Photonic molecules for application in silicon-on-insulator optical sensors

Luis A. M. Barea; Mario C. M. M. Souza; Andre L. Moras; Alvaro R. G. Catellan; Giuseppe A. Cirino; Antonio A. G. Von Zuben; Jose W. M. Bassani; Newton C. Frateschi

doi:10.1117/12.2287844

22 February 2018 Photonic molecules for application in silicon-on-insulator optical sensors

Luis A. M. Barea, Mario C. M. M. Souza, Andre L. Moras, Alvaro R. G. Catellan, Giuseppe A. Cirino, Antonio A. G. Von Zuben, Jose W. M. Bassani, Newton C. Frateschi

Author Affiliations +

Proceedings Volume 10537, Silicon Photonics XIII; 105371B (2018) https://doi.org/10.1117/12.2287844
Event: SPIE OPTO, 2018, San Francisco, California, United States

Abstract

Optical sensors based on integrated photonics have experienced impressive advancements in the past few decades and represent one of the main sensing solutions in many areas including environmental sensing and medical diagnostics. In this context, optical microcavities are extensively employed as refractive index (RI) sensors, providing sharp optical resonances that allow the detection of very small variations in the surrounding RI. With increased sensitivity, however, the device is subjected to environmental perturbations that can also change the RI, such as temperature variations, and therefore compromise their reliability. In this work, we present the concept and experimental realization of a photonic sensor based on coupled microcavities or Photonic Molecules (PM) in which only one cavity is exposed to the sensing solution, allowing a differential measurement of the RI change. The device consists of an exposed 5-μm radius microdisk resonator coupled to an external clad microring resonator fabricated on silicon-on-insulator (SOI) platform. This design allows good sensitivity (26 nm/RIU) for transverse electrical mode (TE-mode) in a compact footprint (40 × 40 μm²), representing a good solution for real-life applications in which measurement conditions are not easily controllable.

Citation Download Citation

Luis A. M. Barea, Mario C. M. M. Souza, Andre L. Moras, Alvaro R. G. Catellan, Giuseppe A. Cirino, Antonio A. G. Von Zuben, Jose W. M. Bassani, and Newton C. Frateschi "Photonic molecules for application in silicon-on-insulator optical sensors", Proc. SPIE 10537, Silicon Photonics XIII, 105371B (22 February 2018); https://doi.org/10.1117/12.2287844

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available