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(Color online) Schematic of the cross-linked hybrid EO polymer/sol-gel waveguide modulator. (a) Side view of the structure. (b) Side view of improved mode confinement in the EO polymer using the three dimensional beam propagation method in the active region. long active region was used to calculate mode overlap integral. (c) Cross section in the active region. (d) Three dimensional view for the hybrid Mach-Zehnder modulator.
Chemical structure of the EO polymer AJ309. (a) Host polymer poly(methyl methacrylate-co-9-anthrylmethyl methacrylate) (PMMA-AMA) copolymer, bismaleimide (BMI) crosslinking agent, and the chromophore AJ146. (b) Host polymer cross-linked using a Diels-Alder reaction and dispersed chromophore.
(Color online) Schematic of the refractive index taper fabrication process. (a) UV exposure through the gray scale mask to provide a gradual change of the index between the passive and the active regions. (b) Observed color change of the bleached EO polymer from passive to active regions as observed through a microscope.
Low frequency transfer function measured at . Oscilloscope shows the traces of driving voltage (upper) and optical response (lower). (a) with an interelectrode distance of and an electrode length of . (b) with an interelectrode distance of and an electrode length of .
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