The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Ray T Chen - One of the best experts on this subject based on the ideXlab platform.
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coupling enhanced dual ito layer electro absorption modulator in silicon photonics
arXiv: Applied Physics, 2019Co-Authors: Mohammad H Tahersima, Ray T Chen, Yaliang Gui, Shuai Sun, Hao Wang, Rubab Amin, Hamed Dalir, Mario Miscuglio, Volker J SorgerAbstract:Electro-optic signal modulation provides a key functionality in modern technology and information networks. Photonic integration has enabled not only miniaturizing photonic components, but also provided performance improvements due to co-design addressing both electrical and optical device rules. However, the millimeter-to-centimeter large footprint of many foundry-ready photonic electro-optic Modulators significantly limits on-chip scaling density. To address these limitations, here we experimentally demonstrate a coupling-enhanced electro-absorption modulator by heterogeneously integrating a novel dual-gated indium-tin-oxide (ITO) phase-shifting tunable absorber placed at a silicon directional coupler region. Our experimental modulator shows a 2 dB extinction ratio for a just 4 um short device at 4 volt bias. Since no material nor optical resonances are deployed, this device shows spectrally broadband operation as demonstrated here across the entire C-band. In conclusion we demonstrate a modulator utilizing strong index-change from both real and imaginary part of active material enabling compact and high-performing Modulators using semiconductor foundry-near materials.
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polymer based hybrid integrated photonic devices for silicon on chip modulation and board level optical interconnects
arXiv: Optics, 2014Co-Authors: Xingyu Zhang, Amir Hosseini, Xiaohui Lin, Harish Subbaraman, Ray T ChenAbstract:The accelerating increase in information traffic demands the expansion of optical access network systems that require cost reduction of optical and photonic components. Low cost, ease of fabrication, and integration capabilities of low optical-loss polymers make them attractive for photonic applications. In addition to passive wave-guiding components, electro-optic (EO) polymers consisting of a polymeric matrix doped with organic nonlinear chromophores have enabled wide-RF-bandwidth and low-power optical Modulators. Beside board level passive and active optical components, compact on-chip Modulators (a few 100 micronmeters to a few millimeters) have been made possible by hybrid integration of EO polymers onto the silicon platform. This paper summarizes some of the recent progress in polymer based optical Modulators and interconnects. A highly linear, broadband directional coupler modulator for use in analog optical links and compact, and low-power silicon/polymer hybrid slot photonic crystal waveguide Modulators for on chip applications are presented. Recently, cost-effective roll-to-roll fabrication of electronic and photonic systems on flexible substrates has been gaining interest. A low-cost imprinted/ink-jet-printed Mach-Zehnder modulator and board-to-board optical interconnects using microlens integrated 45-degree mirror couplers compatible with the roll-to-roll fabrication platforms are also presented.
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polymer based hybrid integrated photonic devices for silicon on chip modulation and board level optical interconnects
IEEE Journal of Selected Topics in Quantum Electronics, 2013Co-Authors: Xingyu Zhang, Amir Hosseini, Xiaohui Lin, Harish Subbaraman, Ray T ChenAbstract:The accelerating increase in information traffic demands the expansion of optical access network systems that require the cost reduction of optical and photonic components. Low cost, ease of fabrication, and integration capabilities of low optical-loss polymers make them attractive for photonic applications. In addition to passive wave-guiding components, electro-optic (EO) polymers consisting of a polymeric matrix doped with organic nonlinear chromophores have enabled wide-RF-bandwidth and low-power optical Modulators. Beside board level passive and active optical components, compact on-chip Modulators (a few 100 μm to a few millimeters) have been made possible by hybrid integration of EO polymers onto the silicon platform. This paper summarizes some of the recent progress in polymer-based optical Modulators and interconnects. A highly linear, broadband directional coupler modulator for use in analog optical links and compact, and low-power silicon/polymer hybrid slot photonic crystal waveguide Modulators for on chip applications are presented. Recently, cost-effective roll-to-roll fabrication of electronic and photonic systems on flexible substrates has been gaining interest. A low-cost imprinted/ink-jet-printed Mach-Zehnder modulator and board-to-board optical interconnects using microlens integrated 45° mirror couplers compatible with the roll-to-roll fabrication platforms are also presented.
Yasufumi Enami - One of the best experts on this subject based on the ideXlab platform.
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enhanced conductivity of sol gel silica cladding for efficient poling in electro optic polymer tio2 vertical slot waveguide Modulators
Optics Express, 2014Co-Authors: Yasufumi Enami, Youssef JouaneAbstract:We report the enhanced conductivity of sol-gel silica under-cladding for efficient poling of electro-optic (EO) polymer in a hybrid EO polymer/TiO2 vertical slot waveguide modulator. The electrical volume conductivity of sol-gel silica cladding increases approximately 30 times when the calcining time of the cladding layer is critically reduced to 45 minutes, which increases the in-device EO coefficient of the 600-nm-thick EO polymer film in Modulators and reduces the lower halfwave voltage (Vπ) of the Modulators. The lowest driving voltage (Vπ) of the TiO2 slot waveguide modulator is 2.0 V for an electrode length (Le) of 10 mm and wavelength of 1550 nm (VπLe = 2.0 V·cm) for the low-index guest–host EO polymer SEO125. The optical propagation loss is reduced to 7 dB/cm.
