Narrowband Bragg filters based on subwavelength grating waveguides for silicon photonic sensing

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F20%3A00539264" target="_blank" >RIV/67985882:_____/20:00539264 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1364/OE.404364" target="_blank" >https://doi.org/10.1364/OE.404364</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1364/OE.404364" target="_blank" >10.1364/OE.404364</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Narrowband Bragg filters based on subwavelength grating waveguides for silicon photonic sensing

Popis výsledku v původním jazyce

Subwavelength grating (SWG) waveguides have been shown to provide enhanced light-matter interaction resulting in superior sensitivity in integrated photonics sensors. Narrowband integrated optical filters can be made by combining SWG waveguides with evanescently coupled Bragg gratings. In this paper, we assess the sensing capabilities of this novel filtering component with rigorous electromagnetic simulations. Our design is optimized for an operating wavelength of 1310 nm to benefit from lower water absorption and achieve narrower bandwidths than at the conventional wavelength of 1550 nm. Results show that the sensor achieves a sensitivity of 507 nm/RIU and a quality factor of 4.9 x 10(4), over a large dynamic range circumventing the free spectral range limit of conventional devices. Furthermore, the intrinsic limit of detection, 5.1 x 10(-5) RIU constitutes a 10-fold enhancement compared to state-of-the-art resonant waveguide sensors

Název v anglickém jazyce

Narrowband Bragg filters based on subwavelength grating waveguides for silicon photonic sensing

Popis výsledku anglicky

Subwavelength grating (SWG) waveguides have been shown to provide enhanced light-matter interaction resulting in superior sensitivity in integrated photonics sensors. Narrowband integrated optical filters can be made by combining SWG waveguides with evanescently coupled Bragg gratings. In this paper, we assess the sensing capabilities of this novel filtering component with rigorous electromagnetic simulations. Our design is optimized for an operating wavelength of 1310 nm to benefit from lower water absorption and achieve narrower bandwidths than at the conventional wavelength of 1550 nm. Results show that the sensor achieves a sensitivity of 507 nm/RIU and a quality factor of 4.9 x 10(4), over a large dynamic range circumventing the free spectral range limit of conventional devices. Furthermore, the intrinsic limit of detection, 5.1 x 10(-5) RIU constitutes a 10-fold enhancement compared to state-of-the-art resonant waveguide sensors

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

<a href="/cs/project/GA19-00062S" target="_blank" >GA19-00062S: Pokročilé funkcionality v subvlnových fotonických a plazmonických strukturách</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Optics Express

ISSN

1094-4087

e-ISSN

—

Svazek periodika

28

Číslo periodika v rámci svazku

25

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

15

Strana od-do

37971-37985

Kód UT WoS článku

000596707100071

EID výsledku v databázi Scopus

2-s2.0-85097333288