Multiple optical wavelength passbands of Solc-type filters can be reselected within each fixed half-period by a scheduled rotation of each birefringent filter element. No additional wave plates are needed, and wavelength channels can be switched on or off while others continue unaffected. Designs for high-order transfer functions suitable for wavelength multiplexing are given along with experimental results for a set of fifth-order filters. This tuning concept is verified and its application in fiber-optic multiplexers is discussed.
© 1994 Optical Society of America
Carl F. Buhrer, "Synthesis and tuning of high-order Solc-type birefringent filters," Appl. Opt. 33, 2249-2254 (1994)