Abstract

A novel optical add–drop multiplexer (OADM) based on a null coupler with an antisymmetric grating was designed and experimentally demonstrated. The antisymmetric grating exclusively produces a reflection with mode conversion in a two-mode waveguide. This improves the performance compared with previous demonstrations that used tilted Bragg gratings. Our design minimizes noise and cross talk produced by reflection without mode conversion. In addition, operational bandwidth and, versatility are improved while the compactness and simplicity of the null coupler OADM are maintained.

© 2006 Optical Society of America

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  1. A. V. Tran, W. D. Zhong, R. C. Tucker, and R. Lauder, "Optical add-drop multiplexers with low crosstalk," IEEE Photon. Technol. Lett. 13, 582-584 (2001).
    [CrossRef]
  2. A. S. Kewitsch, G. A. Rakuljic, P. A. Willems, and A. Yariv, "All-fiber zero-insertion-loss add-drop filter for wavelength-division multiplexing," Opt. Lett. 23, 106-108 (1998).
    [CrossRef]
  3. C. K. Madsen, T. A. Strasser, M. A. Milbrodt, C. H. Henry, A. J. Bruce, and J. Demarco, "Planar waveguide add/drop filter employing a mode converting grating in an adiabatic coupler," in Integrated Photonics Research, Vol. 4 of OSA 1998. Technical Digest Series (Optical Society of America, 1998), pp. 102-104.
  4. D. F. Geraghty, D. Provenzano, M. M. Morrell, S. Honkanen, A. Yariv, and N. Peyghambariam, "Ion-exchanged waveguide add/drop filter," Electron Lett. 37, 829-831 (2001).
    [CrossRef]
  5. C. Riziotis and M. N. Zervas, "Design considerations in optical add/drop multiplexers based on grating-assisted null couplers," IEEE J. Lightwave Technol. 19, 92-104 (2001).
    [CrossRef]
  6. J. M. Castro, D. F. Geraghty, B. West, and S. Honkanen, "Fabrication and comprehensive modeling of ion-exchanged Bragg optical add/drop multiplexers," Appl. Opt. 43, 6166-6173 (2004).
    [CrossRef] [PubMed]
  7. E. Marin, R. Ghosh, J.-P. Meunier, X. Dexhelet, and S. Lacroix, "Bragg gratings in 2 × 2 symmetric fused fiber couplers: influence of the tilt on the wavelength response," IEEE Photon. Technol. Lett. 11, 1434-1436 (1999).
    [CrossRef]
  8. T. Erdogan, "Optical add-drop multiplexer based on an asymmetric Bragg coupler," Opt. Commun. 157, 249-267 (1998).
    [CrossRef]
  9. G. Perrone, M. Laurenzano, and I. Montrosset, "Design and feasibility analysis of an innovative integrated grating-assisted add-drop multiplexer," J. Lighwave Technol. 19, 1943-1948 (2001).
    [CrossRef]
  10. M. Åslund, J. Canning, L. Poladian, C. M. de Sterke, and A. Judge, "Antisymmetric grating coupler:experimental results," Appl. Opt. 42, 6578-6583 (2003).
    [CrossRef] [PubMed]
  11. S. Tomljenovic-Hanic and J. D. Love, "Planar waveguide add/drop wavelength filters based on segmented gratings," Microwave Opt. Technol. Lett. 37, 163-165 (2003).
    [CrossRef]
  12. J. M. Castro, A. Sato, and D. F. Geraghty, "Waveguide mode conversion using anti-symmetric gratings," in Optical Fiber Communication Conference (OFC) (Optical Society of America, 2005), paper 0ME31.
  13. J. M. Castro, D. F. Geragthy, C. M. Greiner, D. Iazikov, and T. W. Mossberg, "Novel antisymmetric Bragg gratings for mode conversion," in Integrated Photonics Research, 2005 OSA Topical Meeting Digest Series (Optical Society of America, 2005), paper ITuF7.
  14. J. M. Castro, D. F. Geragthy, S. Honkanen, C. M. Greiner, D. Iazikov, and T. W. Mossberg, "Demonstration of mode conversion using anti-symmetric waveguide Bragg gratings," Opt. Express 13, 4180-4184 (2005).
    [CrossRef] [PubMed]
  15. R. Kashyap, Fiber Bragg Gratings (Academic, 1999).
  16. P. L. Ho and Y. Y. Lu, "A bidirectional beam propagation method for periodic waveguides," IEEE Photon. Technol. Lett. 14, 325-327 (2002).
    [CrossRef]
  17. C. Greiner, T. W. Mossberg, and D. Iazikov, "Bandpass engineering of lithographically scribed channel-waveguide Bragg gratings," Opt. Lett. 29, 806-808 (2004).
    [CrossRef] [PubMed]
  18. T. Erdogan and J. E. Sipe, "Tilted fiber phase gratings," J. Opt. Soc. Am. A 13, 296-313 (1996).
    [CrossRef]
  19. W. K. Burns and F. Milton, "Mode conversion in planar-dielectric separating waveguides," IEEE J. Quantum Electron. 11, 32-39 (1975).
    [CrossRef]
  20. C. P. Hussell, R. V. Ramaswamy, and R. Srivastava, "Wavelength and polarization insensitive 3 dB cross-coupler power dividers by ion exchange in glass," Appl. Phys. Lett. 56, 2381-2382 (1990).
    [CrossRef]
  21. R. Adar, C. H. Henry, R. H. Kistler, and R. F. Kazarinov, "Polarization independent narrow band Bragg reflection gratings made with silica-on-silicon waveguides," Appl. Phys. Lett. 60, 1779-1781 (1992).
    [CrossRef]
  22. J. M. Castro and D. F. Geraghty, "Optimization of optical add drop multiplexers based on grating-assisted null couplers," Opt. Eng. 44, 095002 (2005).
    [CrossRef]

