Title :
Microring-Based Resonant Cavity Waveguide Photodetectors for WDM Optical Systems
Author :
Abaeiani, Gholamreza ; Ahmadi, Vahid ; Saghafi, Kamyar
Author_Institution :
Tarbiat Modares Univ., Tehran
Abstract :
Analytical models for bandwidth and bandwidth-efficiency product (BEP) of microring waveguide photodetectors (MRWPDs) are presented. In addition to carrier transport and charging processes, the photon lifetime effect is included in the bandwidth model. This effect is characterized by the ODB of microring resonators. It is shown that the short cavities and partially overcoupled structures are suitable for very high speed photodetection. Meanwhile, photon lifetime can be set to obtain terahertz selective photodetectors. Also, a novel CMOS compatible silicon MRWPD is introduced and its high speed performance is investigated. It is shown this photodetector can provide BEP in order of several tens gigahertz even with very low absorption and low volume (about 2 mum3) active regions.
Keywords :
CMOS digital integrated circuits; cavity resonators; elemental semiconductors; high-speed optical techniques; integrated optics; micro-optics; microcavities; optical communication equipment; optical resonators; optical waveguides; photodetectors; silicon; wavelength division multiplexing; CMOS compatible silicon photodetectors; Si; WDM optical systems; bandwidth model; bandwidth-efficiency product; carrier transport; high speed photodetection; microring resonators; microring waveguide photodetectors; partially overcoupled structures; photon lifetime effect; resonant cavity waveguide; terahertz selective photodetectors; Analytical models; Bandwidth; High speed optical techniques; Optical resonators; Optical waveguides; Photodetectors; Resonance; Semiconductor device modeling; Silicon; Wavelength division multiplexing; bandwidth; integrated optics; microring resonators; optical waveguide; photodetectors; resonant-cavity-enhanced (RCE);
Conference_Titel :
Transparent Optical Networks, 2007. ICTON '07. 9th International Conference on
Conference_Location :
Rome
Print_ISBN :
1-4244-1249-8
Electronic_ISBN :
1-4244-1249-8
DOI :
10.1109/ICTON.2007.4296373
