Frequency response modelling and optimization of long wavelength RCE photodiodes

Issue title: Proceedings from the 17th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2015)

Guest editors: Fumio Kojima, Futoshi Kobayashi and Hiroyuki Nakamoto

Article type: Research Article

Authors: Pereira, Jorge^{a; *} | Matos, Verónica^b

Affiliations: [a] Instituto de Telecomunicações, DEEC/Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal | [b] DEEC/Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal

Correspondence: [*] Corresponding author: Jorge Pereira, Instituto de Telecomunicações, DEEC/Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal. E-mail:torres.pereira@lx.it.pt

Abstract: Resonant Cavity Enhanced (RCE) photodiodes may have advantages over the conventional p-i-n photodiodes due to an enhancement of the quantum efficiency obtained from the constructive interference of the light waves that are made to oscillate in a cavity. In this paper a novel RCE structure, with applications in long wavelength optical communication systems, is proposed and its frequency response is investigated and compared to that obtained for conventional p-i-n devices. An optimization procedure is implemented and the results show that these RCE photodetectors may have bandwidths larger than 80 GHz and a bandwidth-quantum efficiency product above 80%.

Keywords: RCE photodiodes, frequency response, modelling, p-i-n photodiode

DOI: 10.3233/JAE-162075

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 52, no. 1-2, pp. 641-648, 2016