentally. The fiber ring laser incorporating the 45º-TFG has been systematically characterized, showing a significant improvement in polarization extinction ratio (PER) and achieving a PER of >30dB. The slope efficiencies of the ring laser with and without the 45º-TFG have been measured. This laser shows a very stable polarized output with PER variation less than 2dB for 5 hours at laboratory condition. In addition, we also demonstrated the tuneability of the laser.2009 Optical Society of America.

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“…By inserting a saturable absorber [12] or narrow filters [13], stable single polarization and single mode operation may be achieved.…”

Section: Discussionmentioning

confidence: 99%

Characterization of 45°-tilted fiber grating and its polarization function in fiber ring laser

et al. 2009

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“…It can also be used as a seed laser to create the excellent microwave signal or as an optical frequency standard to measure the unknown light frequency accurately [1][2][3][4]. Up to now, several techniques are reported to realize SLM fiber laser, such as saturable absorber [5][6][7], short cavity [1,4,[8][9], mode selection elements [10][11], passive multiple ring cavities [12], or self-injection feedback [13] and so on. The 3dB linewidth of the laser can be compressed to ~1-2 kHz by using the above mentioned methods.…”

Section: Introductionmentioning

confidence: 99%

Ultra-narrow linewidth fiber laser with self-injection feedback based on Rayleigh backscattering

2014

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Abstract-A single longitudinal mode fiber laser with ultra-narrow linewidth based on self-injection feedback by using the linewidth compress mechanism of Rayleigh backscattering (RBS) are proposed and demonstrated. Since the linewidth of RBS is narrower than that of the incident light in optical fibers and they have the same centre wavelength, the RBS can act as a mechanism to compress the linewidth of the incident light in fiber ring laser. In addition, more RBS signal could be collected to help further compress the laser linewidth besides the free spectral range is expanded when the self-injection feedback method is used. Our experimental results show that the side-mode suppression ratio of our laser is up to 75dB and the laser linewidth could be low to ~130Hz.Index Terms-fiber laser, single longitudinal mode, ultra-narrow linewidth, self-injection feedback, Rayleigh backscattering.

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“…Firstly, the strong homogeneous line broadening and cross-gain saturation in the EDF would lead to an unstable SLM dual-wavelength oscillation. A number of approaches have been proposed to overcome this difficulty such as the use of a hybrid gain medium [8], a passive multiple ring cavity [8], an external light injection [9], an unpumped EDF as a saturable absorber (SA) based narrow bandwidth filter [5,[10][11][12], etc. Secondly, an ultranarrow mode selecting mechanism should be utilized to eliminate the multi-longitudinal-mode oscillation and mode competition, caused by the long cavity length and hence the narrow longitudinal mode spacing.…”

Section: Introductionmentioning

confidence: 99%

A tunable and switchable single-longitudinal-mode dual-wavelength fiber laser with a simple linear cavity

He¹,

Xia²,

Liao³

et al. 2009

Opt. Express

122

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A simple linear cavity erbium-doped fiber laser based on a Fabry-Perot filter which consists of a pair of fiber Bragg gratings is proposed for tunable and switchable single-longitudinal-mode dualwavelength operation. The single-longitudinal-mode is obtained by the saturable absorption of an unpumed erbium-doped fiber together with a narrow-band fiber Bragg grating. Under the high pump power (>166mW) condition, the stable dual-wavelength oscillation with uniform amplitude can be realized by carefully adjusting the polarization controller in the cavity. Wavelength selection and switching are achieved by tuning the narrow-band fiber Bragg grating in the system. The spacing of the dualwavelength can be selected at 0.20nm (~ 25.62GHz), 0.22nm (~ 28.19GHz) and 0.54nm (~ 69.19GHz). ©2009 Optical Society of AmericaOCIS codes: (000.0000) General; (000.2700) General science. References and links1. N. J. C. Libatique, and R. K. Jain, "Precisely and rapidly wavelength-switchable narrow-linewidth 1.5µm laser source for wavelength division multiplexing applications," IEEE Photon. Technol. Lett. 11(12), 1584-1586 (1999). 2. Z. Chen, S. Ma, and N. K. Dutta, "Stable dual wavelength mode-locked Erbium-doped fiber ring laser," in Frontiers in Optics, OSA Technical Digest, paper

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Stable single-frequency traveling-wave fiber loop laser with integral saturable-absorber-based tracking narrow-band filter

Cited by 234 publications

References 9 publications

Characterization of 45°-tilted fiber grating and its polarization function in fiber ring laser

Characterization of 45°-tilted fiber grating and its polarization function in fiber ring laser

Ultra-narrow linewidth fiber laser with self-injection feedback based on Rayleigh backscattering

A tunable and switchable single-longitudinal-mode dual-wavelength fiber laser with a simple linear cavity

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