2005 (2)

2004 (2)

2003 (2)

M. Åslund, J. Canning, L. Poladian, C. M. de Sterke, and A. Judge, "Antisymmetric grating coupler:experimental results," Appl. Opt. 42, 6578-6583 (2003).
[CrossRef] [PubMed]

S. Tomljenovic-Hanic and J. D. Love, "Planar waveguide add/drop wavelength filters based on segmented gratings," Microwave Opt. Technol. Lett. 37, 163-165 (2003).
[CrossRef]

2002 (1)

P. L. Ho and Y. Y. Lu, "A bidirectional beam propagation method for periodic waveguides," IEEE Photon. Technol. Lett. 14, 325-327 (2002).
[CrossRef]

2001 (4)

G. Perrone, M. Laurenzano, and I. Montrosset, "Design and feasibility analysis of an innovative integrated grating-assisted add-drop multiplexer," J. Lighwave Technol. 19, 1943-1948 (2001).
[CrossRef]

A. V. Tran, W. D. Zhong, R. C. Tucker, and R. Lauder, "Optical add-drop multiplexers with low crosstalk," IEEE Photon. Technol. Lett. 13, 582-584 (2001).
[CrossRef]

D. F. Geraghty, D. Provenzano, M. M. Morrell, S. Honkanen, A. Yariv, and N. Peyghambariam, "Ion-exchanged waveguide add/drop filter," Electron Lett. 37, 829-831 (2001).
[CrossRef]

C. Riziotis and M. N. Zervas, "Design considerations in optical add/drop multiplexers based on grating-assisted null couplers," IEEE J. Lightwave Technol. 19, 92-104 (2001).
[CrossRef]

1999 (1)

E. Marin, R. Ghosh, J.-P. Meunier, X. Dexhelet, and S. Lacroix, "Bragg gratings in 2 × 2 symmetric fused fiber couplers: influence of the tilt on the wavelength response," IEEE Photon. Technol. Lett. 11, 1434-1436 (1999).
[CrossRef]

