Voltage tunable LiNbO(3) wavelength filters

We describe here the design and operation of voltage tunable wavelength filters fabricated in titanium diffused LiNbO(3). The devices, based on the nonsymmetric interferometer, have channel separations of 11-31 nm at lambda= 1300 nm, and tuning rates of 3-10 nm/V. The periodic wavelength response of these filters allows them to be cascaded to combine or separate 2(N) channels in N stages.