LD-seeded thulium-doped fibre amplifier for CO2 measurements at 2 µm

Yutong Feng, Johan Nilsson, Saurabh Jain, Timothy C. May-Smith, Jayanta K. Sahu, Fuqiang Jia, Thomas Benoy, David Wilson, Michael Lengden, Walter Johnstone

Research output: Contribution to conferencePaper

Abstract

Carbon dioxide (CO2) measurements are of interest to the aviation industry because of the need to reduce net CO2 emission from aero (“jet”) engines [1] as well as for engine diagnostics. Chemical Species Tomography (CST) is a technique that uses an optical source for multi-path integrated absorption measurements and from those calculates a 2-dimensional image of target gas concentration [2]. In FLITES [3], we target CST of CO2 in aero-engine exhaust plumes with diameter up to ~ 1.4 m at wavelengths around 2 μm. Typically, single-path absorption measurements are carried out using distributed feedback (DFB) diode lasers with powers of ~2 mW. For CST, however, it would be necessary to use over one hundred separate paths, and thus laser sources, to achieve adequate spatial and temporal resolution. It is essential that a single CST-capable laser source, with total power above 1 W, is developed and the light distributed into the individual paths using optical fibre components.
LanguageEnglish
Number of pages1
Publication statusPublished - Aug 2014
EventEurophoton 2014 - Neuchatel, Switzerland
Duration: 24 Aug 201429 Aug 2014

Conference

ConferenceEurophoton 2014
CountrySwitzerland
CityNeuchatel
Period24/08/1429/08/14

Fingerprint

Thulium
Fiber amplifiers
Tomography
Jet engines
Exhaust systems (engine)
Lasers
Aviation
Light sources
Semiconductor lasers
Optical fibers
Carbon dioxide
Engines
Feedback
Wavelength
Gases
Industry

Keywords

  • aviation industry
  • engine diagnostics
  • absorption measurements

Cite this

Feng, Y., Nilsson, J., Jain, S., May-Smith, T. C., Sahu, J. K., Jia, F., ... Johnstone, W. (2014). LD-seeded thulium-doped fibre amplifier for CO2 measurements at 2 µm. Paper presented at Europhoton 2014, Neuchatel, Switzerland.
Feng, Yutong ; Nilsson, Johan ; Jain, Saurabh ; May-Smith, Timothy C. ; Sahu, Jayanta K. ; Jia, Fuqiang ; Benoy, Thomas ; Wilson, David ; Lengden, Michael ; Johnstone, Walter. / LD-seeded thulium-doped fibre amplifier for CO2 measurements at 2 µm. Paper presented at Europhoton 2014, Neuchatel, Switzerland.1 p.
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abstract = "Carbon dioxide (CO2) measurements are of interest to the aviation industry because of the need to reduce net CO2 emission from aero (“jet”) engines [1] as well as for engine diagnostics. Chemical Species Tomography (CST) is a technique that uses an optical source for multi-path integrated absorption measurements and from those calculates a 2-dimensional image of target gas concentration [2]. In FLITES [3], we target CST of CO2 in aero-engine exhaust plumes with diameter up to ~ 1.4 m at wavelengths around 2 μm. Typically, single-path absorption measurements are carried out using distributed feedback (DFB) diode lasers with powers of ~2 mW. For CST, however, it would be necessary to use over one hundred separate paths, and thus laser sources, to achieve adequate spatial and temporal resolution. It is essential that a single CST-capable laser source, with total power above 1 W, is developed and the light distributed into the individual paths using optical fibre components.",
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Feng, Y, Nilsson, J, Jain, S, May-Smith, TC, Sahu, JK, Jia, F, Benoy, T, Wilson, D, Lengden, M & Johnstone, W 2014, 'LD-seeded thulium-doped fibre amplifier for CO2 measurements at 2 µm' Paper presented at Europhoton 2014, Neuchatel, Switzerland, 24/08/14 - 29/08/14, .

LD-seeded thulium-doped fibre amplifier for CO2 measurements at 2 µm. / Feng, Yutong; Nilsson, Johan; Jain, Saurabh ; May-Smith, Timothy C. ; Sahu, Jayanta K.; Jia, Fuqiang; Benoy, Thomas; Wilson, David; Lengden, Michael; Johnstone, Walter.

2014. Paper presented at Europhoton 2014, Neuchatel, Switzerland.

Research output: Contribution to conferencePaper

TY - CONF

T1 - LD-seeded thulium-doped fibre amplifier for CO2 measurements at 2 µm

AU - Feng, Yutong

AU - Nilsson, Johan

AU - Jain, Saurabh

AU - May-Smith, Timothy C.

AU - Sahu, Jayanta K.

AU - Jia, Fuqiang

AU - Benoy, Thomas

AU - Wilson, David

AU - Lengden, Michael

AU - Johnstone, Walter

PY - 2014/8

Y1 - 2014/8

N2 - Carbon dioxide (CO2) measurements are of interest to the aviation industry because of the need to reduce net CO2 emission from aero (“jet”) engines [1] as well as for engine diagnostics. Chemical Species Tomography (CST) is a technique that uses an optical source for multi-path integrated absorption measurements and from those calculates a 2-dimensional image of target gas concentration [2]. In FLITES [3], we target CST of CO2 in aero-engine exhaust plumes with diameter up to ~ 1.4 m at wavelengths around 2 μm. Typically, single-path absorption measurements are carried out using distributed feedback (DFB) diode lasers with powers of ~2 mW. For CST, however, it would be necessary to use over one hundred separate paths, and thus laser sources, to achieve adequate spatial and temporal resolution. It is essential that a single CST-capable laser source, with total power above 1 W, is developed and the light distributed into the individual paths using optical fibre components.

AB - Carbon dioxide (CO2) measurements are of interest to the aviation industry because of the need to reduce net CO2 emission from aero (“jet”) engines [1] as well as for engine diagnostics. Chemical Species Tomography (CST) is a technique that uses an optical source for multi-path integrated absorption measurements and from those calculates a 2-dimensional image of target gas concentration [2]. In FLITES [3], we target CST of CO2 in aero-engine exhaust plumes with diameter up to ~ 1.4 m at wavelengths around 2 μm. Typically, single-path absorption measurements are carried out using distributed feedback (DFB) diode lasers with powers of ~2 mW. For CST, however, it would be necessary to use over one hundred separate paths, and thus laser sources, to achieve adequate spatial and temporal resolution. It is essential that a single CST-capable laser source, with total power above 1 W, is developed and the light distributed into the individual paths using optical fibre components.

KW - aviation industry

KW - engine diagnostics

KW - absorption measurements

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M3 - Paper

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Feng Y, Nilsson J, Jain S, May-Smith TC, Sahu JK, Jia F et al. LD-seeded thulium-doped fibre amplifier for CO2 measurements at 2 µm. 2014. Paper presented at Europhoton 2014, Neuchatel, Switzerland.