Abstract

By using an efficient vector finite-element-based beam-propagation method, we present an improved design of a polarization converter. This design relies on the use of a single-section deeply etched bent semiconductor waveguide with slanted sidewalls. By careful adjustment of the bend radius, the waveguide width, and the sidewall angle we obtained a nearly 100% polarization conversion ratio with no appreciable radiation loss and a bending angle of less than 180°.

© 2001 Optical Society of America

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References

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  1. M. Schlak, C. M. Weinert, P. Albrecht, H. P. Nolting, “Tunable TE/TM mode converter on (001)-InP-substrate,” IEEE Photon. Technol. Lett. 3, 15–16 (1991).
    [CrossRef]
  2. Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, “Polarization rotation in asymmetric periodic loaded rib waveguides,” Appl. Phys. Lett. 59, 1278–1280 (1991).
    [CrossRef]
  3. S. S. A. Obayya, B. M. A. Rahman, H. A. El-Mikati, “Vector beam propagation analysis of polarization conversion in periodically loaded waveguides,” IEEE Photon. Technol. Lett. 12, 1346–1348 (2000).
    [CrossRef]
  4. W. P. Huang, C. L. Xu, “Simulation of three-dimensional optical waveguides by a full vectorial beam propagation method,” IEEE J. Quantum Electron. 29, 2639–2649 (1993).
    [CrossRef]
  5. J. J. G. M. van der Tol, F. Hakimzadeh, J. W. Pedersen, D. Li, H. van Brug, “A new short and low-loss passive polarization converter on InP,” IEEE Photon. Technol. Lett. 7, 32–34 (1995).
    [CrossRef]
  6. H. Heidrich, P. Albrecht, M. Hamacher, H. P. Nolting, H. Schroeter-Janssen, C. M. Weinert, “Passive mode converter with a periodically tilted InP/GaInAsP rib waveguide,” IEEE Photon. Technol. Lett. 4, 34–36 (1992).
    [CrossRef]
  7. V. P. Tzolov, M. Fontaine, “A passive polarization converter free of longitudinally periodic structure,” Opt. Commun. 127, 7–13 (1996).
    [CrossRef]
  8. J. Z. Huang, R. Scarmozzino, G. Nagy, M. J. Steel, R. M. Osgood, “Realization of a compact and single-section optical polarization converter,” IEEE Photon. Technol. Lett. 12, 317–319 (2000).
    [CrossRef]
  9. B. M. A. Rahman, S. S. A. Obayya, N. Somasiri, M. Rajarajan, K. T. V. Grattan, H. A. El-Mikati, “Design and characterization of compact single-section passive polarization converter,” J. Lightwave Technol. 19, 512–519 (2001).
    [CrossRef]
  10. C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
    [CrossRef]
  11. W. W. Lui, T. Hirono, K. Yokoyama, W. P. Huang, “Polarization rotation in semiconductor bending waveguides: a coupled-mode theory formulation,” J. Lightwave Technol. 16, 929–936 (1998).
    [CrossRef]
  12. B. M. A. Rahman, J. B. Davies, “Finite element solution of integrated optical waveguides,” J. Lightwave Technol. 2, 682–688 (1984).
    [CrossRef]
  13. W. W. Lui, C. L. Xu, W. P. Huang, K. Yokoyama, S. Seki, “Full-vectorial mode analysis with considerations of field singularities at corners of optical waveguides,” J. Lightwave Technol. 17, 1509–1513 (1999).
    [CrossRef]
  14. S. S. A. Obayya, B. M. A. Rahman, H. A. El-Mikati, “New full-vectorial numerically efficient propagation algorithm based on the finite element method,” J. Lightwave Technol. 18, 409–415 (2000).
    [CrossRef]
  15. M. Heiblum, J. H. Harris, “Analysis of curved optical waveguides by conformal transformation,” IEEE J. Quantum Electron. 11, 75–83 (1975).
    [CrossRef]

2001 (1)

2000 (3)

S. S. A. Obayya, B. M. A. Rahman, H. A. El-Mikati, “New full-vectorial numerically efficient propagation algorithm based on the finite element method,” J. Lightwave Technol. 18, 409–415 (2000).
[CrossRef]

S. S. A. Obayya, B. M. A. Rahman, H. A. El-Mikati, “Vector beam propagation analysis of polarization conversion in periodically loaded waveguides,” IEEE Photon. Technol. Lett. 12, 1346–1348 (2000).
[CrossRef]

