Optical microtube cavities monolithically integrated on photonic chips for optofluidic sensing

Microtubular optical resonators are monolithically integrated on photonic chips to demonstrate optofluidic functionality. Due to the compact subwavelength-thin tube wall and a well-defined nanogap between polymer photonic waveguides and the microtube, excellent optical coupling with extinction ratio...

Full description

Saved in:
Bibliographic Details
Published in:Optics letters 2017-02, Vol.42 (3), p.486-489
Main Authors: Madani, Abbas, Harazim, Stefan M, Bolaños Quiñones, Vladimir A, Kleinert, Moritz, Finn, Andreas, Ghareh Naz, Ehsan Saei, Ma, Libo, Schmidt, Oliver G
Format: Article
Language:English
Subjects:
Chips
Droplets
Liquids
Nanostructure
Optical resonators
Photonics
Resonators
Walls
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Microtubular optical resonators are monolithically integrated on photonic chips to demonstrate optofluidic functionality. Due to the compact subwavelength-thin tube wall and a well-defined nanogap between polymer photonic waveguides and the microtube, excellent optical coupling with extinction ratios up to 32 dB are observed in the telecommunication relevant wavelength range. For the first time, optofluidic applications of fully on-chip integrated microtubular systems are investigated both by filling the core of the microtube and by the microtube being covered by a liquid droplet. Total shifts over the full free spectral range are observed in response to the presence of the liquid medium in the vicinity of the microtube resonators. This work provides a vertical coupling scheme for optofluidic applications in monolithically integrated so-called "lab-in-a-tube" systems.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.42.000486