Organic Electro-optic Materials and Devices: Molecular Engineering Driving Device Performance and Technology Innovation

Norwood, Robert A.

doi:10.1364/cleo_si.2014.sm2m.1

Cited by 1 publication

(1 citation statement)

References 7 publications

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“…This silicon-organic hybrid uses the EO Pockels effect that offers much lower loss than GST in state 2 and slightly lower loss than GST in state 1. However, there is a length issue, and, even if we consider the most advanced polymers [20,21], we estimate that the active length at 2.1 μm is approximately 2000 μm. Hence, GST is considerably more compact.…”

Section: Comparison and Conclusionmentioning

confidence: 87%

Electro-optical phase-change 2 × 2 switching using three- and four-waveguide directional couplers

Liang

Soref

et al. 2015

Appl. Opt.

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Theoretical modeling and numerical simulation have been performed at λ=2100 nm on silicon-on-insulator channel-waveguide directional couplers in which the outer two Si waveguides are passive and the central waveguide(s) are electro-optical (EO) "islands." The EO channel(s) utilize a 10 nm layer of Ge2Sb2Te5 phase-change-material sited at midlevel of a doped Si channel. A voltage-driven phase change produces a large change in the effective index of the TE(o) and TM(o) modes, thereby inducing crossbar 2×2 switching. A mode-matching method is employed to estimate EO switching performance in the limit of strong interguide coupling. Low-loss switching is predicted for cross-to-bar and bar-to-cross coupling lengths. These "self-holding" switches had active lengths of 500-1000 μm, which are shorter than those in couplers relying upon free-carrier injection. The four-waveguide devices had lower cross talk but higher loss than the three-waveguide devices. For the crystalline phase we sometimes used an active length that was smaller than that for the amorphous phase.

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Section: Comparison and Conclusionmentioning

confidence: 87%

Electro-optical phase-change 2 × 2 switching using three- and four-waveguide directional couplers

Liang

Soref

et al. 2015

Appl. Opt.

View full text Add to dashboard Cite

show abstract

Organic Electro-optic Materials and Devices: Molecular Engineering Driving Device Performance and Technology Innovation

Abstract: Electro-optic polymers have developed dramatically, with commercially available materials exhibiting EO coefficients > 250pm/V with excellent stability. This has resulted in low voltage (< 1V), ultrahigh bandwidth EO modulators and integration with silicon photonics is emerging.

Cited by 1 publication

References 7 publications

Electro-optical phase-change 2 × 2 switching using three- and four-waveguide directional couplers

Electro-optical phase-change 2 × 2 switching using three- and four-waveguide directional couplers

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