Title :
Silicon Nitride-Based Compact Double-Ring Resonator Comb Filter With Flat-Top Response
Author :
Song, J.F. ; Fang, Q. ; Tao, S.H. ; Yu, M.B. ; Lo, G.Q. ; Kwong, D.L.
Author_Institution :
Inst. of Microelectron., A*STAR, Singapore
Abstract :
A novel double-ring resonator comb filter structure with flat-top response is proposed and fabricated. In this letter, we discuss its function theoretically and present results from devices fabricated on silicon nitride. The measured results show a flat-top response profile for the transverse-magnetic mode over C- and L-band, with the channel isolation ~15 dB, the free spectral range ~3 nm, and the total insertion loss ~ -7.5 dB. The footprint of the device is ~ 450 mum x 250 mum.
Keywords :
comb filters; integrated optics; micro-optics; optical filters; optical resonators; silicon compounds; C-band; L-band; SiN; compact double-ring resonator comb filter; flat-top response; integrated optics; transverse-magnetic mode; Comb filters; integrated optics; resonator filters;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2006992
