Title :
Efficient fibre grating transmission filters
Author :
Sugden, K. ; Zhang, L. ; Bennion, I. ; Town, G.
Author_Institution :
Aston Univ., Birmingham, UK
Abstract :
Linear Bragg grating resonators have recently been attracting much attention as the search for fibre compatible transmission filters continues. However, these structures are limited to applications that require only narrow stopbands. There remains applications that would benefit from the availability of broader bandwidth filters; either multi-passband or single passband. With that in mind an investigation into the feasibility of fabricating chirped Bragg grating resonators ensued. Two types of chirped resonator structures have been considered: Fabry-Perot and Moire gratings. The Fabry-Perot resonators comprise of two chirped gratings displaced by some distance along the length of the fibre. The Moire gratings comprise again of two chirped gratings but where the gratings are written directly on top of each other in the fibre one grating is shifted slightly in wavelength
Keywords :
Fabry-Perot resonators; band-pass filters; diffraction gratings; optical fibre filters; optical resonators; Fabry-Perot gratings; Moire gratings; broader bandwidth filters; chirped Bragg grating resonators; chirped resonator structures; fibre compatible transmission filters; fibre grating transmission filters; linear Bragg grating resonators; multi-passband filters; narrow stopbands; single passband filters;
Conference_Titel :
Optical Fibre Gratings and Their Applications, IEE Colloquium on
Conference_Location :
London
DOI :
10.1049/ic:19950086