Abstract

A three-focal-point method is used for the design of a flat-top planar waveguide concave grating. With the Gaussian approximation a modified formula is proposed and is compared with the numerical model of the scalar diffraction theory by using a design example. The sources of loss caused by the flat-top design and the grating are taken into consideration. The optimal separation between the two outmost focal points is obtained and the spectral response of the demultiplexer with a ripple below 0.04 dB is achieved.

© 2009 IEEE

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  1. K. Takada, M. Ade, T. Shibita, K. Okamoto, "A 25-GHz-spaced 1080-channel tandem multi/demultiplexer covering the S-, C-, and L-bands using an arrayed-waveguide grating with Gaussian passbands as primary filter," IEEE Photon. Technol. Lett. 14, 648-650 (2002).
  2. S. Janz, A. Balakrishnan, S. Charbonneau, P. Cheben, M. Cloutier, A. Delâge, K. Dossou, L. Erickson, M. Gao, P. A. Krug, B. Lamontagne, M. Packirisamy, M. Pearson, D.-X. Xu, "Planar waveguide echelle gratings in silica-on-silicon," IEEE Photon. Technol. Lett. 16, 503-505 (2004).
  3. M. R. Amersfoort, J. B. D. Soole, H. P. LeBlanc, N. C. Andreadakis, A. Rajhel, C. Caneau, "Passband broadening of integrated arrayed waveguide filters using multimode interference couplers," Electron. Lett. 32, 449-451 (1996).
  4. A. Rigny, A. Bruno, H. Sik, "Multigrating method for flattened spectral response wavelength multi/demultiplexer," Electron. Lett. 33, 1701-1702 (1997).
  5. C. Dragone, "Efficient techniques for widening the passband of a wavelength router," J. Lightw. Technol. 16, 1895-1906 (1998).
  6. Z. Shi, S. He, "A three-focal-point method for the optimal design of a flat-top planar waveguide demultiplexer," IEEE J. Sel. Top. Quantum Electron. 8, 1179-1185 (2002).
  7. J.-J. He, "Phase-dithered waveguide grating with flat passband and sharp transitions," IEEE J. Sel. Top. Quantum Electron. 8, 1186-1193 (2002).
  8. C. R. Doerr, L. W. Stulz, R. Pafchek, "Compact and low-loss integrated box-like passband multiplexer," IEEE Photon. Technol. Lett. 15, 918-920 (2003).
  9. J. Song, D. Pang, S. He, "A planar waveguide demultiplexer with a flat passband, sharp transitions and a low chromatic dispersion," Opt. Commum. 227, 89-97 (2003).
  10. Z. Shi, J.-J. He, S. He, "An analytic method for designing passband flattened DWDM demultiplexers using spatial phase modulation," J. Lightwave Technol. 21, 2314-2321 (2003).
  11. X. Chen, J. N. McMullin, C. J. Haugen, R. G. DeCorby, "Planar concave grating demultiplexer for coarse WDM based on confocal ellipses," Opt. Commum. 237, 71-77 (2004).
  12. C. Dragone, "Low-loss wavelength routers for WDM optical networks and high-capacity IP routers," J. Lightw. Technol. 23, 66-79 (2005).
  13. K. A. McGreer, "Theory of concave gratings based on a recursive definition of facet positions," Appl. Opt. 35, 5904-5910 (1996).
  14. C.-T. Lin, Y.-T. Huang, J.-Y. Huang, H.-H. Lin, "Integrated planar waveguide concave gratings for high density WDM systems," Proc. Opt. Commun. Syst. Netw. (2005) pp. 98-102.
  15. M. C. Hutley, Diffraction Gratings (Academic, 1982) pp. 228.
  16. K. A. McGreer, "Diffraction from concave gratings in planar waveguides," IEEE Photon. Technol. Lett. 7, 324-326 (1995).
  17. S. V. Kartalopoulos, Introduction to DWDM Technology (IEEE Press, 2000) pp. 184.
  18. H. Kogelnik, Guided-Wave Optoelectronics (Springer-Verlag, 1990).

2005 (1)

C. Dragone, "Low-loss wavelength routers for WDM optical networks and high-capacity IP routers," J. Lightw. Technol. 23, 66-79 (2005).

2004 (2)

X. Chen, J. N. McMullin, C. J. Haugen, R. G. DeCorby, "Planar concave grating demultiplexer for coarse WDM based on confocal ellipses," Opt. Commum. 237, 71-77 (2004).

S. Janz, A. Balakrishnan, S. Charbonneau, P. Cheben, M. Cloutier, A. Delâge, K. Dossou, L. Erickson, M. Gao, P. A. Krug, B. Lamontagne, M. Packirisamy, M. Pearson, D.-X. Xu, "Planar waveguide echelle gratings in silica-on-silicon," IEEE Photon. Technol. Lett. 16, 503-505 (2004).

2003 (3)

C. R. Doerr, L. W. Stulz, R. Pafchek, "Compact and low-loss integrated box-like passband multiplexer," IEEE Photon. Technol. Lett. 15, 918-920 (2003).

J. Song, D. Pang, S. He, "A planar waveguide demultiplexer with a flat passband, sharp transitions and a low chromatic dispersion," Opt. Commum. 227, 89-97 (2003).

Z. Shi, J.-J. He, S. He, "An analytic method for designing passband flattened DWDM demultiplexers using spatial phase modulation," J. Lightwave Technol. 21, 2314-2321 (2003).

