Conference proceeding
Comparison of alternative modulation techniques for microwave optical links
Proceedings of SPIE, v 1371(1)
01 Feb 1991
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Directly- and externally-modulated fiber optic links have been compared in terms of gain, noise, and dynamic range. Data obtained indicate that direct modulation has gain and noise figures relatively insensitive to the optical bias level, provided the increased dynamic range at the higher laser bias level; excess optical noise caused by relaxation oscillation in the semiconductor laser limited the noise figure and dynamic range. For the externally-modulated link, gain and noise figures appeared to significantly depend on the optical input power and RF switching power, but the dynamic range is primarily determined by the optical input power. Photodetector linearity is a significant factor limiting the dynamic range of both of these links, especially at lower microwave frequencies.
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Details
- Title
- Comparison of alternative modulation techniques for microwave optical links
- Creators
- Dumrong Kasemset - General ElectricEdward I Ackerman - General ElectricStephen Wanuga - General ElectricPeter R Herczfeld - Drexel UniversityAfshin S Daryoush - Drexel University
- Publication Details
- Proceedings of SPIE, v 1371(1)
- Conference
- High-Frequency Analog Fiber Optic Systems
- Publisher
- Society of Photo-Optical Instrumentation Engineers (SPIE)
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Electrical and Computer Engineering; [Retired Faculty]
- Web of Science ID
- WOS:A1991BS85K00012
- Scopus ID
- 2-s2.0-0025898197
- Other Identifier
- 991019196664704721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Engineering, Electrical & Electronic
- Optics