Periodic waveguide structures for on-chip modulation and sensing The SWG waveguide ring resonator has a bulk sensitivity more than 400nm/RIU, which is much higher than its strip waveguide counterpart. Furthermore, its surface sensitivity is relatively independent of the thickness of analytes accumulated on its surface. Towards a millivolt optical modulator with nano-slot waveguides Using a slot waveguide based electro-optic modulator geometry, we have previously demonstrated ring resonators with substantially better tunability (in Gigahertz per volt) than those built with comparable electrooptic materials in conventional geometries [16]. Plate-slot polymer waveguide modulator on silicon-on-insulator
Periodic waveguide structures for on-chip modulation and sensing
We demonstrate a ring-resonator modulator based on a silicon-polymer hybrid slot waveguide with a tunability of 12.7 pm/V at RF speeds and a bandwidth of 1 GHz, for optical wavelengths near 1550 nm. Ultra-high-speed graphene optical modulator design based Ultra-high-speed graphene optical modulator design based on tight field confinement in a slot waveguide Goran Kovacevic1*, Christopher Phare2, Sze Y. Set1, Michal Lipson2, and Shinji Yamashita1* 1Research Center for Advanced Science and Technology (RCAST), University of Tokyo, Meguro, Tokyo 153-8904, Japan 2School of Engineering and Applied Science, Columbia University, … Slot-waveguide - Wikipedia In 2006, the slot-waveguide approach was extended to the terahertz frequency band by researchers at RWTH Aachen University. Researchers at the California Institute of Technology also demonstrated that a slot waveguide, in combination with nonlinear electrooptic polymers, could be used to build ring modulators with exceptionally high tunability. Slot waveguide microring modulator on InP membrane
Silicon-polymer hybrid slot waveguide ring-resonator modulator ...
A 130 GHz Electro-Optic Ring Modulator with Double-Layer The optical absorption coefficient of graphene will change after injecting carriers. Based on this principle, a high-speed double-layer graphene electro-optic modulator with a ring resonator structure was designed in this paper. From the numerical simulations, we designed a modulator. Its optical bandwidth is larger than 130 GHz, the switching energy is 0.358 fJ per bit, and the driven voltage Organic Electro-Optics | Jen Research Group Organic Electro-Optics Introduction. The Jen group’s goal in the research of organic electro-optics is to advance the science and engineering of organic second-order nonlinear optical materials and their hybrid systems, enabling the development of “transformative” electro-optic (EO) technologies for ultrafast information processing. Enhanced temperature sensing with liquid-crystal filling
on tight field confinement in a slot waveguide Goran Kovacevic1*, Christopher Phare2, Sze Y. Set1, Michal Lipson2, ... The highest reported bandwidth is 30GHz on a ring resonator structure;15) however, in order to properly utilize graphene in silicon photonic devices the bandwidth should cross the 100GHz mark. 16) There has been no experimental report of a 100GHz graphene modulator; such modulator designs have been mentioned in the literature by Meng et al.,10) where less conservative ...
Cascaded uncoupled dual-ring modulator - Columbia … time in the dual-ring modulator is reduced, with increased modulation quality. The inter-ring detuning-dependent photon dynamics, Q factor, extinction ratio, and optical modulation amplitude of two cascaded silicon ring resonators are studied and compared with that of a single-ring modulator. Experimentally measured eye diagrams,
Organic Electro-Optics | Jen Research Group
Final Program - Group IV Photonics Aug 29, 2018 ... Microring Resonator Modulator, Wenjing Tian, Lei Zhang, Chinese .... electro- optic modulator that utilizes a doped-Si slot waveguide is. A three-dimensional photonic topological insulator using a two ...
Low-index slot serves as waveguide | Laser Focus World A high refractive-index contrast confines light. The eigenmode of the light in the low-index slot results in a high electric field within the slot and a low electric field in the high-index materials bordering the slot. A ring resonator has been made that exploits this effect (inset). Click here to enlarge image Low-voltage and low-loss silicon modulator based on carrier ... Abstract: We optimized a silicon ring resonator modulator embedding a low-voltage and low-loss vertical Capacitive phase shifter. It exhibits an extinction ratio of 10 dB at 2 V pp, with only 1.8 dB insertion losses. Silicon-on-sapphire ring resonators operate at a 5.5 μm ... Researchers at the University of Washington (Seattle, WA) and Cornell University (Ithaca, NY) have created the first silicon-waveguide ring resonators for wavelengths between 5.4 and 5.6 μm, opening up a new region forring-resonator applications such as biosensing and modulation.