Abstract

Optical waveguide mode-combiners for fundamental and first-order modes, based on multimode interference (MMI) couplers are presented. These devices convert a fundamental mode into a transversal first-order mode and combine it in lossless fashion with a second fundamental mode. They can separate zero- and first-order modes in a common waveguide and allow the splitting and combining of zero- and first-order modes with nonuniform power splitting ratios. Realizations in InGaAsP/InP are demonstrated. These new components have successfully been integrated into all-optical switches and were found to have advantageous characteristics in all-optical devices.

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  1. L. B. Soldano and E. C. M. Pennings, "Optical multimode interference devices based on self-imaging: Principles and applications," J. Lightwave Technol., vol. 13, pp. 615-627, Apr. 1995.
  2. P. A. Besse, M. Bachmann, H. Melchior, L. B. Soldano, and M. K. Smit, "Optical bandwidth and fabrication tolerances of multimode interference couplers," J. Lightwave Technol., vol. 12, pp. 1004-1009, June 1994.
  3. L. B. Soldano, F. B. Veerman, M. K. Smit, B. H. Verbeek, A. H. Dubost, and E. C. M. Pennings, "Planar monomode optical couplers based on multimode interference effects," J. Lightwave Technol., vol. 10, pp. 1843-1845, Dec. 1992.
  4. M. Bachmann, P. A. Besse, and H. Melchior, "General self-imaging properties in N \times N multimode interference couplers including phase relations," Appl. Opt., vol. 33, pp. 3905-3911, July 1994.

Appl. Opt. (1)

J. Lightwave Technol. (3)

L. B. Soldano and E. C. M. Pennings, "Optical multimode interference devices based on self-imaging: Principles and applications," J. Lightwave Technol., vol. 13, pp. 615-627, Apr. 1995.

P. A. Besse, M. Bachmann, H. Melchior, L. B. Soldano, and M. K. Smit, "Optical bandwidth and fabrication tolerances of multimode interference couplers," J. Lightwave Technol., vol. 12, pp. 1004-1009, June 1994.

L. B. Soldano, F. B. Veerman, M. K. Smit, B. H. Verbeek, A. H. Dubost, and E. C. M. Pennings, "Planar monomode optical couplers based on multimode interference effects," J. Lightwave Technol., vol. 10, pp. 1843-1845, Dec. 1992.

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