An automatic 40-wavelength channelized equalizer

We demonstrate a wavelength equalizer in planar silica waveguides that can automatically control individual channel powers in a 40-channel 100-GHz-channel-spacing wavelength-division multiplexed system, yet gives no distortion to channels that already have the same power as their neighbors. It has <6.8 dB insertion loss over 32-nm, 9-13-dB attenuation range, and <0.18 dB polarization/time-dependent loss.

[1]  H. Toba,et al.  Tunable gain equalization using a Mach-Zehnder optical filter in multistage fiber amplifiers , 1991, IEEE Photonics Technology Letters.

[2]  M. Zirngibl,et al.  Digitally tunable channel dropping filter/equalizer based on waveguide grating router and optical amplifier integration , 1994, IEEE Photonics Technology Letters.

[4]  F. Horst,et al.  Adaptive gain equalizer in high-index-contrast SiON technology , 2000, IEEE Photonics Technology Letters.

[5]  Cascaded planar waveguide arrays , 1999 .

[6]  C. Doerr,et al.  Dynamic wavelength equalizer in silica using the single-filtered-arm interferometer , 1999, IEEE Photonics Technology Letters.

[7]  Alan E. Willner,et al.  tal Demonstration of Dynamic Hi lization of Three WDM Chann g Acoustooptic Modulators and a Wavelength Demulti -Speed , 1997 .

[8]  C. Dragone,et al.  Proposed optical cross connect using a planar arrangement of beam steerers , 1999, IEEE Photonics Technology Letters.

[9]  J. A. Walker,et al.  Dynamic spectral power equalization using micro-opto-mechanics , 1998, IEEE Photonics Technology Letters.

[10]  Namkyoo Park,et al.  Actively gain-flattened erbium-doped fiber amplifier over 35 nm by using all-fiber acoustooptic tunable filters , 1998 .

[11]  A. Dentai,et al.  Low-loss channelized WDM spectral equalizer using lightwave micromachines and autonomous power regulation , 1999, OFC/IOOC . Technical Digest. Optical Fiber Communication Conference, 1999, and the International Conference on Integrated Optics and Optical Fiber Communication.

[12]  M. Parker,et al.  Dynamic holographic spectral equalization for WDM , 1997, IEEE Photonics Technology Letters.