Title :
Traveling-wave photodetectors for high-power, large-bandwidth applications
Author :
Hietala, Vincent M. ; Vawter, G. Allen ; Brennan, T.M. ; Hammons, B.E.
Author_Institution :
Sandia Nat. Labs., Albuquerque, NM, USA
fDate :
9/1/1995 12:00:00 AM
Abstract :
The traveling-wave photodetectors (TWPD) discussed here offer theoretical quantum efficiencies approaching 100% while maintaining a very large electrical bandwidth. Additionally, they are capable of dissipating the high-power levels required for large dynamic range applications. In this paper, the power dissipation limit of the TWPD is explored. A small-signal steady-state model is developed that includes the effects of electrical propagation losses along the detector. Fabrication details are presented and experimental data shows a 3×1250 μm2 detector with a 4.8-GHz bandwidth
Keywords :
optical communication equipment; optical waveguides; photodetectors; 4.8 GHz; electrical bandwidth; electrical propagation losses; large dynamic range applications; large-bandwidth applications; power dissipation limit; quantum efficiencies; small-signal steady-state model; traveling-wave photodetectors; waveguide photodetectors; Bandwidth; Detectors; Dynamic range; Electrodes; Electromagnetic wave absorption; Optical device fabrication; Optical waveguides; P-i-n diodes; Photodetectors; Power dissipation;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
