Abstract
Recent progress of low-loss silicon nitride waveguide in polymer is presented. The fabrication technology requires only low temperature (<200°C) processes and standard photolithography. These waveguides feature a large geometric aspect ratio, resulting in a strong waveguide birefringence. For the TM mode an average propagation loss of ~ 0.72 dB/cm is measured, while for the TE mode the value is ~ 0.96 dB/cm. Also demonstrated are uniform Bragg-grating filters and sampled grating filters. Since the waveguide modes are weakly guided and the majority of light field distributes in the polymer cladding, various optical properties of the polymer materials can be exploited. A thermally tunable waveguide Bragg grating is thus demonstrated, with wavelength tuning range above 57 nm for the TM mode and 49 nm for the TE mode, at a tuning power of ~ 220 mW.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