1998 (2)

1996 (1)

1992 (1)

R. Adar, C. H. Henry, R. H. Kistler, and R. F. Kazarinov, "Polarization independent narrow band Bragg reflection gratings made with silica-on-silicon waveguides," Appl. Phys. Lett. 60, 1779-1781 (1992).
[CrossRef]

1990 (1)

C. P. Hussell, R. V. Ramaswamy, and R. Srivastava, "Wavelength and polarization insensitive 3 dB cross-coupler power dividers by ion exchange in glass," Appl. Phys. Lett. 56, 2381-2382 (1990).
[CrossRef]

1975 (1)

W. K. Burns and F. Milton, "Mode conversion in planar-dielectric separating waveguides," IEEE J. Quantum Electron. 11, 32-39 (1975).
[CrossRef]

Adar, R.

R. Adar, C. H. Henry, R. H. Kistler, and R. F. Kazarinov, "Polarization independent narrow band Bragg reflection gratings made with silica-on-silicon waveguides," Appl. Phys. Lett. 60, 1779-1781 (1992).
[CrossRef]

Åslund, M.

Bruce, A. J.

C. K. Madsen, T. A. Strasser, M. A. Milbrodt, C. H. Henry, A. J. Bruce, and J. Demarco, "Planar waveguide add/drop filter employing a mode converting grating in an adiabatic coupler," in Integrated Photonics Research, Vol. 4 of OSA 1998. Technical Digest Series (Optical Society of America, 1998), pp. 102-104.

Burns, W. K.

W. K. Burns and F. Milton, "Mode conversion in planar-dielectric separating waveguides," IEEE J. Quantum Electron. 11, 32-39 (1975).
[CrossRef]

Canning, J.

Castro, J. M.

J. M. Castro, D. F. Geragthy, S. Honkanen, C. M. Greiner, D. Iazikov, and T. W. Mossberg, "Demonstration of mode conversion using anti-symmetric waveguide Bragg gratings," Opt. Express 13, 4180-4184 (2005).
[CrossRef] [PubMed]

J. M. Castro and D. F. Geraghty, "Optimization of optical add drop multiplexers based on grating-assisted null couplers," Opt. Eng. 44, 095002 (2005).
[CrossRef]

J. M. Castro, D. F. Geraghty, B. West, and S. Honkanen, "Fabrication and comprehensive modeling of ion-exchanged Bragg optical add/drop multiplexers," Appl. Opt. 43, 6166-6173 (2004).
[CrossRef] [PubMed]

J. M. Castro, D. F. Geragthy, C. M. Greiner, D. Iazikov, and T. W. Mossberg, "Novel antisymmetric Bragg gratings for mode conversion," in Integrated Photonics Research, 2005 OSA Topical Meeting Digest Series (Optical Society of America, 2005), paper ITuF7.

J. M. Castro, A. Sato, and D. F. Geraghty, "Waveguide mode conversion using anti-symmetric gratings," in Optical Fiber Communication Conference (OFC) (Optical Society of America, 2005), paper 0ME31.

de Sterke, C. M.

Demarco, J.

C. K. Madsen, T. A. Strasser, M. A. Milbrodt, C. H. Henry, A. J. Bruce, and J. Demarco, "Planar waveguide add/drop filter employing a mode converting grating in an adiabatic coupler," in Integrated Photonics Research, Vol. 4 of OSA 1998. Technical Digest Series (Optical Society of America, 1998), pp. 102-104.

Dexhelet, X.

E. Marin, R. Ghosh, J.-P. Meunier, X. Dexhelet, and S. Lacroix, "Bragg gratings in 2 × 2 symmetric fused fiber couplers: influence of the tilt on the wavelength response," IEEE Photon. Technol. Lett. 11, 1434-1436 (1999).
[CrossRef]

Erdogan, T.

