Open AccessSilicon photonic filters with high rejection of both TE and TM modes for on-chip four wave mixing applications
Author(s) -
Giuseppe Cantarella,
Charalambos Klitis,
Marc Sorel,
Michael J. Strain
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.019711
Subject(s) - optics , resonator , filter (signal processing) , extinction ratio , four wave mixing , optical filter , photonics , wavelength , photonic integrated circuit , mixing (physics) , materials science , optoelectronics , physics , nonlinear optics , computer science , laser , quantum mechanics , computer vision
Wavelength selective filters represent one of the key elements for photonic integrated circuits (PIC) and many of their applications in linear and non-linear optics. In devices optimised for single polarisation operation, cross-polarisation scattering can significantly limit the achievable filter rejection. An on-chip filter consisting of elements to filter both TE and TM polarisations is demonstrated, based on a cascaded ring resonator geometry, which exhibits a high total optical rejection of over 60 dB. Monolithic integration of a cascaded ring filter with a four-wave mixing micro-ring device is also experimentally demonstrated with a FWM efficiency of -22dB and pump filter extinction of 62dB.