Numerical analysis of tunable filter based on MOEMS technology driven by electrostatic force;

Theoretical study on photonic crystal tunable filter with multiple channels;

Based on this,a tunable filter of double channel of one-dimensional photonic crystal is designed,with the tunable wavelength of 140 nm,tunable FWHM of 1～5 nm,peak value of transmissivit.

Suppression of sidelobe levels for acousto-optic tunable filters using cascaded three single-stage AOTFs

Design of tunable optical filter using ladder-interference-type structure;

Then,based on this characteristic of LPFGs,the designing of a new type of tunable optical filter was put forward.

The transmission properties of the one-dimensional photonic crystals with defects were studied using the eigen matrix method, and a new kind of tunable optical filter is proposed in this paper.

Attention is focused on holographic multi/demulitplexers for WDM systems, encoder/decoders for OCDMA, and tunable wavelength filters, the fundamental principles and progress of them are presented, moreover the prospect of applications of holography in optical communications is discussed.

A tunable filter is formed when a plasma defect is introduced in the one-dimensional dielectric-air microwave photonic crystal.