High-performance electro-optic polymers for high-frequency modulators

Geoffrey A. Lindsay; Andrew P. Chafin; Roy Gratz; Richard A. Hollins; Melvin P. Nadler; Eric G. Nickel; John D. Stenger-Smith; Rena Y. Yee; Warren N. Herman; Peter Zarris; Paul R. Ashley

doi:10.1117/12.264248

22 January 1997 High-performance electro-optic polymers for high-frequency modulators

Geoffrey A. Lindsay, Andrew P. Chafin, Roy Gratz, Richard A. Hollins, Melvin P. Nadler, Eric G. Nickel, John D. Stenger-Smith, Rena Y. Yee, Warren N. Herman, Peter Zarris, Paul R. Ashley

Author Affiliations +

Proceedings Volume 3006, Optoelectronic Integrated Circuits; (1997) https://doi.org/10.1117/12.264248
Event: Photonics West '97, 1997, San Jose, CA, United States

Abstract

New thermally stable, spin-castable, electro-optic (EO) polymers designed for high frequency optical modulators are reported (the third generation accordion polymers). The softening temperature (the glass transition temperature) is about 240 degrees Celsius, and the upper limit on short term thermal baking stability is about 320 degrees Celsius. The refractive index at 1.3 microns is about 1.73 and fairly birefringent. The second-order nonlinear optic coefficient, d₃₃, of a second generation accordion polymer containing essentially the same chromophore, measured by second- harmonic generation at 1.06 microns, is 120 pm/V (resonance enhanced by the 495 nm absorption). Measurement of the electro-optic coefficient, r₃₃, is in progress. The added thermal stability in these polymers is due to the all- aryl amine electron donor. The molecular topology of the polymer backbone makes it possible for over 85 weight percent of the bulk material to be comprised of EO-active chromophore. The chromophores are configured in a head-to- head mainchain topology. The films are completely amorphous (no microcrystalline scattering sites).

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Geoffrey A. Lindsay, Andrew P. Chafin, Roy Gratz, Richard A. Hollins, Melvin P. Nadler, Eric G. Nickel, John D. Stenger-Smith, Rena Y. Yee, Warren N. Herman, Peter Zarris, and Paul R. Ashley "High-performance electro-optic polymers for high-frequency modulators", Proc. SPIE 3006, Optoelectronic Integrated Circuits, (22 January 1997); https://doi.org/10.1117/12.264248

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