J. Z. Huang, R. Scarmozzino, G. Nagy, M. J. Steel, R. M. Osgood, “Realization of a compact and single-section optical polarization converter,” IEEE Photon. Technol. Lett. 12, 317–319 (2000).
[CrossRef]

1999 (1)

1998 (1)

1996 (2)

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

V. P. Tzolov, M. Fontaine, “A passive polarization converter free of longitudinally periodic structure,” Opt. Commun. 127, 7–13 (1996).
[CrossRef]

1995 (1)

J. J. G. M. van der Tol, F. Hakimzadeh, J. W. Pedersen, D. Li, H. van Brug, “A new short and low-loss passive polarization converter on InP,” IEEE Photon. Technol. Lett. 7, 32–34 (1995).
[CrossRef]

1993 (1)

W. P. Huang, C. L. Xu, “Simulation of three-dimensional optical waveguides by a full vectorial beam propagation method,” IEEE J. Quantum Electron. 29, 2639–2649 (1993).
[CrossRef]

1992 (1)

H. Heidrich, P. Albrecht, M. Hamacher, H. P. Nolting, H. Schroeter-Janssen, C. M. Weinert, “Passive mode converter with a periodically tilted InP/GaInAsP rib waveguide,” IEEE Photon. Technol. Lett. 4, 34–36 (1992).
[CrossRef]

1991 (2)

M. Schlak, C. M. Weinert, P. Albrecht, H. P. Nolting, “Tunable TE/TM mode converter on (001)-InP-substrate,” IEEE Photon. Technol. Lett. 3, 15–16 (1991).
[CrossRef]

Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, “Polarization rotation in asymmetric periodic loaded rib waveguides,” Appl. Phys. Lett. 59, 1278–1280 (1991).
[CrossRef]

1984 (1)

B. M. A. Rahman, J. B. Davies, “Finite element solution of integrated optical waveguides,” J. Lightwave Technol. 2, 682–688 (1984).
[CrossRef]

1975 (1)

M. Heiblum, J. H. Harris, “Analysis of curved optical waveguides by conformal transformation,” IEEE J. Quantum Electron. 11, 75–83 (1975).
[CrossRef]

Albrecht, P.

H. Heidrich, P. Albrecht, M. Hamacher, H. P. Nolting, H. Schroeter-Janssen, C. M. Weinert, “Passive mode converter with a periodically tilted InP/GaInAsP rib waveguide,” IEEE Photon. Technol. Lett. 4, 34–36 (1992).
[CrossRef]

M. Schlak, C. M. Weinert, P. Albrecht, H. P. Nolting, “Tunable TE/TM mode converter on (001)-InP-substrate,” IEEE Photon. Technol. Lett. 3, 15–16 (1991).
[CrossRef]

Alferness, R.

Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, “Polarization rotation in asymmetric periodic loaded rib waveguides,” Appl. Phys. Lett. 59, 1278–1280 (1991).
[CrossRef]

Davies, J. B.

B. M. A. Rahman, J. B. Davies, “Finite element solution of integrated optical waveguides,” J. Lightwave Technol. 2, 682–688 (1984).
[CrossRef]

El-Mikati, H. A.

Fontaine, M.

V. P. Tzolov, M. Fontaine, “A passive polarization converter free of longitudinally periodic structure,” Opt. Commun. 127, 7–13 (1996).
[CrossRef]

Grattan, K. T. V.

Groen, F. H.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

Hakimzadeh, F.

J. J. G. M. van der Tol, F. Hakimzadeh, J. W. Pedersen, D. Li, H. van Brug, “A new short and low-loss passive polarization converter on InP,” IEEE Photon. Technol. Lett. 7, 32–34 (1995).
[CrossRef]

Hamacher, M.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

H. Heidrich, P. Albrecht, M. Hamacher, H. P. Nolting, H. Schroeter-Janssen, C. M. Weinert, “Passive mode converter with a periodically tilted InP/GaInAsP rib waveguide,” IEEE Photon. Technol. Lett. 4, 34–36 (1992).
[CrossRef]

Harris, J. H.

M. Heiblum, J. H. Harris, “Analysis of curved optical waveguides by conformal transformation,” IEEE J. Quantum Electron. 11, 75–83 (1975).
[CrossRef]

Heiblum, M.

