A simple experimental method for measuring the thermal sensitivity of single-mode fibers
(2020) In Review of Scientific Instruments 91(10).- Abstract
We present a simple technique to experimentally determine the optical-path length change with temperature for optical single-mode fibers. Standard single-mode fibers act as natural low-finesse cavities, with the Fresnel reflection of the straight cleaved surfaces being ∼3%, for the laser light coupled to them. By measuring the intensity variations due to interference of light reflected from the fiber front and end surfaces, while ramping the ambient temperature, the thermal sensitivity of the optical-path length of the fiber can be derived. Light was generated by a narrow linewidth, low drift laser. With our fairly short test fibers, we found that it was possible to reach a relative precision of the temperature sensitivity, compared to... (More)
We present a simple technique to experimentally determine the optical-path length change with temperature for optical single-mode fibers. Standard single-mode fibers act as natural low-finesse cavities, with the Fresnel reflection of the straight cleaved surfaces being ∼3%, for the laser light coupled to them. By measuring the intensity variations due to interference of light reflected from the fiber front and end surfaces, while ramping the ambient temperature, the thermal sensitivity of the optical-path length of the fiber can be derived. Light was generated by a narrow linewidth, low drift laser. With our fairly short test fibers, we found that it was possible to reach a relative precision of the temperature sensitivity, compared to a reference fiber, on the 0.4%-2% scale and an absolute precision of 2%-5%, with the potential to improve both by an order of magnitude. The results for single-acrylate, dual-acrylate, and copper- and aluminum-coated fibers are presented. Values are compared with analytic models and results from a finite element method simulation. With the aid of these measurements, a simple fiber-interferometer, which is insensitive to thermal drifts, could be constructed.
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- author
- Bondza, Saskia ; Bengtsson, Alexander LU ; Horvath, Sebastian P. LU ; Walther, Andreas LU ; Kröll, Stefan LU and Rippe, Lars LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Review of Scientific Instruments
- volume
- 91
- issue
- 10
- article number
- 105114
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- pmid:33138548
- scopus:85094843507
- ISSN
- 0034-6748
- DOI
- 10.1063/5.0020913
- language
- English
- LU publication?
- yes
- id
- 3a5c20ef-db0b-430b-ae3a-2a5696d5b0d4
- date added to LUP
- 2020-11-17 09:32:34
- date last changed
- 2024-04-03 18:08:05
@article{3a5c20ef-db0b-430b-ae3a-2a5696d5b0d4,
abstract = {{<p>We present a simple technique to experimentally determine the optical-path length change with temperature for optical single-mode fibers. Standard single-mode fibers act as natural low-finesse cavities, with the Fresnel reflection of the straight cleaved surfaces being ∼3%, for the laser light coupled to them. By measuring the intensity variations due to interference of light reflected from the fiber front and end surfaces, while ramping the ambient temperature, the thermal sensitivity of the optical-path length of the fiber can be derived. Light was generated by a narrow linewidth, low drift laser. With our fairly short test fibers, we found that it was possible to reach a relative precision of the temperature sensitivity, compared to a reference fiber, on the 0.4%-2% scale and an absolute precision of 2%-5%, with the potential to improve both by an order of magnitude. The results for single-acrylate, dual-acrylate, and copper- and aluminum-coated fibers are presented. Values are compared with analytic models and results from a finite element method simulation. With the aid of these measurements, a simple fiber-interferometer, which is insensitive to thermal drifts, could be constructed.</p>}},
author = {{Bondza, Saskia and Bengtsson, Alexander and Horvath, Sebastian P. and Walther, Andreas and Kröll, Stefan and Rippe, Lars}},
issn = {{0034-6748}},
language = {{eng}},
number = {{10}},
publisher = {{American Institute of Physics (AIP)}},
series = {{Review of Scientific Instruments}},
title = {{A simple experimental method for measuring the thermal sensitivity of single-mode fibers}},
url = {{http://dx.doi.org/10.1063/5.0020913}},
doi = {{10.1063/5.0020913}},
volume = {{91}},
year = {{2020}},
}