Gallium Arsenide Modulator Technology

Walker, Robert G.; Heaton, John

doi:10.1201/b11444-13

Cited by 3 publications

(4 citation statements)

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“…Thus, high‐speed modulation can be readily achieved with lumped electrodes . It has been proved that without 50 Ω termination, lumped electrodes can effectively reduce the power consumption compared to traveling wave electrodes . To reduce the reflection of RF signals, ground‐signal‐ground (GSG) electrodes are designed and optimized with Ansys HFSS to provide 50 Ω impedance match with GSG RF probes.…”

Section: Methodsmentioning

confidence: 99%

“…[54] It has been proved that without 50 Ω termination, lumped electrodes can effectively reduce the power consumption compared to traveling wave electrodes. [55,56] To reduce the reflection of RF signals, ground-signal-ground (GSG) electrodes are designed and optimized with Ansys HFSS to provide 50 impedance match with GSG RF probes. As shown in Figure 2b, the central width, gold thickness, and gap are 25 μm, 2.4 μm, and 4 μm respectively.…”

Section: Methodsmentioning

confidence: 99%

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High‐Speed Modulator Based on Electro‐Optic Polymer Infiltrated Subwavelength Grating Waveguide Ring Resonator

Pan

Chung

et al. 2018

Laser & Photonics Reviews

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Silicon‐organic hybrid integrated devices show great potential in high‐speed optical interconnects and sensors. In this paper, a high‐speed modulator based on an electro‐optic (EO) polymer (SEO125) infiltrated sub‐wavelength grating (SWG) waveguide ring resonator is presented. The core of the SWG waveguide consists of periodically arranged silicon pillars along the light propagation direction, which provides large mode volume overlap with EO polymer. The optimized SWG shows a mode volume overlap of 36.2% with a silicon duty cycle of 0.7. The 3‐dB modulation bandwidth of the fabricated modulator is measured to be larger than 40 GHz occupying an area of 70 μm x 29 μm, which is the largest bandwidth and the most compact footprint that has been demonstrated for ring resonators on the silicon‐organic hybrid platform.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

High‐Speed Modulator Based on Electro‐Optic Polymer Infiltrated Subwavelength Grating Waveguide Ring Resonator

Pan

Chung

et al. 2018

Laser & Photonics Reviews

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“…Polymer-based passive and active photonic devices have been extensively used in various applications, including communication networks [1][2][3][4][5][6][7][8][9][10][11][12], optical backplanes and interchip interconnects [13][14][15][16][17][18][19][20][21], sensors [22][23][24][25][26][27][28][29][30][31][32], etc. Low-cost and high-efficiency packaging of these devices is crucial in order to enable an economically viable market.…”

Section: Introductionmentioning

confidence: 99%

Quasi-vertical tapers for polymer-waveguide-based interboard optical interconnects

et al. 2015

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A mode transformer based on the quasi-vertical taper is designed to enable high coupling efficiency for interboardlevel optical interconnects involving single-mode polymer waveguides and standard single-mode fibers. A triangular region fabricated above the waveguide is adopted to adiabatically transform the mode from the fiber into the polymer waveguide. The effects of the geometrical parameters of the taper, including width, height, tip width, etc., on the coupling efficiency are numerically investigated. Based on this, a quasi-vertical taper for the polymer rib waveguide system is designed, fabricated, and characterized. Coupling losses of 1.79 0.30 and 2.23 0.31 dB per coupler for the quasi-TM and quasi-TE mode, respectively, are measured across the optical communication C and L bands (1535 to 1610 nm). Low-cost packaging, leading to widespread utilization of polymeric photonic devices, is envisioned for optical interconnect applications.

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“…Among the different optical modulator technologies available such as polymer, III-V semiconductors, Silicon, the well-known Lithium Niobate (LN) offers the best trade-off in terms of performances, ease of use, and power handling capability [1][2][3][4][5][6][7][8][9]. The LN technology is still widely deployed within the current high data rate fibre optic communications networks.…”

Section: Introductionmentioning

confidence: 99%