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Proceedings Paper

Low-transmission-loss prism for optical switches designed by means of optical-power-evaluation computer program
Author(s): Takahiro Takigawa; Hideyuki Tanaka; Yasukazu Sano
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Paper Abstract

We have developed a low transmission loss prism for optical switches suitable for optical fiber systems which monitor and control factory equipment. We have realized the low transmission loss prism by using the geometrical property of ellipsoids and a newly developed optical power evaluation computer program which facilitates estimating the coupling efficiency between two optical fibers considering total reflection phenomena, numerical aperture and far field pattern of the optical fiber for an aspherical optical system. The transmission loss of the present ellipsoidal prism is 5 dB for the plastic fiber with the core diameter of 1 mm, and 5.8 dB for polymer clad fiber with core diameter of 0.2 mm. The present ellipsoidal prism improves transmission loss by 4 dB as compared with the conventional spherical prism for the optical fibers usually adopted to the optical fiber systems. The calculated loss and experimental loss agreed well. This agreement confirms the usefulness of our computer program.

Paper Details

Date Published: 15 September 1995
PDF: 11 pages
Proc. SPIE 2540, Current Developments in Optical Design and Engineering V, (15 September 1995); doi: 10.1117/12.219516
Show Author Affiliations
Takahiro Takigawa, Fuji Electric Corporate Research and Development, Ltd. (Japan)
Hideyuki Tanaka, Fuji Electric Corporate Research and Development, Ltd. (Japan)
Yasukazu Sano, Fuji Electric Corporate Research and Development, Ltd. (Japan)


Published in SPIE Proceedings Vol. 2540:
Current Developments in Optical Design and Engineering V
Robert E. Fischer; Warren J. Smith, Editor(s)

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