Eric Numkam Fokoua
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Explore the profile of Eric Numkam Fokoua including associated specialties, affiliations and a list of published articles.
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Recent Articles
1.
Wei X, Numkam Fokoua E, Poletti F, Slavik R
ACS Photonics
. 2024 Oct;
11(10):4076-4082.
PMID: 39429860
Optical time domain reflectometry (OTDR) is a key technique to characterize fabricated and installed optical fibers. It is also widely used in distributed sensing. OTDR of emerging hollow-core fibers (HCFs)...
2.
Budd L, Numkam Fokoua E, Taranta A, Poletti F
Opt Express
. 2023 Nov;
31(22):36928-36939.
PMID: 38017832
Antiresonant hollow-core fibers (HCFs) are rapidly establishing themselves as a promising technology with the potential to overcome the limitations faced by conventional solid-core silica fibers. The optical properties and performance...
3.
Ding M, Numkam Fokoua E, Hayes J, Sakr H, Horak P, Poletti F, et al.
Opt Lett
. 2023 May;
48(10):2772.
PMID: 37186762
In the original publication of our research article "Hollow core fiber Fabry-Perot interferometers with reduced sensitivity to temperature" [Opt. Lett.47, 2510 (2022)10.1364/OL.456589OPLEDP0146-9592], we identified an error that requires correction. The...
4.
Feng Z, Sakr H, Hayes J, Numkam Fokoua E, Ding M, Poletti F, et al.
Opt Lett
. 2023 Feb;
48(3):763-766.
PMID: 36723583
Optical fibers with a low thermal coefficient of delay (TCD) have been developed for frequency and timing transmission/distribution. However, their temperature sensitivity changes as a function of temperature and, to...
5.
Shere W, Numkam Fokoua E, Jasion G, Poletti F
Opt Express
. 2022 Oct;
30(22):40425-40440.
PMID: 36298976
We investigate the design of hollow-core fibers for the delivery of 10s of kilowatt average power from multi-mode laser sources. For such lasers, delivery through solid-core fibers is typically limited...
6.
Suslov D, Numkam Fokoua E, Dousek D, Zhong A, Zvanovec S, Bradley T, et al.
Opt Express
. 2022 Oct;
30(20):37006-37014.
PMID: 36258619
We report simultaneous low coupling loss (below 0.2 dB at 1550 nm) and low back-reflection (below -60 dB in the 1200-1600 nm range) between a hollow core fiber and standard...
7.
Zhang X, Feng Z, Marpaung D, Numkam Fokoua E, Sakr H, Hayes J, et al.
Light Sci Appl
. 2022 Jul;
11(1):213.
PMID: 35798693
There are a host of applications in communications, sensing, and science, in which analogue signal transmission is preferred over today's dominant digital transmission. In some of these applications, the advantage...
8.
Ding M, Numkam Fokoua E, Hayes J, Sakr H, Horak P, Poletti F, et al.
Opt Lett
. 2022 May;
47(10):2510-2513.
PMID: 35561388
We demonstrate a 3× thermal phase sensitivity reduction for a hollow-core fiber (HCF) Fabry-Perot interferometer by winding the already low temperature sensitivity HCF on to a spool made from an...
9.
Shi B, Sakr H, Hayes J, Wei X, Numkam Fokoua E, Ding M, et al.
Opt Lett
. 2021 Oct;
46(20):5177-5180.
PMID: 34653145
The optical phase accumulated when light propagates through an optical fiber changes with temperature. It has been shown by various authors that this thermal phase sensitivity is significantly smaller in...
10.
Sanders G, Taranta A, Narayanan C, Numkam Fokoua E, Abokhamis Mousavi S, Strandjord L, et al.
Opt Lett
. 2020 Dec;
46(1):46-49.
PMID: 33362012
Resonator fiber optic gyroscope (RFOG) performance has hitherto been limited by nonlinearity, modal impurity, and backscattering in the sensing fibers. The use of hollow-core fiber (HCF) effectively reduces nonlinearity, but...