Fibre-coupled diodes suit distributed temperature sensing

Posted By : Barney Scott
Fibre-coupled diodes suit distributed temperature sensing

The robust, hermetic assembly of Laser Components' fibre-coupled Avalanche PhotoDiodes (APDs) and Pulsed Laser Diodes (PLDs) make the devices effective for many applications. For example, high-power PLDs (as the laser source) and suitable low-noise InGaAs APDs are used for distributed temperature sensing applications, and Si Geiger-mode APDs are used for photon counting.

The fibres are aligned and fixed with high positional accuracy and close to the detector active area, or laser source, making the fibre-coupled devices especially suitable for sensing applications.

Flexible assembly technology allows almost every combination of optical fibre and APD – Si or InGaAs. In principle, all PLDs can also be equipped with a fibre connection, no matter which wavelength is required: 850, 905 and 1550nm.

All fibres with a core diameter of up to 400µm can be coupled. The devices can also be terminated with FC/PC or SMA connectors upon request. To optimise coupling efficiency, the fibre end faces can be finished with an AR coating.

These robust components can be used across a wide temperature range, and their design goes beyond the requirements of the Telecordia GR­468 directive.


You must be logged in to comment

Write a comment

No comments

Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Girls in Tech | Catalyst | 2019
4th September 2019
United Kingdom The Brewery, London
DSEI 2019
10th September 2019
United Kingdom EXCEL, London
EMO Hannover 2019
16th September 2019
Germany Hannover
Women in Tech Festival 2019
17th September 2019
United Kingdom The Brewery, London
European Microwave Week 2019
29th September 2019
France Porte De Versailles Paris