NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Hyperspectral photon-counting optical time domain reflectometry
Published
Author(s)
Anouar Rahmouni, Samprity Saha, Oliver T. Slattery, Thomas Gerrits
Abstract
Optical time-domain reflectometry (OTDR) is one of the most used techniques for nondestructive characterization of optical fiber links. Although conventional OTDR exhibits good performance in classical network applications, photoncounting OTDR (ν-OTDR) offers a promising way for in-situ optical channel characterization of quantum network fibers where single-photon detectors are present. ν-OTDR has been demonstrated at the telecommunication wavelengths of 1310 and 1550 nm. Here, we present our hyperspectral ν-OTDR measurement covering a wavelength range from 1150 nm to 1800 nm. The results show low attenuation in SMF-28 fiber between 1150 nm and 1700 nm of less than 0.5 dB/km. However, we show that connector loss can worsen significantly for wavelengths greater than 1550 nm.
Proceedings Title
Quantum Communications and Quantum Imaging XX; (2022)
Rahmouni, A.
, Saha, S.
, Slattery, O.
and Gerrits, T.
(2022),
Hyperspectral photon-counting optical time domain reflectometry, Quantum Communications and Quantum Imaging XX; (2022), San Diego, CA, US, [online], https://doi.org/10.1117/12.2633451, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=935586
(Accessed October 8, 2025)