Abstract

A vernier configuration in a 2.5-GHz-spaced 128-channel arrayed-waveguide grating (AWG) for use as a secondary demultiplexer in a planar optical spectrum analyzer was incorporated with a tandem configuration. The frequency changes were 3.0 and 2.5 GHz for adjacent input and output ports, respectively. By selecting any of the eight input ports of the AWG, new passbands could be generated in the gaps between adjacent passbands and in the gaps produced when the diffraction order of the AWG was changed. Enough new passbands were generated to achieve frequency sampling at 1-GHz intervals without dead frequency points in the C and L bands of optical fiber amplifiers.

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  1. M. Teshima, M. Koga and K. Sato, "Performance of multiwavelength simultaneous monitoring circuit employing arrayed-waveguide grating", J. Lightw. Technol., vol. 14, no. 10, pp. 2277-2285, Oct. 1996.
  2. K. Takada, H. Yamada and K. Okamoto, "Optical spectrum analyzer using cascaded AWGs with different channel spacings", IEEE Photon. Technol. Lett., vol. 11, no. 7, pp. 863-864, Jul. 1999.
  3. K. Takada, M. Abe, Y. Hida, T. Shibata, M. Ishii, A. Himeno and K. Okamoto, "Fabrication of 2 GHz-spaced 16-channel arrayed-waveguide grating demultiplexer for optical frequency monitoring applications", Electron. Lett., vol. 36, no. 19, pp. 1643-1644, Sep. 2000.
  4. K. Takada, M. Abe and T. Shibata, "2.5 GHz-spaced cascaded demultiplexer for optical spectrum analyzer application in the C -and L -bands of optical fiber amplifiers", Electron. Lett., vol. 38, no. 15, pp. 815-816, Jul. 2002.
  5. H. Takahashi, K. Oda, H. Toba and Y. Inoue, "Transmission characteristics of arrayed waveguides N × N wavelength multiplexer", J. Lightw. Technol., vol. 13, no. 3, pp. 447-455, Mar. 1995.
  6. H. Uetsuka, K. Akiba, H. Okano, Y. Kurosawa and K. Morosawa, "Novel 1 × N guided-wave multi/demultiplexer for FDM", in Proc. OFC, 1995, Paper TuO7,. pp. 76-77.
  7. K. Takada, M. Abe and K. Okamoto, "Low-cross-talk polarization-insensitive 10-GHz-spaced 128-channel arrayed-waveguide grating multiplexer-demultiplexer achieved with photosensitive phase adjustment", Opt. Lett., vol. 26, no. 2, pp. 64-65, Jan. 2000.

Other (7)

M. Teshima, M. Koga and K. Sato, "Performance of multiwavelength simultaneous monitoring circuit employing arrayed-waveguide grating", J. Lightw. Technol., vol. 14, no. 10, pp. 2277-2285, Oct. 1996.

K. Takada, H. Yamada and K. Okamoto, "Optical spectrum analyzer using cascaded AWGs with different channel spacings", IEEE Photon. Technol. Lett., vol. 11, no. 7, pp. 863-864, Jul. 1999.

K. Takada, M. Abe, Y. Hida, T. Shibata, M. Ishii, A. Himeno and K. Okamoto, "Fabrication of 2 GHz-spaced 16-channel arrayed-waveguide grating demultiplexer for optical frequency monitoring applications", Electron. Lett., vol. 36, no. 19, pp. 1643-1644, Sep. 2000.

K. Takada, M. Abe and T. Shibata, "2.5 GHz-spaced cascaded demultiplexer for optical spectrum analyzer application in the C -and L -bands of optical fiber amplifiers", Electron. Lett., vol. 38, no. 15, pp. 815-816, Jul. 2002.

H. Takahashi, K. Oda, H. Toba and Y. Inoue, "Transmission characteristics of arrayed waveguides N × N wavelength multiplexer", J. Lightw. Technol., vol. 13, no. 3, pp. 447-455, Mar. 1995.

H. Uetsuka, K. Akiba, H. Okano, Y. Kurosawa and K. Morosawa, "Novel 1 × N guided-wave multi/demultiplexer for FDM", in Proc. OFC, 1995, Paper TuO7,. pp. 76-77.

K. Takada, M. Abe and K. Okamoto, "Low-cross-talk polarization-insensitive 10-GHz-spaced 128-channel arrayed-waveguide grating multiplexer-demultiplexer achieved with photosensitive phase adjustment", Opt. Lett., vol. 26, no. 2, pp. 64-65, Jan. 2000.

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