M. Heiblum, J. H. Harris, “Analysis of curved optical waveguides by conformal transformation,” IEEE J. Quantum Electron. 11, 75–83 (1975).
[CrossRef]

Heidrcih, H.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

Heidrich, H.

H. Heidrich, P. Albrecht, M. Hamacher, H. P. Nolting, H. Schroeter-Janssen, C. M. Weinert, “Passive mode converter with a periodically tilted InP/GaInAsP rib waveguide,” IEEE Photon. Technol. Lett. 4, 34–36 (1992).
[CrossRef]

Hirono, T.

Huang, J. Z.

J. Z. Huang, R. Scarmozzino, G. Nagy, M. J. Steel, R. M. Osgood, “Realization of a compact and single-section optical polarization converter,” IEEE Photon. Technol. Lett. 12, 317–319 (2000).
[CrossRef]

Huang, W. P.

Koch, T.

Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, “Polarization rotation in asymmetric periodic loaded rib waveguides,” Appl. Phys. Lett. 59, 1278–1280 (1991).
[CrossRef]

Koren, U.

Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, “Polarization rotation in asymmetric periodic loaded rib waveguides,” Appl. Phys. Lett. 59, 1278–1280 (1991).
[CrossRef]

Li, D.

J. J. G. M. van der Tol, F. Hakimzadeh, J. W. Pedersen, D. Li, H. van Brug, “A new short and low-loss passive polarization converter on InP,” IEEE Photon. Technol. Lett. 7, 32–34 (1995).
[CrossRef]

Lui, W. W.

Miller, B. I.

Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, “Polarization rotation in asymmetric periodic loaded rib waveguides,” Appl. Phys. Lett. 59, 1278–1280 (1991).
[CrossRef]

Moerman, I.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

Nagy, G.

J. Z. Huang, R. Scarmozzino, G. Nagy, M. J. Steel, R. M. Osgood, “Realization of a compact and single-section optical polarization converter,” IEEE Photon. Technol. Lett. 12, 317–319 (2000).
[CrossRef]

Nolting, H. P.

H. Heidrich, P. Albrecht, M. Hamacher, H. P. Nolting, H. Schroeter-Janssen, C. M. Weinert, “Passive mode converter with a periodically tilted InP/GaInAsP rib waveguide,” IEEE Photon. Technol. Lett. 4, 34–36 (1992).
[CrossRef]

M. Schlak, C. M. Weinert, P. Albrecht, H. P. Nolting, “Tunable TE/TM mode converter on (001)-InP-substrate,” IEEE Photon. Technol. Lett. 3, 15–16 (1991).
[CrossRef]

Obayya, S. S. A.

Oron, M.

Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, “Polarization rotation in asymmetric periodic loaded rib waveguides,” Appl. Phys. Lett. 59, 1278–1280 (1991).
[CrossRef]

Osgood, R. M.

J. Z. Huang, R. Scarmozzino, G. Nagy, M. J. Steel, R. M. Osgood, “Realization of a compact and single-section optical polarization converter,” IEEE Photon. Technol. Lett. 12, 317–319 (2000).
[CrossRef]

Pascher, W. W.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

Pedersen, J. W.

J. J. G. M. van der Tol, F. Hakimzadeh, J. W. Pedersen, D. Li, H. van Brug, “A new short and low-loss passive polarization converter on InP,” IEEE Photon. Technol. Lett. 7, 32–34 (1995).
[CrossRef]

Rahman, B. M. A.

B. M. A. Rahman, S. S. A. Obayya, N. Somasiri, M. Rajarajan, K. T. V. Grattan, H. A. El-Mikati, “Design and characterization of compact single-section passive polarization converter,” J. Lightwave Technol. 19, 512–519 (2001).
[CrossRef]

S. S. A. Obayya, B. M. A. Rahman, H. A. El-Mikati, “Vector beam propagation analysis of polarization conversion in periodically loaded waveguides,” IEEE Photon. Technol. Lett. 12, 1346–1348 (2000).
[CrossRef]

S. S. A. Obayya, B. M. A. Rahman, H. A. El-Mikati, “New full-vectorial numerically efficient propagation algorithm based on the finite element method,” J. Lightwave Technol. 18, 409–415 (2000).
[CrossRef]

B. M. A. Rahman, J. B. Davies, “Finite element solution of integrated optical waveguides,” J. Lightwave Technol. 2, 682–688 (1984).
[CrossRef]

Rajarajan, M.

