February 24, 2024
From PIC to probe
The resulting packaged miniature optical temperature sensor probe (right) and schematic with an exploded view illustrating the build-up of the sensor probe (left). Credit: The Authors doi: 10.1117/1.JOM.4.1.011005.

Similar to electronics, photonic circuits can be miniaturized onto a chip, leading to a so-called photonic integrated circuit (PIC). Although these developments are more recent than for electronics, this field is rapidly evolving. One of the main issues, however, is to turn such a PIC into a functional device. This requires optical packaging and coupling strategies to bring light into and get light out of the PIC.

For example, for , a connection needs to be made with optical fibers, which then transport the light pulses over long distances. Alternatively, the PIC could house an optical sensor which requires external light for its readout.

Since light on a PIC propagates in very tiny channels with sub-micrometer dimensions, called waveguides, this optical coupling is very challenging and requires careful alignment between the PIC and external components. The optical components are also very fragile so proper packaging of the PIC is vital to result in a reliable device.

The research team of Prof. Van Steenberge and Prof. Jeroen Missinne at Ghent University and imec is developing solutions to overcome the packaging and integration challenges related to PICs for next-generation telecommunication systems, sensors, and biomedical devices.

One of their activities is focused on using very small lenses (microlenses) to more easily connect the optical channels on PICs with external optical fibers or other elements. They have demonstrated microlenses that can be integrated into the PIC itself during its fabrication process or external microlenses that are added during the packaging process.

The latter is the topic of a recent paper in the Journal of Optical Microsystems.

A small ball lens with a 300 um diameter was used to make an efficient connection between a sensor on a PIC and an which can be connected to standard readout equipment.

In addition, the paper describes the import steps that were needed to transform the PIC into a functional and fully packaged miniature sensor probe (less than 2 mm in diameter). The type of that was developed in this demonstration was a Bragg grating that could measure up to 180°C.

The sensor was realized in the framework of the European SEER project together with Argotech (Czech Republic) and the Photonics Communications Research Laboratory at the National Technical University of Athens (Greece). In this project, several European partners focus on integrating optical in the manufacturing routines for making composite parts such as those used in aircraft, which will ultimately allow process optimization, energy savings, and cost savings.

More information:
Jeroen Missinne et al, Silicon photonic temperature sensor: from photonic integrated chip to fully packaged miniature probe, Journal of Optical Microsystems (2023). DOI: 10.1117/1.JOM.4.1.011005

Citation:
Researchers turn a small photonic chip into a functional temperature sensor (2023, December 15)
retrieved 16 December 2023
from https://phys.org/news/2023-12-small-photonic-chip-functional-temperature.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.


Free TikTok Coins: The Game Changer
TikTok Coin Farming Demystified
TikTok Coin Farming: Tips for Success
Élevez votre expérience TikTok avec des pièces gratuites
Boost Your LivU Video Chat Experience with Free Coins
Coin Master Free Spins Hack: A Complete Overview
Mastering Avacoins in Avakin Life: Expert Insights
Bingo Blitz Credits Hack for Bingo Enthusiasts
Free Spins in Coin Master: The Ultimate Game Changer
psa genshin impact 2 6 external rewards compilation reddit
Free ZEPETO Zems: Elevating Your Virtual Lifestyle
latest cheats match master free coins generator 999k coins
Free TikTok Coins: Where to Find Them
Get Free Gems in Brawl Stars: Tips and Tricks
TikTok Coin Generator Review: What Works Best?
Consejos de Seguridad para Ganar Monedas TikTok Gratis
LivU Video Chat Free Coins Hack: Elevate Your Conversations
Maximize Your Coin Master Earnings with Free Spins
Avakin Life Avacoins Hack for Fashion Enthusiasts
Bingo Blitz Credits Hack Myths Debunked
TikTok Coin Generator Review: What Works Best?
Ganando Monedas Gratis: Desafíos y Recompensas en TikTok
LivU Video Chat Free Coin Generator Insights: Truth vs. Fiction
How to Earn Free Spins in Coin Master: Step-by-Step Tutorial
Boost Your Avakin Life Avatar with Free Avacoins

Leave a Reply

Your email address will not be published. Required fields are marked *