OSA's Digital Library

Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 64, Iss. 11 — Nov. 1, 1974
  • pp: 1415–1423

Partially cladded triangular-cored glass optical fibers and lasers

A. R. Tynes  »View Author Affiliations


JOSA, Vol. 64, Issue 11, pp. 1415-1423 (1974)
http://dx.doi.org/10.1364/JOSA.64.001415


View Full Text Article

Acrobat PDF (1954 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Optical fibers that possess the characteristics of both conventional cladded fibers and of a new type of fiber have been drawn and evaluated. The core has an equilateral triangular cross section with slightly bulging curved sides. The rounded vertices are in contact with the inside of the cladding tube of lower refractive index. Most of ther periphery of the core is surrounded by air. The cavity-like waveguide modes of this new type of fiber can be described as due to skew rays being reflected systematically from the glass-to-air interfaces as they propagate along the fiber. Near-field and far-field radiation patterns have been photographed and are presented. A new type of laser based on these cavity-like waveguide modes is proposed, in which the triangular core is made of a material (e.g., neodymium-doped glass, YAG, etc.) that can be optically pumped. The normal mode of operation of the laser consists of six diverging, spatially separated output beams; it can be optically pumped axially from both ends simultaneously, while being pumped from the sides.

© 1974 Optical Society of America

Citation
A. R. Tynes, "Partially cladded triangular-cored glass optical fibers and lasers," J. Opt. Soc. Am. 64, 1415-1423 (1974)
http://www.opticsinfobase.org/josa/abstract.cfm?URI=josa-64-11-1415


Sort:  Author  |  Journal  |  Reset

References

  1. T. Uchida, M. Furukawa, I. Kitano, K. Koizumi, and H. Matsumura, IEEE J. Quant. Electron. 5, 331 (1969).
  2. P. Kaiser, E. A. J. Marcatili, and S. E. Miller, Bell. Syst. Tech. J. 72, 265 (1973).
  3. U. S. Patent No. 3,712,705 issued to E. A. S. Marcatili on 23 January 1973. This patent describes a generalized polygonal-cored fiber as well as the equilaterial-triangular-cored fiber.
  4. A. D. Pearson and W. G. French, Bell Lab. Rec. 50, 102 (1972).
  5. R. B. Dyott, C. R. Day, and M. C. Brain, Electron. Lett. 9, 288 (1973).
  6. N. S. Kapany, Fiber Optics (Academic, New York, 1967), p. 9.
  7. For this purpose, Zeiss UD/20 or UD/40 objectives are convenient because a 3-mm-diam opaque mask can easily be attached to the lens surface closest to the object being viewed.
  8. The direction of rotation is arbitrary. What is clear is that the two sets of three modes rotate in opposite directions.
  9. S. D. Personick, Bell Syst. Tech. J. 50, 843 (1971).
  10. Hans Mueller, J. Am. Ceramic Soc. 21, 27 (1938).
  11. P. Kaiser, A. R. Tynes, H. W. Astle, A. D. Pearson, W. G. French, R. E. Jaeger, and A. H. Cherin, J. Opt. Soc. Am. 63, 1141 (1973).
  12. Losses expressed in dB/km can be converted to cm-1 by dividing by 4.34 × 105.
  13. Reference 6, p. 10. Equation (2.7) applies to meridional rays and is only approximately true for skew rays.
  14. J. B. Keller and S. J. Rubinow, Ann. Phys. 9, 24 (1960).
  15. E. A. J. Marcatili, Bell Syst. Tech. J. 48, 2071 (1969).
  16. J. E. Goell, Bell Syst. Tech. J. 48, 2133 (1969).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited