Title :
Tunable Optical Filter With Cascaded Waveguide Fabry–Pérot Resonators Featuring Liquid Crystal Cladding
Author :
Kato, Akifumi ; Nakatsuhara, Katsumi ; Nakagami, Takakiyo
Author_Institution :
Dept. of Electr. & Electron. Eng., Kanagawa Inst. of Technol., Atsugi, Japan
Abstract :
We developed and fabricated a tunable optical filter using Si-waveguide multiple-cavity Fabry-Pérot resonators with ferro-electric liquid crystal cladding. The proposed filter can be monolithically integrated with other Si photonics devices because no cleaved facets are required. Also, the bistable characteristic of ferro-electric liquid crystal cladding means the power consumption is low. We tested wavelength operation in the fabricated device and determined that it was able to obtain a phase shift of 0.38 π. It also had improved resonant wavelength characteristics.
Keywords :
Fabry-Perot resonators; liquid crystals; optical fabrication; optical fibre cladding; optical filters; optical waveguides; Fabry Pérot resonators; bistable characteristic; cascaded waveguide; liquid crystal cladding; tunable optical filter; Cavity resonators; Extinction ratio; Optical filters; Optical resonators; Optical waveguides; Resonator filters; Silicon; Liquid crystal; optical filters; optical resonators; semiconductor waveguide;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2177452