T. Erdogan, "Optical add-drop multiplexer based on an asymmetric Bragg coupler," Opt. Commun. 157, 249-267 (1998).
[CrossRef]

T. Erdogan and J. E. Sipe, "Tilted fiber phase gratings," J. Opt. Soc. Am. A 13, 296-313 (1996).
[CrossRef]

Geraghty, D. F.

J. M. Castro and D. F. Geraghty, "Optimization of optical add drop multiplexers based on grating-assisted null couplers," Opt. Eng. 44, 095002 (2005).
[CrossRef]

J. M. Castro, D. F. Geraghty, B. West, and S. Honkanen, "Fabrication and comprehensive modeling of ion-exchanged Bragg optical add/drop multiplexers," Appl. Opt. 43, 6166-6173 (2004).
[CrossRef] [PubMed]

D. F. Geraghty, D. Provenzano, M. M. Morrell, S. Honkanen, A. Yariv, and N. Peyghambariam, "Ion-exchanged waveguide add/drop filter," Electron Lett. 37, 829-831 (2001).
[CrossRef]

J. M. Castro, A. Sato, and D. F. Geraghty, "Waveguide mode conversion using anti-symmetric gratings," in Optical Fiber Communication Conference (OFC) (Optical Society of America, 2005), paper 0ME31.

Geragthy, D. F.

J. M. Castro, D. F. Geragthy, S. Honkanen, C. M. Greiner, D. Iazikov, and T. W. Mossberg, "Demonstration of mode conversion using anti-symmetric waveguide Bragg gratings," Opt. Express 13, 4180-4184 (2005).
[CrossRef] [PubMed]

J. M. Castro, D. F. Geragthy, C. M. Greiner, D. Iazikov, and T. W. Mossberg, "Novel antisymmetric Bragg gratings for mode conversion," in Integrated Photonics Research, 2005 OSA Topical Meeting Digest Series (Optical Society of America, 2005), paper ITuF7.

Ghosh, R.

E. Marin, R. Ghosh, J.-P. Meunier, X. Dexhelet, and S. Lacroix, "Bragg gratings in 2 × 2 symmetric fused fiber couplers: influence of the tilt on the wavelength response," IEEE Photon. Technol. Lett. 11, 1434-1436 (1999).
[CrossRef]

Greiner, C.

Greiner, C. M.

J. M. Castro, D. F. Geragthy, S. Honkanen, C. M. Greiner, D. Iazikov, and T. W. Mossberg, "Demonstration of mode conversion using anti-symmetric waveguide Bragg gratings," Opt. Express 13, 4180-4184 (2005).
[CrossRef] [PubMed]

J. M. Castro, D. F. Geragthy, C. M. Greiner, D. Iazikov, and T. W. Mossberg, "Novel antisymmetric Bragg gratings for mode conversion," in Integrated Photonics Research, 2005 OSA Topical Meeting Digest Series (Optical Society of America, 2005), paper ITuF7.

Henry, C. H.

R. Adar, C. H. Henry, R. H. Kistler, and R. F. Kazarinov, "Polarization independent narrow band Bragg reflection gratings made with silica-on-silicon waveguides," Appl. Phys. Lett. 60, 1779-1781 (1992).
[CrossRef]

C. K. Madsen, T. A. Strasser, M. A. Milbrodt, C. H. Henry, A. J. Bruce, and J. Demarco, "Planar waveguide add/drop filter employing a mode converting grating in an adiabatic coupler," in Integrated Photonics Research, Vol. 4 of OSA 1998. Technical Digest Series (Optical Society of America, 1998), pp. 102-104.

Ho, P. L.

P. L. Ho and Y. Y. Lu, "A bidirectional beam propagation method for periodic waveguides," IEEE Photon. Technol. Lett. 14, 325-327 (2002).
[CrossRef]

Honkanen, S.

