Low Loss Hybrid Dielectric-Metal-Dielectric Waveguides for Sub-Micron Mode Confinement and Efficient Directional Coupling

2012 ◽  
Vol 476-478 ◽  
pp. 839-842
Author(s):  
Mo Yang ◽  
Jin Cheng Song
Keyword(s):  
Propagation Loss ◽  
Geometrical Parameters ◽  
Dielectric Waveguides ◽  
The Finite Element Method ◽  
Low Loss ◽  
Electro Optic ◽  
Integrated Optical ◽  
Integrated Optical Devices ◽  
Mode Size ◽  
High Dielectric

In this paper, we present the design of a novel hybrid dielectric-metal-dielectric waveguide, which consists of a metal stripe sandwiched between low-high dielectric layers. Its modal characteristics are investigated using the finite element method at the telecom wavelength. Simulations show that the dielectric contrast near the metal stripe results in a strongly confined hybrid plasmonic mode with sub-micron mode size and low propagation loss. The effects of geometrical parameters are analyzed systematically and the properties of directional couplers based on such hybrid waveguide are also investigated. The proposed structure could be useful candidates for various integrated optical devices and enable many applications such as electro-optic modulation, switching, sensing and more.

scholarly journals Low-Loss Polymer-Based Ring Resonator for Resonant Integrated Optical Gyroscopes

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Guang Qian ◽  
Jie Tang ◽  
Xiao-Yang Zhang ◽  
Ruo-Zhou Li ◽  
Yu Lu ◽  
...  
Keyword(s):  
Ring Resonator ◽  
Propagation Loss ◽  
Geometrical Parameters ◽  
Navigation Systems ◽  
Sensing Element ◽  
Low Loss ◽  
Optical Gyroscope ◽  
Medium Resolution ◽  
Integrated Optical ◽  
Waveguide Ring

Waveguide ring resonator is the sensing element of resonant integrated optical gyroscope (RIOG). This paper reports a polymer-based ring resonator with a low propagation loss of about 0.476 dB/cm for RIOG. The geometrical parameters of the waveguide and the coupler of the resonator were optimally designed. We also discussed the optical properties and gyroscope performance of the polymer resonator which shows a high quality factor of about 105. The polymer-based RIOG exhibits a limited sensitivity of less than 20 deg/h for the low and medium resolution navigation systems.

Low loss GeO2 doped silica waveguides for large scale integrated optical devices

1990 ◽  
Author(s):  
YASUJI OHMORI ◽  
TOSHIMI KOMINATO ◽  
HISAAKI OKAZAKI ◽  
MITSUHO YASU
Keyword(s):  
Large Scale ◽  
Optical Devices ◽  
Low Loss ◽  
Integrated Optical ◽  
Integrated Optical Devices

scholarly journals Record Purcell factors in ultracompact hybrid plasmonic ring resonators

2019 ◽  
Vol 5 (8) ◽  
pp. eaav1790 ◽  
Author(s):  
Y. Su ◽  
P. Chang ◽  
C. Lin ◽  
A. S. Helmy
Keyword(s):  
Long Range ◽  
Propagation Loss ◽  
Ring Resonators ◽  
Ohmic Loss ◽  
Plasmonic Waveguides ◽  
Purcell Factor ◽  
Experimental Realization ◽  
Integrated Optical ◽  
Integrated Optical Devices ◽  
Mode Area

For integrated optical devices and traveling-wave resonators, realistic use of the superior wave-matter interaction offered by plasmonics is impeded by ohmic loss, which increases rapidly with mode volume reduction. In this work, we report composite hybrid plasmonic waveguides (CHPWs) that are not only capable of guiding subwavelength optical mode with long-range propagation but also unrestricted by stringent requirements in structural, material, or modal symmetry. In these asymmetric CHPWs, the versatility afforded by coupling dissimilar plasmonic modes provides improved fabrication tolerance and more degrees of device design optimization. Experimental realization of CHPWs demonstrates propagation loss and mode area of 0.03 dB/μm and 0.002 μm2, corresponding to the smallest combination among long-range plasmonic structures reported to date. CHPW ring resonators with 2.5-μm radius were realized with record Purcell factor compared with existing plasmonic and dielectric resonators of similar radii.

scholarly journals Design of Surface Plasmon Nanolaser Based on MoS2

2018 ◽  
Vol 8 (11) ◽  
pp. 2110 ◽  
Author(s):  
Litu Xu ◽  
Fang Li ◽  
Lai Wei ◽  
Jianxin Zhou ◽  
Shuai Liu
Keyword(s):  
High Field ◽  
Electric Field Distribution ◽  
Propagation Loss ◽  
Comsol Multiphysics ◽  
Lasing Threshold ◽  
Optimal Parameters ◽  
The Finite Element Method ◽  
Low Loss ◽  
Low Threshold ◽  
Simulation Results

The paper has proposed a new structure based on MoS2. The electric field distribution, the locality and the loss of the mode, and the threshold under different geometric shapes and parameters are investigated using COMSOL Multiphysics software, based on the finite element method. The different influenced degree of each component is also analyzed. Simulation results reveal that this kind of nanolaser has a low loss and high field confinement ability, the radius of CdS and Ag make a major contribution to the low loss and low threshold, and field confinement ability is mainly affected by the height of air gap. Under optimal parameters, effective propagation loss is only 0.00013, and the lasing threshold can be as low as 0.11 μm−1. The results provide theory and technique support to the field of new nanolaser design.

Ion Beam Sputter Deposition Of Ferroelectric Oxide Thin Films

1991 ◽  
Vol 223 ◽  
Author(s):  
Thomas M. Graettinger ◽  
O. Auciello ◽  
M. S. Ameen ◽  
H. N. Al-Shareef ◽  
K. Gifford ◽  
...  
Keyword(s):  
Thin Films ◽  
Lead Zirconate Titanate ◽  
Growth Parameters ◽  
Ion Beam ◽  
Lead Zirconate ◽  
Electro Optic ◽  
Integrated Optical ◽  
Pzt Films ◽  
Ion Beam Sputter Deposition ◽  
Ferroelectric Oxide

ABSTRACTFerroelectric oxide films have been studied for their potential application as integrated optical materials and nonvolatile memories. Electro-optic properties of potassium niobate (KNbO3) thin films have been measured and the results correlated to the microstructures observed. The growth parameters necessary to obtain single phase perovskite lead zirconate titanate (PZT) thin films are discussed. Hysteresis and fatigue measurements of the PZT films were performed to determine their characteristics for potential memory devices.

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