Comparison and analysis of phase change materials-based reconfigurable silicon photonic directional couplers

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F22%3A39919295" target="_blank" >RIV/00216275:25310/22:39919295 - isvavai.cz</a>

Výsledek na webu

<a href="https://opg.optica.org/ome/fulltext.cfm?uri=ome-12-2-606&id=468519" target="_blank" >https://opg.optica.org/ome/fulltext.cfm?uri=ome-12-2-606&id=468519</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/OME.447289" target="_blank" >10.1364/OME.447289</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison and analysis of phase change materials-based reconfigurable silicon photonic directional couplers

Popis výsledku v původním jazyce

The unique optical properties of phase change materials (PCMs) can be exploited to develop efficient reconfigurable photonic devices. Here, we design, model, and compare the perthrmance of programmable 1 x 2 optical couplers based on: Ge2Sb2Te5, Ge2Sb2Se4Te1, Sb2Se3, and Sb2S3 PCMs. Once programmed, these devices are passive, which can reduce the overall energy consumed compared to thermo-optic or electro-optic reconfigurable devices. Of all the PCMs studied, our ellipsometry refractive index measurements show that Sb2S3 has the lowest absorption in the telecommunications wavelength band. Moreover, Sb2S3 -based couplers show the best overall performance, with the lowest insertion losses in both the amorphous and crystalline states. We show that by growth crystallization tuning at least four different coupling ratios can be reliably programmed into the Sb2S3 directional couplers. We used this effect to design a 2-bit tuneable Sb2S3 directional coupler with a dynamic range close to 32 dB. The bit-depth of the coupler appears to be limited by the crystallization stochasticity. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Název v anglickém jazyce

Comparison and analysis of phase change materials-based reconfigurable silicon photonic directional couplers

Popis výsledku anglicky

The unique optical properties of phase change materials (PCMs) can be exploited to develop efficient reconfigurable photonic devices. Here, we design, model, and compare the perthrmance of programmable 1 x 2 optical couplers based on: Ge2Sb2Te5, Ge2Sb2Se4Te1, Sb2Se3, and Sb2S3 PCMs. Once programmed, these devices are passive, which can reduce the overall energy consumed compared to thermo-optic or electro-optic reconfigurable devices. Of all the PCMs studied, our ellipsometry refractive index measurements show that Sb2S3 has the lowest absorption in the telecommunications wavelength band. Moreover, Sb2S3 -based couplers show the best overall performance, with the lowest insertion losses in both the amorphous and crystalline states. We show that by growth crystallization tuning at least four different coupling ratios can be reliably programmed into the Sb2S3 directional couplers. We used this effect to design a 2-bit tuneable Sb2S3 directional coupler with a dynamic range close to 32 dB. The bit-depth of the coupler appears to be limited by the crystallization stochasticity. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Optical Materials Express

ISSN

2159-3930

e-ISSN

2159-3930

Svazek periodika

12

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

606-621

Kód UT WoS článku

000750922700011

EID výsledku v databázi Scopus

2-s2.0-85123303451