Scarmozzino, R.

J. Z. Huang, R. Scarmozzino, G. Nagy, M. J. Steel, R. M. Osgood, “Realization of a compact and single-section optical polarization converter,” IEEE Photon. Technol. Lett. 12, 317–319 (2000).
[CrossRef]

Schlak, M.

M. Schlak, C. M. Weinert, P. Albrecht, H. P. Nolting, “Tunable TE/TM mode converter on (001)-InP-substrate,” IEEE Photon. Technol. Lett. 3, 15–16 (1991).
[CrossRef]

Schroeter-Janssen, H.

H. Heidrich, P. Albrecht, M. Hamacher, H. P. Nolting, H. Schroeter-Janssen, C. M. Weinert, “Passive mode converter with a periodically tilted InP/GaInAsP rib waveguide,” IEEE Photon. Technol. Lett. 4, 34–36 (1992).
[CrossRef]

Seki, S.

Shani, Y.

Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, “Polarization rotation in asymmetric periodic loaded rib waveguides,” Appl. Phys. Lett. 59, 1278–1280 (1991).
[CrossRef]

Smit, M. K.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

Somasiri, N.

Spiekman, L. H.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

Steel, M. J.

J. Z. Huang, R. Scarmozzino, G. Nagy, M. J. Steel, R. M. Osgood, “Realization of a compact and single-section optical polarization converter,” IEEE Photon. Technol. Lett. 12, 317–319 (2000).
[CrossRef]

Tzolov, V. P.

V. P. Tzolov, M. Fontaine, “A passive polarization converter free of longitudinally periodic structure,” Opt. Commun. 127, 7–13 (1996).
[CrossRef]

van Brug, H.

J. J. G. M. van der Tol, F. Hakimzadeh, J. W. Pedersen, D. Li, H. van Brug, “A new short and low-loss passive polarization converter on InP,” IEEE Photon. Technol. Lett. 7, 32–34 (1995).
[CrossRef]

van Dam, C.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

van der Tol, J. J. G. M.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

J. J. G. M. van der Tol, F. Hakimzadeh, J. W. Pedersen, D. Li, H. van Brug, “A new short and low-loss passive polarization converter on InP,” IEEE Photon. Technol. Lett. 7, 32–34 (1995).
[CrossRef]

van Ham, F. P. G. M.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

Weinert, C. M.

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

H. Heidrich, P. Albrecht, M. Hamacher, H. P. Nolting, H. Schroeter-Janssen, C. M. Weinert, “Passive mode converter with a periodically tilted InP/GaInAsP rib waveguide,” IEEE Photon. Technol. Lett. 4, 34–36 (1992).
[CrossRef]

M. Schlak, C. M. Weinert, P. Albrecht, H. P. Nolting, “Tunable TE/TM mode converter on (001)-InP-substrate,” IEEE Photon. Technol. Lett. 3, 15–16 (1991).
[CrossRef]

Xu, C. L.

W. W. Lui, C. L. Xu, W. P. Huang, K. Yokoyama, S. Seki, “Full-vectorial mode analysis with considerations of field singularities at corners of optical waveguides,” J. Lightwave Technol. 17, 1509–1513 (1999).
[CrossRef]

W. P. Huang, C. L. Xu, “Simulation of three-dimensional optical waveguides by a full vectorial beam propagation method,” IEEE J. Quantum Electron. 29, 2639–2649 (1993).
[CrossRef]

Yokoyama, K.

Young, M. G.

Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, “Polarization rotation in asymmetric periodic loaded rib waveguides,” Appl. Phys. Lett. 59, 1278–1280 (1991).
[CrossRef]

Appl. Phys. Lett. (1)

Y. Shani, R. Alferness, T. Koch, U. Koren, M. Oron, B. I. Miller, M. G. Young, “Polarization rotation in asymmetric periodic loaded rib waveguides,” Appl. Phys. Lett. 59, 1278–1280 (1991).
[CrossRef]

IEEE J. Quantum Electron. (2)

W. P. Huang, C. L. Xu, “Simulation of three-dimensional optical waveguides by a full vectorial beam propagation method,” IEEE J. Quantum Electron. 29, 2639–2649 (1993).
[CrossRef]

