Resonant-wavelength tuning of a fibonacci one dimensional photonic crystal filter at telecommunication wavelengths

Abstract

We theoretically investigate and discuss a mechanically tunable ultra-narrowband optical filter based on a one dimensional quasi-periodic photonic crystal (QPPC) and an on-chip integrated MEMS actuator. High reliability, high wavelength tunability, integration capability and wide spectral shift are several advantages of the proposed filter. The optical response of the filter in the telecommunication region is obtained using a finite-difference-time domain (FDTD) method. The functional characteristics of the proposed filter according to the simulation results are as follows: a wavelength sensitivity of 0.323 nm/nm, FWHM of 5 nm, a spectral range of 34 nm, resonance mode quality factor of 310%, and 50% average transmission efficiency. Moreover, this device can be employed as the basic block of many devices such as displacement sensors, inertial sensors, ultra-narrowband tunable light absorbers, optical modulators and so on.