Results 11 to 20 of about 22,890 (166)

High-Q-Factor Tunable Silica-Based Microring Resonators

open access: yesPhotonics, 2021
A high-Q-factor tunable silica-based microring resonator (MRR) is demonstrated. To meet the critical-coupling condition, a Mach–Zehnder interferometer (MZI) as the tunable coupler was integrated with a racetrack resonator.
Yue-Xin Yin   +8 more
doaj   +1 more source

Spiral Waveguides on Germanium-on-Silicon Nitride Platform for Mid-IR Sensing Applications

open access: yesIEEE Photonics Journal, 2018
Spiral waveguides on a new germanium-on-silicon nitride (GON) platform with a wide transparency and a large core-clad index contrast for mid-infrared (mid-IR) sensing applications are demonstrated. Spiral waveguide sensors with a low bending loss on this
Wei Li   +9 more
doaj   +1 more source

A Compact Ultrabroadband Polarization Beam Splitter Utilizing a Hybrid Plasmonic Y-Branch

open access: yesIEEE Photonics Journal, 2016
A compact and ultrabroadband polarization beam splitter (PBS) utilizing a hybrid plasmonic Y-branch (HPYB) on a silicon-on-insulator (SOI) platform is proposed and numerically demonstrated. The HPYB consists of a vertical hybrid plasmonic waveguide (HPW)
Ting Hu   +8 more
doaj   +1 more source

Fabrication of Low-Cost Multiwavelength Laser Arrays for OLTs in WDM-PONs by Combining the SAG and BIG Techniques

open access: yesIEEE Photonics Journal, 2015
We present the fabrication of a low-cost multiwavelength laser array monolithically integrated with a passive optical combiner for optical line terminals (OLTs) in wavelength-division multiplexing (WDM) passive optical networks (PONs).
Liangshun Han   +6 more
doaj   +1 more source

Device equivalence in integrated optics [PDF]

open access: yesJournal of Lightwave Technology, 1995
The concept of device equivalence is introduced. In equivalent devices, the light propagation can be described by identically evolving modal expansions, resulting in identical power transfer ratios. By first applying this concept to a z-invariant structure with a low refractive-index contrast it is shown how a normalized coordinate space can be defined
Berends, J.H.   +3 more
openaire   +2 more sources

Performance Analysis of a Broadband Second-Order Mode Converter Based on Multimode Interference Coupler and Phase Shifter

open access: yesIEEE Photonics Journal, 2015
A novel mode converter with broad bandwidth, high mode conversion efficiency, and large fabrication tolerance is proposed and fabricated on a silicon-on-insulator (SOI) platform.
Jifang Qiu   +5 more
doaj   +1 more source

Analysis of OAM Mode Purity of Integrated Optical Vortex Beam Emitters

open access: yesIEEE Photonics Journal, 2017
A theoretical analysis is presented to investigate the orbital angular momentum (OAM) mode purity of microring-resonator-based integrated optical vortex emitters.
Changzheng Sun   +8 more
doaj   +1 more source

A Bias Drift Suppression Method Based on ICELMD and ARMA-KF for MEMS Gyros

open access: yesMicromachines, 2022
The applications of Micro-Electro-Mechanical-System (MEMS) gyros in inertial navigation system is gradually increasing. However, the random drift of gyro deteriorates the system performance which restricting the applications of high precision. We propose
Lihui Feng   +6 more
doaj   +1 more source

A Compact Low-Power 320-Gb/s WDM Transmitter Based on Silicon Microrings

open access: yesIEEE Photonics Journal, 2014
We demonstrate a compact and low-power wavelength-division multiplexing transmitter near a 1550-nm wavelength using silicon microrings. The transmitter is implemented on a silicon-on-insulator photonics platform with a compact footprint of 0.5 mm2.
Ran Ding   +10 more
doaj   +1 more source

Broadband high-efficiency near-infrared graphene phase modulators enabled by metal–nanoribbon integrated hybrid plasmonic waveguides

open access: yesNanophotonics, 2021
The phase modulator is a key component in optical communications for its phase modulation functions. In this paper, we numerically demonstrate a variety of ultra-compact high-efficiency graphene phase modulators (GPMs) based on metal–nanoribbon ...
Ye Longfang   +5 more
doaj   +1 more source

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