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Implementation of a Reference Interferometer for Nanodetection

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

Integrated planar optical waveguide interferometer biosensors: a comparative review.

Peter Kozma¹, Florian Kehl², Eva Ehrentreich-Förster¹

¹Fraunhofer Institute for Biomedical Engineering (IBMT), Am Mühlenberg 13, 14476 Potsdam-Golm, Germany.

Biosensors & Bioelectronics

|March 25, 2014

Summary

This summary is machine-generated.

Integrated planar optical waveguide interferometer biosensors offer label-free detection by measuring refractive index changes. This review covers two decades of advancements in these sensitive, miniaturized devices for point-of-care applications.

Keywords:

Biosensor Common- and double path interferometer Evanescent field Label-free detection Waveguide

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Area of Science:

Optoelectronics
Biosensing
Interferometry

Background:

Integrated planar optical waveguide interferometer biosensors combine evanescent field sensing with optical phase difference measurement.
These sensors detect changes in refractive index near the surface, inducing phase shifts in guided light modes.

Purpose of the Study:

To review the most relevant developments in integrated planar optical waveguide interferometer biosensors over the past twenty years.
To categorize these advancements into common-path and double-path waveguide interferometers.
To compare diverse sensor designs, highlighting their advantages and disadvantages.

Main Methods:

Review of literature on integrated planar optical waveguide interferometer biosensors from the last two decades.
Categorization of sensor designs into common-path and double-path interferometers.
Comparative analysis of different sensor approaches and families.

Main Results:

Several advantageous sensor types have emerged, offering label-free, non-destructive detection.
These biosensors exhibit excellent sensitivity, low detection limits, cost-effective production, and miniaturization capabilities.
Advancements facilitate low reagent consumption, short analysis times, and point-of-care applications.

Conclusions:

Integrated planar optical waveguide interferometer biosensors have significantly evolved over the past twenty years.
The review provides a historical perspective and contrasts the benefits and drawbacks of various designs.
These developments pave the way for widespread adoption in diagnostics and other fields.