Walter Johnstone

2.4k total citations
129 papers, 1.8k citations indexed

About

Walter Johnstone is a scholar working on Electrical and Electronic Engineering, Spectroscopy and Global and Planetary Change. According to data from OpenAlex, Walter Johnstone has authored 129 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 100 papers in Electrical and Electronic Engineering, 51 papers in Spectroscopy and 23 papers in Global and Planetary Change. Recurrent topics in Walter Johnstone's work include Spectroscopy and Laser Applications (51 papers), Photonic and Optical Devices (49 papers) and Advanced Fiber Optic Sensors (43 papers). Walter Johnstone is often cited by papers focused on Spectroscopy and Laser Applications (51 papers), Photonic and Optical Devices (49 papers) and Advanced Fiber Optic Sensors (43 papers). Walter Johnstone collaborates with scholars based in United Kingdom, Russia and India. Walter Johnstone's co-authors include George Stewart, Brian Culshaw, Kevin L. Duffin, Michael Lengden, K. McCallion, Andrew McGettrick, D.G. Moodie, David G. Moodie, Graham Thursby and Arup Lal Chakraborty and has published in prestigious journals such as The Journal of Chemical Physics, SHILAP Revista de lepidopterología and Applied Physics Letters.

In The Last Decade

Walter Johnstone

122 papers receiving 1.7k citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Walter Johnstone 1.1k 794 350 327 316 129 1.8k
Rudy Peeters 831 0.7× 920 1.2× 528 1.5× 406 1.2× 229 0.7× 31 1.6k
Ruifeng Kan 912 0.8× 1.1k 1.4× 483 1.4× 171 0.5× 367 1.2× 142 1.9k
Ulrike Willer 695 0.6× 649 0.8× 234 0.7× 283 0.9× 257 0.8× 56 1.2k
Dennis K. Killinger 637 0.6× 483 0.6× 291 0.8× 362 1.1× 85 0.3× 84 1.4k
Stéphane Schilt 1.5k 1.3× 1.3k 1.7× 533 1.5× 1.2k 3.6× 356 1.1× 99 2.4k
Bruce E. Bernacki 383 0.3× 496 0.6× 196 0.6× 236 0.7× 222 0.7× 90 1.1k
David M. Sonnenfroh 444 0.4× 897 1.1× 549 1.6× 362 1.1× 92 0.3× 77 1.3k
Min Guo 1.9k 1.6× 1.9k 2.4× 495 1.4× 433 1.3× 1.2k 3.7× 124 3.1k
Anatoliy A. Kosterev 955 0.8× 1.7k 2.2× 1.1k 3.0× 247 0.8× 415 1.3× 50 1.9k
Johannes Koeth 1.1k 1.0× 882 1.1× 328 0.9× 569 1.7× 201 0.6× 116 1.5k

Countries citing papers authored by Walter Johnstone

Since Specialization
Citations

This map shows the geographic impact of Walter Johnstone's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Walter Johnstone with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Walter Johnstone more than expected).

Fields of papers citing papers by Walter Johnstone

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Walter Johnstone. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Walter Johnstone. The network helps show where Walter Johnstone may publish in the future.

