Waveguide Array Grating Wavelength Demultiplexer on LiNbO3
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The waveguide array grating demultiplexer [1] exhibits wavelength routing that makes it suitable for many types of systems using wavelength multiplexing technique. Thus far, the device has been fabricated using a SiO2, compound semiconductor and polymer. We report a device fabricated using LiNbO3, an excellent electro-optic crystal that has been used in a wide variety of guided-wave devices. A polarization-independent device is obtained using a quarter -wave plate and a mirror.
[1] U. Koren,et al. Digitally tunable laser based on the integration of a waveguide grating multiplexer and an optical amplifier , 1994, IEEE Photonics Technology Letters.
[2] H. Takahashi,et al. Wavelength multiplexer based on SiO/sub 2/-Ta/sub 2/O/sub 5/ arrayed-waveguide grating , 1994 .