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Proceedings Paper

What Kind of Optical Fiber for Long-Distance Transmission?
Author(s): E. A.J. Marcatili
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Paper Abstract

A comparison is made between clad fibers and lens-like guides with parabolic index profiles, from several points of view: delay distortion, beam capacity per unit cross section, ability to negotiate bends, and deterioration of transmission due to imperfections. Parabolic index profile guides and single mode fibers with any profile (approximately rectangular, parabolic, etc.) are equally promising and attractive for long-distance optical trans-mission from several points of view, namely, capacity per unit cross section, delay distortion, and ability to negotiate bends. Nevertheless, their tolerance of imperfections is markedly different. Though insensitive to diameter changes, the multimode parabolic index profile guide is quite sensitive to systematic or random departure of refractive index profile from ideal. On the other hand, single mode guides are sensitive to random changes of both the index profile and the guide width. Both of them produce scattering loss.

Paper Details

Date Published: 1 June 1970
PDF: 16 pages
Proc. SPIE 0021, Fiber Optics II: Applications and Technology, (1 June 1970); doi: 10.1117/12.953417
Show Author Affiliations
E. A.J. Marcatili, Bell Telephone Laboratories, Incorporated (United States)

Published in SPIE Proceedings Vol. 0021:
Fiber Optics II: Applications and Technology

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