Characterization of Nonlinear Polymers for High-speed Photonic Response and Nonlinear Dispersion
Final rept. 1 Apr 97-31 Mar 98
CALIFORNIA UNIV DAVIS DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
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High-frequency instrumentation was acquired to perform a high-frequency dielectric measurements on poled electro-active polymers and to determine the stability when exposed to microwave radiation, and b electro-optic measurements of the resonant enhancement of nonlinear polymers with demonstrated photochemical stability. In particular, the equipment was used to investigate large-bandwidth, traveling wave polymeric in-line fiber PILF modulator that is being co-developed by UC Davis and Optivision. This PILF amplitude modulator consists of a fiber half-coupler substrate evanescently coupled to a multimode electro-optic waveguide. PILF modulators are intrinsically rugged, exhibit low third order intermodulation nonlinearity and can be produced at lower cost than fiber pigtailed modulators. The equipment consisted of a high-frequency probe station, high-frequency amplifier and signal generator, 15 GHz photodetector, low relative intensity noise fiber coupled 1330 nm laser, and a 1064 diode pumped laser. The deviations from the original budget are that the 30K in UC cost sharing was used towards a laser ablation accessory for the probe station instead of the thermal evaporator, the elimination of the 1550 nm laser source and the purchase with fund remaining a high-frequency signal generator.
- Test Facilities, Equipment and Methods