Record bandwidth, spectrally flat coupling with microbend gratings in dispersion-tailored fibers

Author

Ramachandran, Siddharth ; Yan, Man F. ; Monberg, Eric ; DiMarcello, Frank V. ; Wisk, Patrick ; Ghalmi, Samir

Author_Institution

OFS Labs., Murray Hill, NJ, USA

Volume

15

Issue

11

fYear

2003

Firstpage

1561

Lastpage

1563

Abstract

We demonstrate resonant grating couplers with the broadest bandwidth (565 nm) reported to date, using microbend gratings in dispersion-optimized few-mode fibers. Control of modal dispersion enables the demonstration of spectrally flat (< 0.25-dB ripple) coupling. This enables a compact (1 cm), broad-band (110 nm) variable optical attenuator, which is highly cost-effective, since device assembly simply involves pressing an as-drawn fiber between two corrugated blocks.

Keywords

bending; diffraction gratings; optical attenuators; optical fibre couplers; optical fibre dispersion; 1 cm; as-drawn fiber; broadest bandwidth; compact broad-band variable optical attenuator; cost-effective; device assembly; dispersion-optimized few-mode fibers; dispersion-tailored fibers; microbend gratings; modal dispersion control; pressing; record bandwidth; resonant grating couplers; spectrally flat coupling; two corrugated blocks; Bandwidth; Delay; Design engineering; Fiber gratings; Optical attenuators; Optical fiber couplers; Optical fiber devices; Optical fiber dispersion; Optical frequency conversion; Resonance;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2003.818625

Filename

1237588