Abstract

A simple method for designing adiabatic transitions between straight and curved waveguides is presented. This method results in lower coupling from guided to radiating modes than conventional methods based on introducing an abrupt offset at the junction point. With the new adiabatic transition design, a decrease of 5 to 10 dB in the low-level radiating light cone is found compared with the traditional method.

© 2005 IEEE

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  5. M. Heinbach, M. Schienle, A. Schmid, B. Acklin and G. Müller, "Low-loss bent connections for optical switches", J. Lightw. Technol., vol. 15, no. 5, pp. 833-837, May 1997.
  6. D. Marcuse, Theory of Dielectric Optical Waveguides, New York: Academic, 1974.
  7. A. W. Snyder and J. D. Love, Optical Waveguide Theory, London: U.K.: Chapman & Hall, 1984.
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  9. D. Derickson, Ed. Fiber Optic Test and Measurement, Englewood Cliffs, NJ: Prentice-Hall, 1998.

Other (9)

V. Subramaniam, G. N. De Brabander, D. H. Naghski and J. T. Boyd, "Measurement of mode field profiles and bending and tranistion losses in curved optical channel waveguides", J. Lightw. Technol., vol. 15, no. 6, pp. 990-997, Jun. 1997.

T. Kitoh, N. Takato, M. Yasu and M. Kawachi, "Bending loss reduction in silica-based waveguides using lateral offsets", J. Lightw. Technol., vol. 13, no. 4, pp. 555-562, Apr. 1995.

W. Minford, S. Korotky and R. Alferness, "Low-loss Ti:LiNbO3 waveguide bends at lambda=1.3 µm", IEEE J. Quantum Electron., vol. 18, no. 10, pp. 1802-1806, Oct. 1982.

F. Ladoucer and P. Labeye, "A new general approach to optical waveguide path design", J. Lightw. Technol., vol. 13, no. 3, pp. 481-492, Mar. 1995.

M. Heinbach, M. Schienle, A. Schmid, B. Acklin and G. Müller, "Low-loss bent connections for optical switches", J. Lightw. Technol., vol. 15, no. 5, pp. 833-837, May 1997.

D. Marcuse, Theory of Dielectric Optical Waveguides, New York: Academic, 1974.

A. W. Snyder and J. D. Love, Optical Waveguide Theory, London: U.K.: Chapman & Hall, 1984.

M. P. do Carmo, Differential Geometry of Curves and Surfaces, Englewood Cliffs, NJ: Prentice-Hall, 1976.

D. Derickson, Ed. Fiber Optic Test and Measurement, Englewood Cliffs, NJ: Prentice-Hall, 1998.

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