Point-by-Point Dip Coated Long-Period Gratings in Microfibers

Author

Xuan-Yu Zhang ; Yong-Sen Yu ; Chao Chen ; Cong-Cong Zhu ; Rui Yang ; Zi-Jian Liu ; Ju-Fa Liang ; Qi-Dai Chen ; Hong-Bo Sun

Author_Institution

State Key Lab. on Integrated Optoelectron., Jilin Univ., Changchun, China

Volume

26

Issue

24

fYear

2014

fDate

Dec.15, 15 2014

Firstpage

2503

Lastpage

2506

Abstract

A point-by-point dip coating method has been proposed and demonstrated for fabricating long-period gratings (LPGs) in microfibers. Using a high precision 3D translation stage, the grating structure is formed by periodically immersing the microfiber into a miniature polydimethylsiloxane droplet suspended at the end-tip of the single mode fiber. A 10-period LPG with a grating period of about 143 μm fabricated in the 7.6 μm diameter microfiber demonstrates a resonant dip of 19 dB. Investigations of the strain and temperature response characteristics of the fabricated devices show that the devices have great potential for tunable filter and sensor applications with the merits of flexibility and compactness.

Keywords

antireflection coatings; diffraction gratings; dip coating; drops; fibre optic sensors; micro-optics; microfabrication; microsensors; optical fibre fabrication; optical fibre testing; suspensions; gain 19 dB; high precision 3D translation stage; long-period grating fabrication; microfibers; miniature polydimethylsiloxane droplet suspension; point-by-point dip coating method; sensor applications; single mode fiber; size 7.6 mum; strain response characteristics; temperature response characteristics; tunable filter applications; wavelength 143 mum; Ellipsoids; Fiber gratings; Gratings; Optical fiber sensors; Optical fibers; Strain; Temperature measurement; Optical fiber sensor; dip coating; long-period gratings; polydimethylsiloxane;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2359546

Filename

6905750