The optical crossbar switch for signal routeing on board communication satellites
| Autor: | C. Stace, G. C. Baister, Henry White, P. V. Gatenby, N. Aldridge |
|---|---|
| Rok vydání: | 1994 |
| Předmět: |
Engineering
Spatial light modulator Computer Networks and Communications business.industry Electrical engineering Aerospace Engineering Optical switch Computer Science::Hardware Architecture Optical modulator Electronic engineering Baseband Insertion loss Crossover switch Crossbar switch business Free-space optical communication |
| Zdroj: | International Journal of Satellite Communications. 12:135-145 |
| ISSN: | 1099-1247 0737-2884 |
| DOI: | 10.1002/sat.4600120202 |
| Popis: | A switch matrix operating on baseband or microwave signals is a critical element of communications satellites employing multiple beam antennas and on-board switching. Optical switching by spatial light modulators (SLMs) offers a means of implementing large and highly flexible switch arrays capable of routeing signals at baseband or microwave frequencies. This approach offers potential mass, power and size advantages compared to alternative technologies. The paper reviews the essential features of optical crossbar switch architectures based on SLMs and discusses options for the lasers, SLMs, interface optics and photodetectors. Proof-of-concept demonstrators for optical crossbar switches operating on both baseband and microwave signals are described. Finally, an outline design for a compact switch module is described and the critical component developments needed to realize this are identified. |
| Databáze: | OpenAIRE |
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