Hussell, C. P.

C. P. Hussell, R. V. Ramaswamy, and R. Srivastava, "Wavelength and polarization insensitive 3 dB cross-coupler power dividers by ion exchange in glass," Appl. Phys. Lett. 56, 2381-2382 (1990).
[CrossRef]

Iazikov, D.

Judge, A.

Kashyap, R.

R. Kashyap, Fiber Bragg Gratings (Academic, 1999).

Kazarinov, R. F.

R. Adar, C. H. Henry, R. H. Kistler, and R. F. Kazarinov, "Polarization independent narrow band Bragg reflection gratings made with silica-on-silicon waveguides," Appl. Phys. Lett. 60, 1779-1781 (1992).
[CrossRef]

Kewitsch, A. S.

Kistler, R. H.

R. Adar, C. H. Henry, R. H. Kistler, and R. F. Kazarinov, "Polarization independent narrow band Bragg reflection gratings made with silica-on-silicon waveguides," Appl. Phys. Lett. 60, 1779-1781 (1992).
[CrossRef]

Lacroix, S.

E. Marin, R. Ghosh, J.-P. Meunier, X. Dexhelet, and S. Lacroix, "Bragg gratings in 2 × 2 symmetric fused fiber couplers: influence of the tilt on the wavelength response," IEEE Photon. Technol. Lett. 11, 1434-1436 (1999).
[CrossRef]

Lauder, R.

A. V. Tran, W. D. Zhong, R. C. Tucker, and R. Lauder, "Optical add-drop multiplexers with low crosstalk," IEEE Photon. Technol. Lett. 13, 582-584 (2001).
[CrossRef]

Laurenzano, M.

G. Perrone, M. Laurenzano, and I. Montrosset, "Design and feasibility analysis of an innovative integrated grating-assisted add-drop multiplexer," J. Lighwave Technol. 19, 1943-1948 (2001).
[CrossRef]

Love, J. D.

S. Tomljenovic-Hanic and J. D. Love, "Planar waveguide add/drop wavelength filters based on segmented gratings," Microwave Opt. Technol. Lett. 37, 163-165 (2003).
[CrossRef]

Lu, Y. Y.

P. L. Ho and Y. Y. Lu, "A bidirectional beam propagation method for periodic waveguides," IEEE Photon. Technol. Lett. 14, 325-327 (2002).
[CrossRef]

Madsen, C. K.

C. K. Madsen, T. A. Strasser, M. A. Milbrodt, C. H. Henry, A. J. Bruce, and J. Demarco, "Planar waveguide add/drop filter employing a mode converting grating in an adiabatic coupler," in Integrated Photonics Research, Vol. 4 of OSA 1998. Technical Digest Series (Optical Society of America, 1998), pp. 102-104.

Marin, E.

E. Marin, R. Ghosh, J.-P. Meunier, X. Dexhelet, and S. Lacroix, "Bragg gratings in 2 × 2 symmetric fused fiber couplers: influence of the tilt on the wavelength response," IEEE Photon. Technol. Lett. 11, 1434-1436 (1999).
[CrossRef]

Meunier, J.-P.

E. Marin, R. Ghosh, J.-P. Meunier, X. Dexhelet, and S. Lacroix, "Bragg gratings in 2 × 2 symmetric fused fiber couplers: influence of the tilt on the wavelength response," IEEE Photon. Technol. Lett. 11, 1434-1436 (1999).
[CrossRef]

Milbrodt, M. A.

C. K. Madsen, T. A. Strasser, M. A. Milbrodt, C. H. Henry, A. J. Bruce, and J. Demarco, "Planar waveguide add/drop filter employing a mode converting grating in an adiabatic coupler," in Integrated Photonics Research, Vol. 4 of OSA 1998. Technical Digest Series (Optical Society of America, 1998), pp. 102-104.

