Silicon photonic filters with high rejection of both TE and TM modes for on-chip four wave mixing applications

Giuseppe Cantarella, Charalambos Klitis, Marc Sorel, Michael J. Strain

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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.
Original languageEnglish
Pages (from-to)19711-19720
Number of pages10
JournalOptics Express
Issue number17
Early online date7 Aug 2017
Publication statusPublished - 21 Aug 2017


  • integrated optical devices
  • wavelength conversion devices
  • photonic integrated circuits (PICs)

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