Compensation of beam walk-off in hollow metal waveguides

Autor:	M. Tan, Paul Kessler Rosenberg, Pavel Kornilovitch, Huei Pei Kuo, L. King, Sagi Mathai, Robert Newton Bicknell, Jong-Souk Yeo
Rok vydání:	2009
Předmět:	Optical efficiency Materials science Multicast business.industry Physics::Optics General Chemistry Waveguide (optics) Collimated light Optics Optical path Splitter Physics::Accelerator Physics General Materials Science Air gap (plumbing) business Beam (structure)
Zdroj:	Applied Physics A. 95:1073-1077
ISSN:	1432-0630 0947-8396
Popis:	Hollow metal waveguides feature well collimated beams and small losses across air gaps. This enables introduction of multiple optical beam splitters, or taps, along the waveguide to multicast signals from a source to multiple receivers. The splitters need to be of sufficient thickness to provide mechanical integrity and ease of handling. As a result, passing through the thickness leads to a beam walk-off. Walk-off dependence on the splitter thickness and its effect on the system optical efficiency are investigated. Two methods to compensate the walk-off are described: by offsetting the outgoing waveguide, and by introducing an additional symmetric optical element to shift the beam back to the original optical path. Both methods have been shown to effectively mitigate the walk-off effects.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ac5ff7a635f224cee941e80bd3345bdf https://doi.org/10.1007/s00339-009-5149-7 Zobrazit plný text záznamu Plný text ve formátu PDF