Milton, F.

W. K. Burns and F. Milton, "Mode conversion in planar-dielectric separating waveguides," IEEE J. Quantum Electron. 11, 32-39 (1975).
[CrossRef]

Montrosset, I.

G. Perrone, M. Laurenzano, and I. Montrosset, "Design and feasibility analysis of an innovative integrated grating-assisted add-drop multiplexer," J. Lighwave Technol. 19, 1943-1948 (2001).
[CrossRef]

Morrell, M. M.

D. F. Geraghty, D. Provenzano, M. M. Morrell, S. Honkanen, A. Yariv, and N. Peyghambariam, "Ion-exchanged waveguide add/drop filter," Electron Lett. 37, 829-831 (2001).
[CrossRef]

Mossberg, T. W.

Perrone, G.

G. Perrone, M. Laurenzano, and I. Montrosset, "Design and feasibility analysis of an innovative integrated grating-assisted add-drop multiplexer," J. Lighwave Technol. 19, 1943-1948 (2001).
[CrossRef]

Peyghambariam, N.

D. F. Geraghty, D. Provenzano, M. M. Morrell, S. Honkanen, A. Yariv, and N. Peyghambariam, "Ion-exchanged waveguide add/drop filter," Electron Lett. 37, 829-831 (2001).
[CrossRef]

Poladian, L.

Provenzano, D.

D. F. Geraghty, D. Provenzano, M. M. Morrell, S. Honkanen, A. Yariv, and N. Peyghambariam, "Ion-exchanged waveguide add/drop filter," Electron Lett. 37, 829-831 (2001).
[CrossRef]

Rakuljic, G. A.

Ramaswamy, R. V.

C. P. Hussell, R. V. Ramaswamy, and R. Srivastava, "Wavelength and polarization insensitive 3 dB cross-coupler power dividers by ion exchange in glass," Appl. Phys. Lett. 56, 2381-2382 (1990).
[CrossRef]

Riziotis, C.

C. Riziotis and M. N. Zervas, "Design considerations in optical add/drop multiplexers based on grating-assisted null couplers," IEEE J. Lightwave Technol. 19, 92-104 (2001).
[CrossRef]

Sato, A.

J. M. Castro, A. Sato, and D. F. Geraghty, "Waveguide mode conversion using anti-symmetric gratings," in Optical Fiber Communication Conference (OFC) (Optical Society of America, 2005), paper 0ME31.

Sipe, J. E.

Srivastava, R.

C. P. Hussell, R. V. Ramaswamy, and R. Srivastava, "Wavelength and polarization insensitive 3 dB cross-coupler power dividers by ion exchange in glass," Appl. Phys. Lett. 56, 2381-2382 (1990).
[CrossRef]

Strasser, T. A.

C. K. Madsen, T. A. Strasser, M. A. Milbrodt, C. H. Henry, A. J. Bruce, and J. Demarco, "Planar waveguide add/drop filter employing a mode converting grating in an adiabatic coupler," in Integrated Photonics Research, Vol. 4 of OSA 1998. Technical Digest Series (Optical Society of America, 1998), pp. 102-104.

Tomljenovic-Hanic, S.

S. Tomljenovic-Hanic and J. D. Love, "Planar waveguide add/drop wavelength filters based on segmented gratings," Microwave Opt. Technol. Lett. 37, 163-165 (2003).
[CrossRef]

Tran, A. V.

A. V. Tran, W. D. Zhong, R. C. Tucker, and R. Lauder, "Optical add-drop multiplexers with low crosstalk," IEEE Photon. Technol. Lett. 13, 582-584 (2001).
[CrossRef]

Tucker, R. C.

A. V. Tran, W. D. Zhong, R. C. Tucker, and R. Lauder, "Optical add-drop multiplexers with low crosstalk," IEEE Photon. Technol. Lett. 13, 582-584 (2001).
[CrossRef]

West, B.

