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Research Output 2001 2019

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Paper
2018
15 Downloads (Pure)

CIDAR: combustion species imaging diagnostics for aero-engine research

Archilla, V., Aragón, G., Wright, P., Ozanyan, K., Black, J., Polydorides, N., McCann, H., Lengden, M., Burns, I., Johnstone, W., Polo, V., Beltran, M., Mauchline, I., Walsh, D. & Johnson, M., 18 Jun 2018. 1 p.

Research output: Contribution to conferencePaper

Open Access
File
Bypass ratio
Engines
Imaging techniques
Exhaust systems (engine)
Aircraft engines
23 Downloads (Pure)

CIDAR project - development of a non-intrusive capability for aircraft engine measurements

Archilla, V., Aragón, G., Wright, P., Ozanyan, K., Black, J., Lengden, M., Burns, I., Johnstone, W., Polo, V., Beltran, M. & Johnson, M., 18 Jun 2018. 1 p.

Research output: Contribution to conferencePaper

Open Access
File
Bypass ratio
Aircraft engines
Engines
Imaging techniques
Temperature distribution
2014
110 Downloads (Pure)

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

Feng, Y., Nilsson, J., Jain, S., May-Smith, T. C., Sahu, J. K., Jia, F., Benoy, T., Wilson, D., Lengden, M. & Johnstone, W., Aug 2014. 1 p.

Research output: Contribution to conferencePaper

Open Access
File
Thulium
Fiber amplifiers
Tomography
Jet engines
Exhaust systems (engine)
2011
1 Citation (Scopus)
131 Downloads (Pure)

Semiconductor optical amplifiers in avionics

Michie, W., Johnstone, W., Andonovic, I., Murphy, E., White, H. & Kelly, A., 18 Nov 2011, p. 73-74. 2 p.

Research output: Contribution to conferencePaper

Open Access
File
avionics
light amplifiers
S band
C band
ultrahigh frequencies
2010
91 Downloads (Pure)

In-situ, real time gas composition measurements for SOFC's using laser spectroscopy

Lengden, M., Johnstone, W. & Cunningham, R., Jul 2010, (Unpublished).

Research output: Contribution to conferencePaper

File
Laser spectroscopy
Solid oxide fuel cells (SOFC)
Chemical analysis
Gases
Gas chromatography

Power requirements and operation of amplified optical networks for future aerospace applications

Proudfoot, A. D., Michie, C., Johnstone, W. & White, H. J., Sep 2010, p. 17-18. 2 p.

Research output: Contribution to conferencePaper

Aerospace applications
Fiber optic networks
Amplification
Wavelength
Semiconductor optical amplifiers

The operation and power budget of amplified optical networks for aerospace applications

Proudfoot, A. D., Michie, C., Johnstone, W. & White, H. J., 1 May 2010, (Unpublished).

Research output: Contribution to conferencePaper

Aerospace applications
Fiber optic networks
2009

An investigation of TDLS modulation schemes as applied to the Mid-IR spectral region by difference frequency generation in PPLN

Armstrong, I., Chakraborty, A., Ruxton, K. C. & Johnstone, W., Jul 2009, (Unpublished).

Research output: Contribution to conferencePaper

modulation

Diode laser spectroscopy using a calibration free phasor decomposition approach to RAM nulling

Ruxton, K. C., Chakraborty, A. L., McGettrick, A. J., Duffin, K., Johnstone, W. & Stewart, G., 2009, p. 70. 1 p.

Research output: Contribution to conferencePaper

laser spectroscopy
diodes
decomposition
harmonics
lithium niobates

Diode laser spectroscopy using a calibration free phasor decomposition approach with RAM nulling

Ruxton, K. C., Chakraborty, A., McGettrick, A. J., Duffin, K., Johnstone, W. & Stewart, G., Jul 2009, p. 80. 1 p.

Research output: Contribution to conferencePaper

laser spectroscopy
diodes
decomposition
line shape
recovery

Elimination of residual amplitude modulation in TDLS-WMS

Chakraborty, A. L., Ruxton, K. C., Johnstone, W., Lengden, M. & Duffin, K., Jun 2009.

Research output: Contribution to conferencePaper

elimination
quantum electronics
Germany
electro-optics
lasers
103 Downloads (Pure)

Gas sensing based on optical fibre coupled diode laser spectroscopy: a new approach to sensor systems for safety monitoring

Culshaw, B., Johnstone, W., Stewart, G., Duffin, K., Mauchline, I. S. & Walsh, D., Nov 2009, p. 949-958. 9 p.

Research output: Contribution to conferencePaper

File
Optical fiber coupling
Laser spectroscopy
Light sources
Semiconductor lasers
Methane

Modelling the power budget of amplified optical networks for future aerospace applications

Proudfoot, A. D., Michie, C., Johnstone, W. & White, H. J., 2009, (Unpublished) p. 72-73. 2 p.

Research output: Contribution to conferencePaper

Aerospace applications
Fiber optic networks
Electric power utilization
Military aircraft
Semiconductor optical amplifiers
gas composition
laser spectroscopy
diodes
temperature

Recovery of absolute gas absorption lineshapes using TDLS at arbitrary modulation indices

Bain, J. R. P., Stewart, G., Duffin, K., Lengden, M., Ruxton, K. C. & Johnstone, W., Sep 2009.

