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11 September 2007 Short polymer waveguide resonator with Bragg reflectors
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Abstract
We designed a compact optical resonator with two distributed Bragg reflectors (DBR) embedded on single mode polymer ridge waveguide structure towards micro-scale polymer lasers. Single DBR is made up of alternating layers with λ/4 thickness of air and polymer. Numerical simulation of the device was carried out with 3D FDTD. We investigated the reflectance of single DBR as a function of order and number of periods and found a maximum of 97.8%, achieved for a TE mode with air cladding in material with low refractive index 1.54. Focused ion beam (FIB) lithography was used to open periodic air gaps on a 3 um wide ridge waveguide consisting of 1 um thick polymer layer doped with disperse red 1 (n=1.54) structure. Single DBR with five periods are optically characterized by observing the transmission through the device.
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Tao Liu, Magdalena Nawrocka, and Roberto Panepucci "Short polymer waveguide resonator with Bragg reflectors", Proc. SPIE 6645, Nanoengineering: Fabrication, Properties, Optics, and Devices IV, 66450H (11 September 2007); https://doi.org/10.1117/12.734517
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