2002 (3)

Z. Shi, S. He, "A three-focal-point method for the optimal design of a flat-top planar waveguide demultiplexer," IEEE J. Sel. Top. Quantum Electron. 8, 1179-1185 (2002).

J.-J. He, "Phase-dithered waveguide grating with flat passband and sharp transitions," IEEE J. Sel. Top. Quantum Electron. 8, 1186-1193 (2002).

K. Takada, M. Ade, T. Shibita, K. Okamoto, "A 25-GHz-spaced 1080-channel tandem multi/demultiplexer covering the S-, C-, and L-bands using an arrayed-waveguide grating with Gaussian passbands as primary filter," IEEE Photon. Technol. Lett. 14, 648-650 (2002).

1998 (1)

C. Dragone, "Efficient techniques for widening the passband of a wavelength router," J. Lightw. Technol. 16, 1895-1906 (1998).

1997 (1)

A. Rigny, A. Bruno, H. Sik, "Multigrating method for flattened spectral response wavelength multi/demultiplexer," Electron. Lett. 33, 1701-1702 (1997).

1996 (2)

M. R. Amersfoort, J. B. D. Soole, H. P. LeBlanc, N. C. Andreadakis, A. Rajhel, C. Caneau, "Passband broadening of integrated arrayed waveguide filters using multimode interference couplers," Electron. Lett. 32, 449-451 (1996).

K. A. McGreer, "Theory of concave gratings based on a recursive definition of facet positions," Appl. Opt. 35, 5904-5910 (1996).

1995 (1)

K. A. McGreer, "Diffraction from concave gratings in planar waveguides," IEEE Photon. Technol. Lett. 7, 324-326 (1995).

Appl. Opt. (1)

K. A. McGreer, "Theory of concave gratings based on a recursive definition of facet positions," Appl. Opt. 35, 5904-5910 (1996).

Electron. Lett. (2)

M. R. Amersfoort, J. B. D. Soole, H. P. LeBlanc, N. C. Andreadakis, A. Rajhel, C. Caneau, "Passband broadening of integrated arrayed waveguide filters using multimode interference couplers," Electron. Lett. 32, 449-451 (1996).

A. Rigny, A. Bruno, H. Sik, "Multigrating method for flattened spectral response wavelength multi/demultiplexer," Electron. Lett. 33, 1701-1702 (1997).

IEEE J. Sel. Top. Quantum Electron. (2)

Z. Shi, S. He, "A three-focal-point method for the optimal design of a flat-top planar waveguide demultiplexer," IEEE J. Sel. Top. Quantum Electron. 8, 1179-1185 (2002).

J.-J. He, "Phase-dithered waveguide grating with flat passband and sharp transitions," IEEE J. Sel. Top. Quantum Electron. 8, 1186-1193 (2002).

IEEE Photon. Technol. Lett. (1)

C. R. Doerr, L. W. Stulz, R. Pafchek, "Compact and low-loss integrated box-like passband multiplexer," IEEE Photon. Technol. Lett. 15, 918-920 (2003).

IEEE Photon. Technol. Lett. (2)

K. Takada, M. Ade, T. Shibita, K. Okamoto, "A 25-GHz-spaced 1080-channel tandem multi/demultiplexer covering the S-, C-, and L-bands using an arrayed-waveguide grating with Gaussian passbands as primary filter," IEEE Photon. Technol. Lett. 14, 648-650 (2002).

K. A. McGreer, "Diffraction from concave gratings in planar waveguides," IEEE Photon. Technol. Lett. 7, 324-326 (1995).

IEEE Photon. Technol. Lett. (1)

S. Janz, A. Balakrishnan, S. Charbonneau, P. Cheben, M. Cloutier, A. Delâge, K. Dossou, L. Erickson, M. Gao, P. A. Krug, B. Lamontagne, M. Packirisamy, M. Pearson, D.-X. Xu, "Planar waveguide echelle gratings in silica-on-silicon," IEEE Photon. Technol. Lett. 16, 503-505 (2004).

J. Lightw. Technol. (1)

C. Dragone, "Low-loss wavelength routers for WDM optical networks and high-capacity IP routers," J. Lightw. Technol. 23, 66-79 (2005).

J. Lightwave Technol. (1)

Z. Shi, J.-J. He, S. He, "An analytic method for designing passband flattened DWDM demultiplexers using spatial phase modulation," J. Lightwave Technol. 21, 2314-2321 (2003).

J. Lightw. Technol. (1)

C. Dragone, "Efficient techniques for widening the passband of a wavelength router," J. Lightw. Technol. 16, 1895-1906 (1998).

Opt. Commum. (2)

J. Song, D. Pang, S. He, "A planar waveguide demultiplexer with a flat passband, sharp transitions and a low chromatic dispersion," Opt. Commum. 227, 89-97 (2003).

X. Chen, J. N. McMullin, C. J. Haugen, R. G. DeCorby, "Planar concave grating demultiplexer for coarse WDM based on confocal ellipses," Opt. Commum. 237, 71-77 (2004).

Other (4)

C.-T. Lin, Y.-T. Huang, J.-Y. Huang, H.-H. Lin, "Integrated planar waveguide concave gratings for high density WDM systems," Proc. Opt. Commun. Syst. Netw. (2005) pp. 98-102.

M. C. Hutley, Diffraction Gratings (Academic, 1982) pp. 228.

S. V. Kartalopoulos, Introduction to DWDM Technology (IEEE Press, 2000) pp. 184.

H. Kogelnik, Guided-Wave Optoelectronics (Springer-Verlag, 1990).

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