Research output: Contribution to conferencePaper

laser applications
Germany
recovery
industries
modulation
6 Citations (Scopus)

Remote methane sensor using raman amplified open path TDLS

Mitchell, D. M., Duffin, K. & Johnstone, W., Jul 2009, p. 34. 1 p.

Research output: Contribution to conferencePaper

Methane
Sensors
Modulation
Fibers
Spectroscopy

Remote methane sensor using TDLS via a high power Raman amplified source

Mitchell, D., Duffin, K. & Johnstone, W., 2009, (Unpublished).

Research output: Contribution to conferencePaper

methane
amplifiers
Fresnel lenses
sensors
natural gas
6 Citations (Scopus)

Remote methane sensor using Tunable Diode Laser Spectroscopy (TDLS) via a 1W Raman So

Mitchell, D. M., Duffin, K. & Johnstone, W., Sep 2009.

Research output: Contribution to conferencePaper

laser spectroscopy
methane
amplifiers
diodes
Fresnel lenses
6 Citations (Scopus)

Remote methane sensor using tuneable diode laser spectroscopy (TDLS) via a 1W Raman source

Mitchell, D. M., Duffin, K. & Johnstone, W., Oct 2009.

Research output: Contribution to conferencePaper

laser spectroscopy
methane
amplifiers
diodes
Fresnel lenses

Two gas spectrometers for the investigation of gas absorption parameters at elevated temperatures and pressures

Lengden, M., Bain, J. R. P., Armstrong, I. & Johnstone, W., Sep 2009.

Research output: Contribution to conferencePaper

spectrometers
plasma diagnostics
gases
temperature
2008

Calibration free, optical measurements of gas composition for industrial process control in harsh environments

Johnstone, W., McGettrick, A. J., Duffin, K. & Stewart, G., 2008, (Unpublished).

Research output: Contribution to conferencePaper

gas composition
optical measurement
gas composition
laser spectroscopy
diodes
decomposition

Remote gas detection using tunable diode laser spectroscopy with high power rare earth and raman fibre amplifiers

Johnstone, W., Duffin, K. & Mitchell, D. M., Dec 2008, (Unpublished).

Research output: Contribution to conferencePaper

laser spectroscopy
rare earth elements
methane
amplifiers
diodes
2007
modulation
gases
wavelengths
spectroscopy
frequency modulation

Practical introduction to optical WDM components and systems in student teaching laboratories

Mauchline, I., Walsh, D., Moodie, D., Conner, S., Johnstone, W. & Culshaw, B., 2007.

Research output: Contribution to conferencePaper

wavelength division multiplexing
students
education
Bragg gratings
format
2005
2 Citations (Scopus)

Detection of acetylene gas using optical correlation spectroscopy

Cheung, A., Johnstone, W. & Moodie, D., 2005.

Research output: Contribution to conferencePaper

acetylene
signal measurement
delay lines
gases
light amplifiers

Gas spectroscopy in the near infrared optical fibre network

Cheung, A., Culshaw, B., Duffin, K., Johnstone, W., McGettrick, A. D., Mauchline, I. S. & Moodie, D., 2005.

Research output: Contribution to conferencePaper

gas spectroscopy
optical fibers

Microactuated small scale retroreflector for free space optical communications

Jenkins, C. R., Johnstone, W., Uttamchandani, D. G., Handerek, V. & Radcliffe, S., 2005, p. 159-160. 2 p.

Research output: Contribution to conferencePaper

retroreflectors
free-space optical communication
actuation
microelectromechanical systems
modulators
3 Citations (Scopus)

Practical bit error rate measurements on fibre optic communications links in student teaching laboratories

Walsh, D. J., Moodie, D., Mauchline, I. S., Conner, S., Johnstone, W. & Culshaw, B., Oct 2005. 15 p.

Research output: Contribution to conferencePaper

Bit error rate
Fiber optics
Telecommunication links
Teaching
Students
1 Citation (Scopus)

Recent advances in gas detection using optical correlation spectroscopy

Cheung, A., Johnstone, W. & Moodie, D., 2005.

Research output: Contribution to conferencePaper

optical fibers
delay lines
gases
light amplifiers
acetylene
2003
3 Downloads (Pure)

OptoSci educator kits - an immediate solution to photonics teaching laboratories

Walsh, D. J., Moodie, D., Mauchline, I. S., Johnstone, W. & Stewart, G., Oct 2003. 2 p.

Research output: Contribution to conferencePaper

tutor
educator
university
Teaching
costs
2002
6 Citations (Scopus)

Large scale multiplexing a point sensor for methane gas detection

Culshaw, B., Johnstone, W., McLean, A., Mauchline, I. S., Moodie, D. & Stewart, G., May 2002, p. 261-264. 4 p.

Research output: Contribution to conferencePaper

Multiplexing
Methane
Sensors
Gases
3 Citations (Scopus)

Optical fibre sensors for environmental monitoring of trace gases

Stewart, G., Whitenett, G. L., Atherton, K., Culshaw, B. & Johnstone, W., Aug 2002, p. 963-964. 2 p.

Research output: Contribution to conferencePaper

Fiber optic sensors
Methane
Hydrogen sulfide
Monitoring
Carbon dioxide
2001
9 Citations (Scopus)

A distributed fibre optic sensor for liquid hydrocarbon detection

Maclean, A., Moran, C., Johnstone, W., Culshaw, B., Marsh, D. & Andrews, G. M., 2001, p. 47-53. 6 p.

Research output: Contribution to conferencePaper

Fiber optic sensors
Hydrocarbons
Sensors
Liquids
Swelling