We introduce our recent progresses in the design and fabrication of the high channel-count fiber Bragg grating (FBG).
We theoretically and experimentally demonstrated the phase-only sampled FBG with channels up to 81, which could be
used as the dispersion compensator, the simultaneous dispersion and dispersion-slope compensator, respectively.
Moreover, we have presented a novel method for multi-channel FBG design, which enables us to design any kind of
multi-channel FBGs where the amplitude or the spectral response of each channel could be either identical or non-identical.
As an example, a novel design for a multi-channel FBG with asymmetrical triangular reflection spectrum has
An optical MEMS pressure sensor based on multi-layer circular diaphragm has been analyzed by utilizing the shell theory and characteristic matrix methods. Finite element methods are used to analyze the deflection of circular diaphragm with the residual stress effect considered. Simulation results are given by using FEM software tools ANSYS. The analytic expressions for the absolute reflectance of multi-layer circular diaphragm structure are derived. The results are valid for the most optical MEMS pressure sensors based on Fabry-Perot interferometer.