Novel Raman Fiber Lasers Emitting in the U-Band With Combined Volume Bragg Gratings

Author

Weichao Yao ; Jun Liu ; Nanyi Chen ; Jianing Zhang ; Yongguang Zhao ; Deyuan Shen

Author_Institution

Key Lab. of Adv. Laser Mater. & Devices, Jiangsu Normal Univ., Xuzhou, China

Volume

6

Issue

6

fYear

2014

fDate

Dec. 2014

Firstpage

1

Lastpage

8

Abstract

Narrow linewidth and widely tunable high-power Raman fiber lasers emitting in the U-band wavelength were demonstrated based on combinations of volume Bragg gratings with different center wavelengths. The narrowed linewidth was 65 pm at a center wavelength of 1657.86 nm with a maximum output power of 8.3 W, corresponding to a slope efficiency of 55.6%. For the tunable Raman fiber laser, continuously tunable dual-wavelength emission was obtained in a wide band (1621.3-1683.5 nm) with a wavelength difference over 60 nm (0.7-62.2 nm). The maximum output power was 11 W, corresponding to a slope efficiency of 76.6%.

Keywords

Bragg gratings; Raman lasers; fibre lasers; laser tuning; spectral line narrowing; Raman fiber lasers; U-band wavelength; dual-wavelength emission; efficiency 55.6 percent; efficiency 76.6 percent; laser tuning; linewidth narrowing; maximum output power; power 11 W; power 8.3 W; slope efficiency; volume Bragg gratings; wavelength 1621.3 nm to 1683.5 nm; wavelength 1657.86 nm; Bragg gratings; Fiber lasers; Optical fiber amplifiers; Optical fiber communication; Optical fiber sensors; Pump lasers; Raman fiber laser; dual-wavelength; narrow linewidth; volume Bragg gratings;

fLanguage

English

Journal_Title

Photonics Journal, IEEE

Publisher

ieee

ISSN

1943-0655

Type

jour

DOI

10.1109/JPHOT.2014.2374609

Filename

6967742