scholarly journals Study of an Integration Platform Based on an Adiabatic Active-Layer Waveguide Connection for InP Photonic Device Integration Mirroring That of Heterogeneous Integration on Silicon

Photonics ◽  
2021 ◽  
Vol 8 (10) ◽  
pp. 433
Author(s):  
Changming Chen ◽  
Junyu Li ◽  
Chunxue Wang ◽  
Yingyan Huang ◽  
Daming Zhang ◽  
...  

In this work, a photonic device integration platform capable of integration of active-passive InP-based photonic devices without the use of material regrowth is introduced. The platform makes use of an adiabatic active-layer waveguide connection (ALWC) to move an optical beam between active and passive devices. The performance of this platform is analyzed using an example made up of four main sections: (1) a fiber coupling section for enabling vertical beam coupling from optical fiber into the photonic chip using a mode-matched surface grating with apodized duty cycles; (2) a transparent waveguide section for realizing passive photonic devices; (3) an adiabatic mode connection structure for moving the optical beam between passive and active device sections; and (4) an active device section for realizing active photonic devices. It is shown that the coupled surface grating, when added with a bottom gold reflector, can achieve a high chip-to-fiber coupling efficiency (CE) of 88.3% at 1550 nm. The adiabatic active-layer mode connection structure has an optical loss of lower than 1% (CE > 99%). The active device section can achieve an optical gain of 20 dB/mm with the use of only 3 quantum wells. The optimized structural parameters of the entire waveguide module are analyzed and discussed.

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 210
Author(s):  
Da Teng ◽  
Kai Wang

The waveguiding of terahertz surface plasmons by a GaAs strip-loaded graphene waveguide is investigated based on the effective-index method and the finite element method. Modal properties of the effective mode index, modal loss, and cut-off characteristics of higher order modes are investigated. By modulating the Fermi level, the modal properties of the fundamental mode could be adjusted. The accuracy of the effective-index method is verified by a comparison between the analytical results and numerical simulations. Besides the modal properties, the crosstalk between the adjacent waveguides, which determines the device integration density, is studied. The findings show that the effective-index method is highly valid for analyzing dielectric-loaded graphene plasmon waveguides in the terahertz region and may have potential applications in subwavelength tunable integrated photonic devices.


2021 ◽  
Author(s):  
Jijie Huang ◽  
Di Zhang ◽  
Zhimin Qi ◽  
Bruce Zhang ◽  
Haiyan Wang

Ag nanostructures exhibit extraordinary optical properties, which are important for photonic device integration. Here, we deposited Ag-LiNbO3 (LNO) nanocomposite thin films with Ag nanoparticles (NPs) embedded into LNO matrix, by...


2014 ◽  
Vol 26 (1) ◽  
pp. 70-73 ◽  
Author(s):  
Doris K. T. Ng ◽  
Qian Wang ◽  
Kim-Peng Lim ◽  
Jing Pu ◽  
Kun Tang ◽  
...  

2021 ◽  
Vol 119 (21) ◽  
pp. 211101
Author(s):  
Stephanie Bauer ◽  
Dongze Wang ◽  
Niklas Hoppe ◽  
Cornelius Nawrath ◽  
Julius Fischer ◽  
...  

2012 ◽  
Author(s):  
Valentin J. Dubois ◽  
Mikael Antelius ◽  
Hans Sohlström ◽  
Kristinn B. Gylfason

2008 ◽  
Vol 1071 ◽  
Author(s):  
Ari Laiho ◽  
Jayanta K. Baral ◽  
Himadri S. Majumdar ◽  
Daniel Tobjörk ◽  
Janne Ruokolainen ◽  
...  

AbstractIn this report we study the morphology and chemical composition of a nanocomposite memory device where the active device layer is sandwiched between two aluminum electrodes and consists of a nanocomposite of polystyrene (PS) and [6,6]-phenyl-C61 butyric acid methyl ester (PCBM). The morphology of the active layer is imaged both in plan-view and cross-sectional view by using transmission electron microscopy (TEM). We introduce two techniques to prepare the cross-sections from the active layer, namely, a conventional technique based on microtoming and secondly nanostructural processing with focused ion beam (FIB). Based on the morphology studies we deduce that within the used concentrations the PCBM forms spherical nanoscale clusters within the continuous PS matrix. The chemical composition of the device is determined by using X-ray photoelectron spectroscopy (XPS) and it shows that the thermal evaporation of the aluminum electrodes does not lead to observable inclusion of the aluminum into the active material layer.


Sign in / Sign up

Export Citation Format

Share Document