Highly Linear, Broadband Optical Modulator Based on Electro-optic Polymer Public Deposited

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  • In this paper, we present the design, fabrication and characterization of a traveling wave directional coupler modulator based on electro-optic polymer, which is able to provide both high linearity and broad bandwidth. The high linearity is realized by introducing Δβ-reversal technique in the two-domain directional coupler. A travelling wave electrode is designed to function with bandwidth-length product of 302GHz•cm, by achieving low microwave loss, excellent impedance matching and velocity matching, as well as smooth electric field profile transformation. The 3-dB bandwidth of the device is measured to be 10GHz. The spurious free dynamic range of 110dB±3Hz[superscript 2/3] is measured over the modulation frequency range 2-8GHz. To the best of our knowledge, such high linearity is first measured at the frequency up to 8GHz. In addition, a 1×2 multi-mode interference 3dB-splitter, a photobleached refractive index taper and a quasi-vertical taper are used to reduce the optical insertion loss of the device.
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  • Zhang, X., Lee, B., Lin, C., Wang, A. X., Hosseini, A., & Chen, R. T. (2012). Highly Linear Broadband Optical Modulator Based on Electro-Optic Polymer. Photonics Journal, IEEE, 4(6), 2214-2228.
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  • description.provenance : Submitted by Deanne Bruner (deanne.bruner@oregonstate.edu) on 2013-03-05T18:59:22Z No. of bitstreams: 1 WangAlanElectricalEngineeringComputerScienceHighlyLinearBroadband.pdf: 2010899 bytes, checksum: 8aba44175556d254000f9e21e774c2c8 (MD5)
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