Journal
Publisher
IEEE
DOI: 10.1109/CLEO/Europe-EQEC52157.2021.9542787
Keywords
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By utilizing waveguide photodiodes on a silicon nitride photonic platform, this study has successfully achieved high responsivity and high-speed detectors, with excellent properties such as low-loss waveguides and immunity to two-foton absorption at high optical power.
High-speed photodiodes often compromise responsivity in exchange for a reduced footprint. However, using waveguide photodiodes circumvents this limitation [1] . We combine uni-travelling-carrier photodiodes (UTC PDs) on a silicon nitride (SiN) photonic platform to achieve both high responsivity and high speed detectors. The SiN-platform has excellent properties such as low-loss waveguides and does not suffer from two-foton absorption at high optical power. A high responsivity is obtained through evanescent coupling of waveguide UTC photodiodes to SiN waveguides while still maintaining a small footprint.
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