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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Single-photon position to time multiplexing using a fiber array.

Ryan E Warburton¹, Frauke Izdebski, Christian Reimer

¹SUPA, School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK. r.e.warburton@hw.ac.uk

|March 4, 2011

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This study introduces a novel photon-counting array using a single detector by converting spatial position to time information. This receiver system enables efficient detection across eight channels with distinguishable photon arrival times.

Area of Science:

Optoelectronics
Photonics
Quantum Information Science

Background:

Traditional photon-counting arrays often require multiple detectors.
Efficiently coupling multiple optical channels to a single detector presents a technical challenge.

Purpose of the Study:

To develop a novel receiver system capable of spatial-to-temporal information conversion.
To demonstrate a single-detector photon-counting array using a fiber optic array.

Main Methods:

Utilized a 1x8 fiber array with varying fiber lengths for each channel.
Engineered channels for pre-determined signal arrival intervals relative to a reference frequency.
Achieved efficient coupling of all eight channels to a single photon detector.

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Multi-Fiber Photometry to Record Neural Activity in Freely-Moving Animals

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Last Updated: Jun 4, 2026

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Multi-Fiber Photometry to Record Neural Activity in Freely-Moving Animals

Multi-Fiber Photometry to Record Neural Activity in Freely-Moving Animals

Published on: October 20, 2019

Main Results:

Demonstrated distinguishable photon arrival times for each of the eight channels.
Successfully implemented a spatial position to time information exchange.
Developed a functional single-detector photon-counting array.

Conclusions:

The developed receiver system enables a compact and efficient photon-counting array.
This technology has potential applications in time-resolved photoluminescence, low-light spectroscopy, and quantum information processing.