Low Loss Splicing Between Double-Clad Fiber and Photonic Crystal Fiber Using Graded Index Fiber Lens

Author

Deqin Ouyang ; Shuangchen Ruan ; Chunyu Guo ; Huifeng Wei

Author_Institution

Shenzhen Key Lab. of Laser Eng., Shenzhen Univ., Shenzhen, China

Volume

32

Issue

14

fYear

2014

fDate

July15, 15 2014

Firstpage

2524

Lastpage

2530

Abstract

A novel approach of splicing between photonic crystal fiber (PCF) and double-clad fiber is demonstrated with the utilization of graded index fiber (GIF) and coreless fiber as fiber lens. The light beam in large core double-clad fiber is first enlarged by coreless fiber and then focused by GIF to match the small core PCF to realize the low loss splicing. The splicing losses versus the length of GIF, coreless fiber as well as the air hole collapsed region were investigated theoretically and experimentally. Through tailoring the length of GIF and coreless fiber precisely, a splicing loss as low as 0.5 dB was finally achieved between double-clad fiber and PCF with the mode field diameters of 18.7 and 3.9 μm, respectively. To the best of our knowledge, this is the first time to achieve such a low splicing loss between double-clad fiber and PCF.

Keywords

gradient index optics; holey fibres; lenses; optical fibre cladding; optical fibre losses; photonic crystals; PCF; air hole collapsed region; coreless fiber; double-clad fiber; graded index fiber lens; light beam; low loss splicing; mode field diameters; photonic crystal fiber; size 18.7 mum; size 3.9 mum; Arc discharges; Fiber lasers; Lenses; Optical fiber cables; Optical fiber dispersion; Optical fibers; Splicing; Double-clad fiber; fiber optics; fiber splice; graded index fiber; photonic crystal fiber;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2326302

Filename

6819786