Willems, P. A.

Yariv, A.

D. F. Geraghty, D. Provenzano, M. M. Morrell, S. Honkanen, A. Yariv, and N. Peyghambariam, "Ion-exchanged waveguide add/drop filter," Electron Lett. 37, 829-831 (2001).
[CrossRef]

A. S. Kewitsch, G. A. Rakuljic, P. A. Willems, and A. Yariv, "All-fiber zero-insertion-loss add-drop filter for wavelength-division multiplexing," Opt. Lett. 23, 106-108 (1998).
[CrossRef]

Zervas, M. N.

C. Riziotis and M. N. Zervas, "Design considerations in optical add/drop multiplexers based on grating-assisted null couplers," IEEE J. Lightwave Technol. 19, 92-104 (2001).
[CrossRef]

Zhong, W. D.

A. V. Tran, W. D. Zhong, R. C. Tucker, and R. Lauder, "Optical add-drop multiplexers with low crosstalk," IEEE Photon. Technol. Lett. 13, 582-584 (2001).
[CrossRef]

Appl. Opt. (2)

Appl. Phys. Lett. (2)

C. P. Hussell, R. V. Ramaswamy, and R. Srivastava, "Wavelength and polarization insensitive 3 dB cross-coupler power dividers by ion exchange in glass," Appl. Phys. Lett. 56, 2381-2382 (1990).
[CrossRef]

R. Adar, C. H. Henry, R. H. Kistler, and R. F. Kazarinov, "Polarization independent narrow band Bragg reflection gratings made with silica-on-silicon waveguides," Appl. Phys. Lett. 60, 1779-1781 (1992).
[CrossRef]

Electron Lett. (1)

D. F. Geraghty, D. Provenzano, M. M. Morrell, S. Honkanen, A. Yariv, and N. Peyghambariam, "Ion-exchanged waveguide add/drop filter," Electron Lett. 37, 829-831 (2001).
[CrossRef]

IEEE J. Lightwave Technol. (1)

C. Riziotis and M. N. Zervas, "Design considerations in optical add/drop multiplexers based on grating-assisted null couplers," IEEE J. Lightwave Technol. 19, 92-104 (2001).
[CrossRef]

IEEE J. Quantum Electron. (1)

W. K. Burns and F. Milton, "Mode conversion in planar-dielectric separating waveguides," IEEE J. Quantum Electron. 11, 32-39 (1975).
[CrossRef]

IEEE Photon. Technol. Lett. (3)

A. V. Tran, W. D. Zhong, R. C. Tucker, and R. Lauder, "Optical add-drop multiplexers with low crosstalk," IEEE Photon. Technol. Lett. 13, 582-584 (2001).
[CrossRef]

E. Marin, R. Ghosh, J.-P. Meunier, X. Dexhelet, and S. Lacroix, "Bragg gratings in 2 × 2 symmetric fused fiber couplers: influence of the tilt on the wavelength response," IEEE Photon. Technol. Lett. 11, 1434-1436 (1999).
[CrossRef]

P. L. Ho and Y. Y. Lu, "A bidirectional beam propagation method for periodic waveguides," IEEE Photon. Technol. Lett. 14, 325-327 (2002).
[CrossRef]

J. Lighwave Technol. (1)

G. Perrone, M. Laurenzano, and I. Montrosset, "Design and feasibility analysis of an innovative integrated grating-assisted add-drop multiplexer," J. Lighwave Technol. 19, 1943-1948 (2001).
[CrossRef]

J. Opt. Soc. Am. A (1)

Microwave Opt. Technol. Lett. (1)

S. Tomljenovic-Hanic and J. D. Love, "Planar waveguide add/drop wavelength filters based on segmented gratings," Microwave Opt. Technol. Lett. 37, 163-165 (2003).
[CrossRef]

Opt. Commun. (1)

