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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 23, Iss. 22 — Nov. 15, 1998
  • pp: 1748–1750

Method of achieving phase delay with wide optical bandwidth in multimode interference devices

R. M. Lorenzo, C. Llorente, E. J. Abril, J. C. Aguado, and M. López  »View Author Affiliations


Optics Letters, Vol. 23, Issue 22, pp. 1748-1750 (1998)
http://dx.doi.org/10.1364/OL.23.001748


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Abstract

A completely passive method of achieving phase delays inside multimode interference devices is presented. The desired relative phase is obtained by adjustment of the width of the waveguides in conjunction with the tapers to avoid interference inside the multimode section. One can generally apply the delay lines to avoid the use of active elements, and they are less sensitive to changes in wavelength than the traditional method with bends. Using this method, we have designed and analyzed a zero-to-one mode converter. The converter exhibits minimum excess loss of 0.100 and 0.102 for TE and TM polarization, respectively. A very large 1-dB bandwidth exceeding 350 nm is achieved.

© 1998 Optical Society of America

OCIS Codes
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.0130) Integrated optics : Integrated optics
(130.1750) Integrated optics : Components
(230.0230) Optical devices : Optical devices
(230.7390) Optical devices : Waveguides, planar

Citation
R. M. Lorenzo, C. Llorente, E. J. Abril, J. C. Aguado, and M. López, "Method of achieving phase delay with wide optical bandwidth in multimode interference devices," Opt. Lett. 23, 1748-1750 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-22-1748


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References

  1. L. Soldano and E. Pennings, J. Lightwave Technol. 13, 615 (1995).
  2. R. M. Lorenzo, C. Llorente, E. J. Abril, and M. López, IEE Proc. Optoelectron. 145, 65 (1998).
  3. M. Paiam and R. MacDonald, IEEE Photon. Techol. Lett. 10, 241 (1998).
  4. M. Bachmann, P. A. Besse, and H. Melchior, Appl. Opt. 34, 6898 (1995).
  5. R. van Roijen, E. C. M. Pennings, M. J. N. van Stralen, T. van Dongen, B. H. Verbeek, and J. M. M. van der Keijden, Appl. Phys. Lett. 64, 1753 (1994).
  6. B. Mikkelsen, S. Danielsen, H. Poulsen, and K. Stubkjaer, paper presented at the Eighth European Conference on Integrated Optics, Stockholm, Sweden, April 2–4, 1997.

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