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mesoporous sol gel silica cladding for hybrid tio 2 electro optic polymer waveguide Modulators
Optics Express, 2014Co-Authors: Yasufumi Enami, Yasuhisa KayabaAbstract:We report the efficient poling of an electro-optic (EO) polymer in a hybrid TiO2/electro-optic polymer multilayer waveguide modulator on mesoporous sol-gel silica cladding. The mesoporous sol-gel silica has nanometer-sized pores and a low refractive index of 1.24, which improves mode confinement in the 400-nm-thick EO polymer film in the Modulators and prevents optical absorption from the lower Au electrode, thereby resulting in a lower half-wave voltage of the Modulators. The half-wave voltage (Vπ) of the hybrid modulator fabricated on the mesoporous sol-gel silica cladding is 6.0 V for an electrode length (Le) of 5 mm at a wavelength of 1550 nm (VπLe product of 3.0 V·cm) using a low-index guest-host EO polymer (in-device EO coefficient of 75 pm/V).
Yasuhisa Kayaba - One of the best experts on this subject based on the ideXlab platform.
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mesoporous sol gel silica cladding for hybrid tio 2 electro optic polymer waveguide Modulators
Optics Express, 2014Co-Authors: Yasufumi Enami, Yasuhisa KayabaAbstract:We report the efficient poling of an electro-optic (EO) polymer in a hybrid TiO2/electro-optic polymer multilayer waveguide modulator on mesoporous sol-gel silica cladding. The mesoporous sol-gel silica has nanometer-sized pores and a low refractive index of 1.24, which improves mode confinement in the 400-nm-thick EO polymer film in the Modulators and prevents optical absorption from the lower Au electrode, thereby resulting in a lower half-wave voltage of the Modulators. The half-wave voltage (Vπ) of the hybrid modulator fabricated on the mesoporous sol-gel silica cladding is 6.0 V for an electrode length (Le) of 5 mm at a wavelength of 1550 nm (VπLe product of 3.0 V·cm) using a low-index guest-host EO polymer (in-device EO coefficient of 75 pm/V).
Xingyu Zhang - One of the best experts on this subject based on the ideXlab platform.
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polymer based hybrid integrated photonic devices for silicon on chip modulation and board level optical interconnects
arXiv: Optics, 2014Co-Authors: Xingyu Zhang, Amir Hosseini, Xiaohui Lin, Harish Subbaraman, Ray T ChenAbstract:The accelerating increase in information traffic demands the expansion of optical access network systems that require cost reduction of optical and photonic components. Low cost, ease of fabrication, and integration capabilities of low optical-loss polymers make them attractive for photonic applications. In addition to passive wave-guiding components, electro-optic (EO) polymers consisting of a polymeric matrix doped with organic nonlinear chromophores have enabled wide-RF-bandwidth and low-power optical Modulators. Beside board level passive and active optical components, compact on-chip Modulators (a few 100 micronmeters to a few millimeters) have been made possible by hybrid integration of EO polymers onto the silicon platform. This paper summarizes some of the recent progress in polymer based optical Modulators and interconnects. A highly linear, broadband directional coupler modulator for use in analog optical links and compact, and low-power silicon/polymer hybrid slot photonic crystal waveguide Modulators for on chip applications are presented. Recently, cost-effective roll-to-roll fabrication of electronic and photonic systems on flexible substrates has been gaining interest. A low-cost imprinted/ink-jet-printed Mach-Zehnder modulator and board-to-board optical interconnects using microlens integrated 45-degree mirror couplers compatible with the roll-to-roll fabrication platforms are also presented.
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polymer based hybrid integrated photonic devices for silicon on chip modulation and board level optical interconnects
IEEE Journal of Selected Topics in Quantum Electronics, 2013Co-Authors: Xingyu Zhang, Amir Hosseini, Xiaohui Lin, Harish Subbaraman, Ray T ChenAbstract:The accelerating increase in information traffic demands the expansion of optical access network systems that require the cost reduction of optical and photonic components. Low cost, ease of fabrication, and integration capabilities of low optical-loss polymers make them attractive for photonic applications. In addition to passive wave-guiding components, electro-optic (EO) polymers consisting of a polymeric matrix doped with organic nonlinear chromophores have enabled wide-RF-bandwidth and low-power optical Modulators. Beside board level passive and active optical components, compact on-chip Modulators (a few 100 μm to a few millimeters) have been made possible by hybrid integration of EO polymers onto the silicon platform. This paper summarizes some of the recent progress in polymer-based optical Modulators and interconnects. A highly linear, broadband directional coupler modulator for use in analog optical links and compact, and low-power silicon/polymer hybrid slot photonic crystal waveguide Modulators for on chip applications are presented. Recently, cost-effective roll-to-roll fabrication of electronic and photonic systems on flexible substrates has been gaining interest. A low-cost imprinted/ink-jet-printed Mach-Zehnder modulator and board-to-board optical interconnects using microlens integrated 45° mirror couplers compatible with the roll-to-roll fabrication platforms are also presented.
John E. Bowers - One of the best experts on this subject based on the ideXlab platform.
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high speed hybrid silicon evanescent electroabsorption modulator
Optics Express, 2008Co-Authors: Hui-wen Chen, John E. BowersAbstract:A new way to make high speed Modulators using Si waveguides is demonstrated. The hybrid silicon evanescent electroabsorption modulator with offset AlGaInAs quantum wells has an extinction ratio over 10dB and modulation bandwidth of 10GHz. The modulator has a clean open eye at 10Gb/s with sub-volt drive.
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a dynamic measurement technique for third order distortion in optical phase Modulators
IEEE Photonics Technology Letters, 2007Co-Authors: Matthew N. Sysak, L A Johansson, Jonathan Klamkin, L A Coldren, John E. BowersAbstract:A novel two-tone measurement technique for characterizing distortion in optical phase Modulators is proposed and demonstrated. The technique is used to characterize an InGaAsP-InP modulator in a monolithically integrated receiver. Results for forward and reverse bias conditions in the modulator show a phase IP3 of 7.2pi and 0.97pi rad, respectively