Conference proceeding
Modeling of a high sensitivity heterostructure varactor with optical modulation capability
2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, pp 454-457
Oct 2007
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
We have previously developed an optically modulated high sensitivity heterostructure varactor whose C max /C min middot ratio of up to 113, and sensitivity of up to 35 are among the highest reported in the literature. These figures of merit indicate that this device is a good candidate for a number of applications including high order frequency multipliers. The device consists of a p-type delta modulation-doped heterostructure of AlGaAs/GaAs with Al 0.9 Ga 0.1 As/Al 0.24 Ga 0.76 As Distributed Bragg Reflectors (DBR) at the bottom producing a resonant cavity enhanced photodetector structure. As such the device has a dual role of being a sensitive photodetector and a Varactor. In fact, the response shows that the varactor characteristics can be optically modulated and depend on the intensity of the incident optical radiation. In this paper we present a lumped parameter model that captures the physics of the observed behavior. Validity of the model is verified by its correspondence with experimental results as well simulation of the physical structure.
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Details
- Title
- Modeling of a high sensitivity heterostructure varactor with optical modulation capability
- Creators
- X Zhao - Drexel UniversityA Cola - INFN Sezione di LecceF Quaranta - INFN Sezione di LecceA Persano - INFN Sezione di LecceE Gallo - Drexel UniversityJ.E Spanier - Drexel UniversityB Nabet - Drexel UniversityIEEE
- Publication Details
- 2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference, pp 454-457
- Conference
- 2007 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference
- Publisher
- IEEE
- Number of pages
- 1
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Electrical and Computer Engineering; Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000256075300103
- Scopus ID
- 2-s2.0-50449099560
- Other Identifier
- 991019168327404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Engineering, Electrical & Electronic
- Optics
- Physics, Applied