High speed evanescent waveguide photodetector with a 100 GHz bandwidth
Applied Physics Express, ISSN: 1882-0786, Vol: 17, Issue: 1
2024
- 3Citations
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Article Description
The upcoming beyond-5G and 6G ultra-high speed transmission networks have urged photonic transceivers to allow for higher bandwidth performance. In this work, an evanescent coupled high speed waveguide photodetector (PD) is fabricated and analyzed. Adopting a modified uni-traveling carrier structure, the PD exhibits a bandwidth of 100 GHz and a low dark current of 3 nA at −1.5 V. Numerical simulations show that the measured responsivity of 0.25 A W is worsened by the inaccurate cleaving length of the coupling waveguide, and could potentially reach 0.688 A W with anti-reflection film at the facet. The bandwidth is bound by high resistance and capacitance giving a transit-time limit as high as 310 GHz.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85183322911&origin=inward; http://dx.doi.org/10.35848/1882-0786/ad0e90; https://iopscience.iop.org/article/10.35848/1882-0786/ad0e90; https://dx.doi.org/10.35848/1882-0786/ad0e90; https://validate.perfdrive.com/9730847aceed30627ebd520e46ee70b2/?ssa=21dae85d-edf2-483a-ba21-168dfacf8a9b&ssb=93926214875&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.35848%2F1882-0786%2Fad0e90&ssi=3d999752-cnvj-4cd4-be16-08f0a75e541e&ssk=botmanager_support@radware.com&ssm=9255711713016514767426284566808883&ssn=fef2c5bc73afc42214b4af109e63eb008281464d7ce8-2748-40bf-a6e15e&sso=de8d39fb-a1453a396f87685ce5f35b4c2aa1ad73d285211cd4219bbb&ssp=94766636261730934828173100618879821&ssq=66169860937819908804716995636547298612233&ssr=NTIuMy4yMTcuMjU0&sst=com.plumanalytics&ssu=&ssv=&ssw=&ssx=eyJyZCI6ImlvcC5vcmciLCJfX3V6bWYiOiI3ZjYwMDBiNmZhZTk4ZS01MDUxLTRkYzItYmRlYi00Y2U4ZmE3Y2JkNGExNzMwOTE2OTk1NzcwOTIzODI2MTktZTY3NTdjZTEzMDRjMTk4ZTY3NDIiLCJ1em14IjoiN2Y5MDAwMTFlOGQyMDgtNzdjOC00YTVhLTk2MzItZjE4MDQxN2ZmMWE5Mi0xNzMwOTE2OTk1NzcwOTIzODI2MTktYmU1MWYzOGZlNzE0Yzg2NDY3NDIifQ==
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