M. Heiblum, J. H. Harris, “Analysis of curved optical waveguides by conformal transformation,” IEEE J. Quantum Electron. 11, 75–83 (1975).
[CrossRef]

IEEE Photon. Technol. Lett. (6)

M. Schlak, C. M. Weinert, P. Albrecht, H. P. Nolting, “Tunable TE/TM mode converter on (001)-InP-substrate,” IEEE Photon. Technol. Lett. 3, 15–16 (1991).
[CrossRef]

J. J. G. M. van der Tol, F. Hakimzadeh, J. W. Pedersen, D. Li, H. van Brug, “A new short and low-loss passive polarization converter on InP,” IEEE Photon. Technol. Lett. 7, 32–34 (1995).
[CrossRef]

H. Heidrich, P. Albrecht, M. Hamacher, H. P. Nolting, H. Schroeter-Janssen, C. M. Weinert, “Passive mode converter with a periodically tilted InP/GaInAsP rib waveguide,” IEEE Photon. Technol. Lett. 4, 34–36 (1992).
[CrossRef]

S. S. A. Obayya, B. M. A. Rahman, H. A. El-Mikati, “Vector beam propagation analysis of polarization conversion in periodically loaded waveguides,” IEEE Photon. Technol. Lett. 12, 1346–1348 (2000).
[CrossRef]

J. Z. Huang, R. Scarmozzino, G. Nagy, M. J. Steel, R. M. Osgood, “Realization of a compact and single-section optical polarization converter,” IEEE Photon. Technol. Lett. 12, 317–319 (2000).
[CrossRef]

C. van Dam, L. H. Spiekman, F. P. G. M. van Ham, F. H. Groen, J. J. G. M. van der Tol, I. Moerman, W. W. Pascher, M. Hamacher, H. Heidrcih, C. M. Weinert, M. K. Smit, “Novel compact polarization converters based on ultra short bends,” IEEE Photon. Technol. Lett. 8, 1346–1348 (1996).
[CrossRef]

J. Lightwave Technol. (5)

Opt. Commun. (1)

V. P. Tzolov, M. Fontaine, “A passive polarization converter free of longitudinally periodic structure,” Opt. Commun. 127, 7–13 (1996).
[CrossRef]

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Figures (13)

Fig. 1
Fig. 1

Schematic diagram of a deeply etched semiconductor optical-waveguide bend.

Fig. 2
Fig. 2

Variations of the TE and TM powers along the longitudinal direction for different values of the radius of curvature R.

Fig. 3
Fig. 3

Variations of the maximum polarization-conversion ratio with the radius of curvature R for different waveguide widths W.

Fig. 4
Fig. 4

Variations of the conversion length L with the radius of curvature R for different waveguide widths W.

Fig. 5
Fig. 5

Variations of the maximum polarization-conversion ratio with the radius of curvature R for different values of the guide refractive index n g .

Fig. 6
Fig. 6

Variations of the conversion length L with the radius of curvature R for different values of the guide refractive index n g .

Fig. 7
Fig. 7

Variations of the maximum polarization-conversion ratio with the radius of curvature R for vertical sidewalls, single-slanted sidewall, and double-slanted sidewalls with a slant angle θ of 10°.

Fig. 8
Fig. 8

Variations of the conversion length L with the radius of curvature R for vertical sidewalls, single-slanted sidewall, and double-slanted sidewalls with a slant angle θ of 10°.

Fig. 9
Fig. 9

Variations of the maximum polarization-conversion ratio with the radius of curvature R for a double-slanted sidewalls case with different slant angles θ.

Fig. 10
Fig. 10

Variations of the conversion length L with the radius of curvature R for a double-slanted sidewalls case with different slant angles θ.

Fig. 11
Fig. 11

Variations of the maximum polarization-conversion ratio along the longitudinal direction for a waveguide width W of 1.8 µm, a slant angle θ of 35°, and the radius of curvature R.

Fig. 12
Fig. 12

Variations of the polarization-conversion ratio along the longitudinal direction for a waveguide width W of 1.8 µm, a radius of curvature R of 21 µm, and the slant angle θ.

Fig. 13
Fig. 13

Variations of the polarization-conversion ratio along the longitudinal direction for a radius of curvature R of 21 µm, a slant angle θ of 10°, and the waveguide width W.

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