We describe here the design and operation of voltage tunable wavelength filters fabricated in titanium diffused LiNbO3. The devices, based on the nonsymmetric interferometer, have channel separations of 11–31 nm at λ = 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.
© 1989 Optical Society of America
Janet Lehr Jackel and John J. Johnson, "Voltage tunable LiNbO3 wavelength filters," Appl. Opt. 28, 2057-2060 (1989)