Performance study of optical resonator‐based filter architectures. Issue 6 (26th June 2018)

• Record Type: Journal Article
• Authors: Addya, Subhankar; Dey, Sabitabrata; Mandal, Sanjoy
• Is Part Of: IET circuits, devices & systems. Volume 12:Issue 6(2018)
• Page Start: 802
• Page End: 809
• Publication Date: 2018-06-26
• Subjects: elemental semiconductors -- optical filters -- optical resonators -- silicon -- silicon-on-insulator -- silicon compounds -- integrated optics; delay line signal processing technique -- performance defining parameters -- optical resonator-based filter architectures -- optical ring resonator architectures -- triangular-shaped optical resonators -- constituent material -- silicon layer -- double-ring architectures -- silicon on insulator wafer -- Si substrate -- free spectral range -- racetrack-shaped optical resonators -- circular-shaped optical resonators -- group index -- z-domain -- Mason's gain formula -- Vernier principle -- frequency 25.2 THz -- SiO2-Si; Electronic circuits -- Periodicals; Electronic systems -- Periodicals; 621.381505
• DOI: 10.1049/iet-cds.2018.0087
• Languages: English
• ISSNs: 1751-858X

Abstract

Abstract : A comparative study on characteristics and performance of optical ring resonator architectures, i.e. circular, racetrack, and triangular‐shaped optical resonators, have been carried out here. Constituent material used for designing these resonators is an silicon on insulator wafer consisting of thin silicon (Si) layer on silica (SiO2 ) layer carried on a thick Si substrate having group index of 2.379. All the resonators are so designed that all provide equal free spectral range (FSR) of 25.2 THz. All these double‐ring architectures have been analysed using delay line signal processing technique in z ‐domain and Mason's gain formula. FSR expansion has been achieved employing the Vernier principle. Various performance defining parameters have been also investigated.