T. Erdogan, "Optical add-drop multiplexer based on an asymmetric Bragg coupler," Opt. Commun. 157, 249-267 (1998).
[CrossRef]

Opt. Eng. (1)

J. M. Castro and D. F. Geraghty, "Optimization of optical add drop multiplexers based on grating-assisted null couplers," Opt. Eng. 44, 095002 (2005).
[CrossRef]

Opt. Express (1)

Opt. Lett. (2)

Other (4)

C. K. Madsen, T. A. Strasser, M. A. Milbrodt, C. H. Henry, A. J. Bruce, and J. Demarco, "Planar waveguide add/drop filter employing a mode converting grating in an adiabatic coupler," in Integrated Photonics Research, Vol. 4 of OSA 1998. Technical Digest Series (Optical Society of America, 1998), pp. 102-104.

J. M. Castro, A. Sato, and D. F. Geraghty, "Waveguide mode conversion using anti-symmetric gratings," in Optical Fiber Communication Conference (OFC) (Optical Society of America, 2005), paper 0ME31.

J. M. Castro, D. F. Geragthy, C. M. Greiner, D. Iazikov, and T. W. Mossberg, "Novel antisymmetric Bragg gratings for mode conversion," in Integrated Photonics Research, 2005 OSA Topical Meeting Digest Series (Optical Society of America, 2005), paper ITuF7.

R. Kashyap, Fiber Bragg Gratings (Academic, 1999).

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Figures (16)

Fig. 1
Fig. 1

Standard, untilted Bragg grating.

Fig. 2
Fig. 2

Tilted Bragg grating.

Fig. 3
Fig. 3

Antisymmetric grating.

Fig. 4
Fig. 4

Asymmetric Y-branch coupler.

Fig. 5
Fig. 5

Regions for one- and two-mode operation.

Fig. 6
Fig. 6

Comparison of antisymmetric and tilted Bragg gratings.

Fig. 7
Fig. 7

Schematic of the OADM with an antisymmetric grating.

Fig. 8
Fig. 8

Measured mode profiles for the (a) even and (b) odd modes.

Fig. 9
Fig. 9

Cross talk for two Y branches.

Fig. 10
Fig. 10

Setup for transmission and reflection measurements.

Fig. 11
Fig. 11

Power launched in the narrower branch (input port). TE reflection (darker curve) measured in the drop port. TE transmission measured at the output port (lighter curve).

Fig. 12
Fig. 12

Power launched in the wider branch (drop port). TE reflection (darker curve) measured in the input port. TE transmission measured at the add port (lighter curve).

Fig. 13
Fig. 13

Power launched in the narrower branch (input port). TM reflection measured (darker curve) in the drop port. TM transmission measured at the output port (lighter curve).

Fig. 14
Fig. 14

Power launched in the wider branch (drop port). TM reflection (darker-curve) measured in the input port. TM transmission (lighter curve) measured at the add port.

Fig. 15
Fig. 15

Schematic showing the OADM structure and method of operation.

Fig. 16
Fig. 16

Noise-free bandwidth limits the number of channels to be transmitted in an OADM-based on a TBG.

Equations (9)

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R a b = | r a b | 2 = [ tanh ( K a c a b L ) ] 2 ,
K a c a b = π λ Δ n η a b ,
η a b = e a * ( x , y ) ζ ( x , y ) e b ( x , y ) d x d y [ e a * ( x , y ) e a ( x , y ) d x d y e b * ( x , y ) e b ( x , y ) d x d y ] 1 / 2 ,
ζ ( x , y ) = exp [ i 2 π x tan ( θ ) Λ ] F ( y ) ,
ζ ( x , y ) | e a = b ( x , y ) | d x d y = 0.
Λ = λ o e / ( n e + n o ) ,
ζ ( x , y ) = s i g n ( x ) F ( y ) ,
10 log ( C d / C u ) .
Δ λ f n = λ e e λ o o 2 ,

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