Wideband Microfiber Fabry–Pérot Filter and Its Application to Multiwavelength Fiber Ring Laser

Author

Weihua Jia ; Qizhen Sun ; Xiaohui Sun ; Jianghai Wo ; Zhilin Xu ; Deming Liu ; Shum, Perry Ping

Author_Institution

Nat. Eng. Lab. for Next Generation Internet Access Syst., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

26

Issue

10

fYear

2014

fDate

15-May-14

Firstpage

961

Lastpage

964

Abstract

A microfiber Fabry-Pérot (MFP) filter consisting of two microfiber Sagnac loop mirrors as the reflectors and a section of microfiber as the cavity is proposed and fabricated. Owing to the high coupling efficiency induced by the large evanescent field of the microfiber, a broadband comb spectrum with high extinction ratio and flat amplitude can be obtained. The MFP with the extinction ratio of 15 dB as well as the free spectrum range of 0.18 nm is fabricated by bending and twisting a microfiber tapered from a single mode fiber. Consequently, the MFP is applied to an erbium-doped fiber ring laser as the wavelength filter. Assisted by a section of highly nonlinear fiber to suppress the mode competition, 42-wavelength lasing oscillations are achieved at room temperature.

Keywords

Fabry-Perot resonators; erbium; extinction coefficients; fibre lasers; laser cavity resonators; micro-optics; mirrors; optical fibre fabrication; optical fibre filters; broadband comb spectrum; evanescent field; extinction ratio; lasing oscillations; microfiber Sagnac loop mirrors; microfiber bending; microfiber cavity; microfiber twisting; mode competition; multiwavelength erbium-doped fiber ring laser; nonlinear fiber; optical fibre fabrication; reflectors; single mode fiber; temperature 293 K to 298 K; wideband microfiber Fabry-Perot filter; Erbium-doped fiber lasers; Optical fiber filters; Optical fibers; Optical resonators; Microfiber; multiwavelength laser; optical fiber laser; optical filter;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2308528

Filename

6748912