Title :
Side detection of strong radiation-mode out-coupling from blazed FBGs in single-mode and multimode fibers
Author :
Zhou, K. ; Simpson, A.G. ; Zhang, L. ; Bennion, I.
Author_Institution :
Photonics Res. Group, Aston Univ., Birmingham, UK
fDate :
7/1/2003 12:00:00 AM
Abstract :
We report on the effective side detection of radiation-mode out-coupling from blazed fiber Bragg gratings (BFBGs) fabricated in single-mode fiber (SMF) and multimode fiber (MMF). The far-field radiation power distribution from BFBGs have been measured achieving a high spatial-spectral resolution (0.17 mm/nm). We have also investigated comparatively the transmission-loss characteristics of BFBGs in both fiber types, fabricated using phase-mask and holographic inscription techniques. Our results reveal clearly that the radiation out-coupling from BFBGs is significantly stronger and spectrally more confined in MMF than in SMF.
Keywords :
Bragg gratings; holographic gratings; masks; optical fibre couplers; optical fibre fabrication; optical fibre losses; optical fibre testing; optical loss measurement; optical signal detection; blazed fiber Bragg gratings; effective side detection; far-field radiation power distribution; fiber types; high spatial-spectral resolution; holographic inscription techniques; multimode fibers; phase-mask; single-mode fibers; strong radiation-mode out-coupling; transmission-loss characteristics; Bragg gratings; Fiber gratings; Holography; Optical fiber devices; Optical fiber polarization; Optical fiber sensors; Power distribution; Power measurement; Radiation detectors; Wavelength division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2003.813568
