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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 27, Iss. 23 — Dec. 1, 1988
  • pp: 4837–4843

Insertion loss reduction between single-mode fibers and diffused channel waveguides

Jacques Albert and Gar Lam Yip  »View Author Affiliations


Applied Optics, Vol. 27, Issue 23, pp. 4837-4843 (1988)
http://dx.doi.org/10.1364/AO.27.004837


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Abstract

Methods of reducing the insertion loss between single-mode fibers and graded-index channel waveguides, and backdiffusion, are analyzed theoretically and compared. Mode mismatch and namely, annealing misalignment losses are calculated to determine the best method and the optimal conditions for their use. The main result of this paper is that, in the single-mode regime, there is no apparent advantage in using backdiffusion instead of the simpler annealing process, in contrast with the multimode case. In the coupling a numerical simulation of waveguide formation by potassium–sodium ion exchange in glass is loss calculation, used for illustration.

© 1988 Optical Society of America

History
Original Manuscript: May 11, 1988
Published: December 1, 1988

Citation
Jacques Albert and Gar Lam Yip, "Insertion loss reduction between single-mode fibers and diffused channel waveguides," Appl. Opt. 27, 4837-4843 (1988)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-27-23-4837


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References

  1. J. J. Veselka, G. A. Bogert, “Low-Insertion-Loss Channel Waveguides in LiNbO3 Fabricated by Proton Exchange,” Electron. Lett. 23, 265 (1987). [CrossRef]
  2. K. Komatsu, S. Yamazaki, M. Kondo, Y. Ohta, “Low-Loss Broad-Band LiNbO3 Guided-Wave Phase Modulators Using Titanium/Magnesium Double Diffusion Method,” IEEE/OSA J. Lightwave Technol. LT-5, 1239 (1987). [CrossRef]
  3. P. G. Suchoski, R. V. Ramaswamy, “Constant-Width Variable-Index Transition for Efficient Ti:LiNbO3 Waveguide–Fiber Coupling,” IEEE/OSA J. Lightwave Technol. LT-5, 1246 (1987). [CrossRef]
  4. J. Albert, G. L. Yip, “Wide Single-Mode Channels and Directional Coupler by Two-Step Ion-Exchange in Glass,” IEEE/OSA J. Lightwave Technol. LT-6, 552 (1988). [CrossRef]
  5. D. Marcuse, Light Transmission Optics (Van Nostrand Reinhold, New York, 1982).
  6. L. McCaughan, E. J. Murphy, “Influence of Temperature and Initial Titanium Dimensions on Fiber-Ti:LiNbO3 Waveguide Insertion Loss at λ = 1.3 μm,” IEEE J. Quantum Electron. QE-19, 131 (1983). [CrossRef]
  7. A. Mahapatra, J. M. Connors, “Thermal Tapering of Ion-Exchanged Channel Guides in Glass,” Opt. Lett. 13, 169 (1988). [CrossRef] [PubMed]

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