Title :
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
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;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.818625