Co-authorship network of co-authors of Walter Johnstone

This figure shows the co-authorship network connecting the top 25 collaborators of Walter Johnstone. A scholar is included among the top collaborators of Walter Johnstone based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Walter Johnstone. Walter Johnstone is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Zhang, Rui, Mohamed Pourkashanian, Michael Lengden, et al.. (2025). A Spectroscopy-Constraint Network for Fast Thermochemical Process Monitoring Using Wavelength Modulation Spectroscopy. IEEE Transactions on Instrumentation and Measurement. 74. 1–10. 1 indexed citations
2.
Zhang, Rui, Mohamed Pourkashanian, Michael Lengden, et al.. (2025). A modularized chemical species tomography sensor for dynamic imaging of gas-turbine exhaust. Sensors and Actuators B Chemical. 444. 138459–138459.
3.
Zhang, Rui, Mohamed Pourkashanian, Paul Wright, et al.. (2023). Hybrid Model-Driven Spectroscopic Network for Rapid Retrieval of Turbine Exhaust Temperature. IEEE Transactions on Instrumentation and Measurement. 72. 1–10. 5 indexed citations
4.
Zhang, Rui, H. McCann, Chang Liu, et al.. (2023). Miniature Modular Sensor for Chemical Species Tomography with Enhanced Spatial Resolution. 1–5. 1 indexed citations
5.
Bauer, Ralf, et al.. (2014). 3D-printed miniature gas cell for photoacoustic spectroscopy of trace gases. Optics Letters. 39(16). 4796–4796. 48 indexed citations
6.
Chakraborty, Arup Lal, et al.. (2010). Suppression of intensity modulation contributions to signals in second harmonic wavelength modulation spectroscopy. Optics Letters. 35(14). 2400–2400. 15 indexed citations
7.
Chakraborty, Arup Lal, et al.. (2009). Influence of the wavelength-dependence of fiber couplers on the background signal in wavelength modulation spectroscopy with RAM-nulling. Optics Express. 18(1). 267–267. 9 indexed citations
8.
Stewart, George, Walter Johnstone, Norhana Arsad, & Kevin L. Duffin. (2008). Tunable diode and fibre laser spectroscopy in the near-IR for measurement of gas parameters. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 7003. 700319–700319. 5 indexed citations
9.
Gibson, Lorraine T., William J. Kerr, Alison Nordon, et al.. (2008). On-site determination of formaldehyde: A low cost measurement device for museum environments. Analytica Chimica Acta. 623(1). 109–116. 28 indexed citations
10.
Li, Lijie, et al.. (2007). MEMS Retro-Phase-Modulator for Free-Space Coherent Optical Communications. IEEE Journal of Selected Topics in Quantum Electronics. 13(2). 330–335. 3 indexed citations
11.
Brown, Gordon C., et al.. (2006). Microelectromechanical systems actuated small-scale retroreflectors for free space optical communications. Journal of Optics A Pure and Applied Optics. 8(7). S384–S390. 6 indexed citations
12.
Johnstone, Walter, et al.. (2006). Micro-actuated small-scale spherical retroreflector for free space optical communications. 103. 159–160. 1 indexed citations
13.
Johnstone, Walter, et al.. (2005). Detection of acetylene gas using optical correlation spectroscopy. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 5855. 475–475. 2 indexed citations
14.
Johnstone, Walter, et al.. (2000). Student laboratory experiments on erbium-doped fiber amplifiers and lasers. Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE. 3831. 259–259. 3 indexed citations
15.
Stewart, George, et al.. (1999). Mode-hop-free single-longitudinal-mode erbium-doped fiber laser frequency scanned with a fiber ring resonator. Applied Optics. 38(24). 5154–5154. 28 indexed citations
16.
Bellanca, Gaetano, et al.. (1999). Highly efficient full-vectorial 3-D BPM modeling of fiber to planar waveguide couplers. Journal of Lightwave Technology. 17(1). 136–143. 15 indexed citations
17.
Johnstone, Walter, et al.. (1997). Low voltage tunable in-line channel dropping filterusing liquid crystal waveguide overlays. Electronics Letters. 33(11). 985–986. 11 indexed citations
18.
Johnstone, Walter, et al.. (1995). In line fibre optic electric field sensing technique without interruption of the fibre. IEE Proceedings - Science Measurement and Technology. 142(2). 109–113. 5 indexed citations
19.
McCallion, K., et al.. (1995). A Tunable Fiber-Optic Bandpass Filter Based on Polished Fiber to Planar Waveguide Coupling Techniques. Optical Fiber Technology. 1(3). 271–277. 10 indexed citations
20.
Johnstone, Walter, et al.. (1994). Polarisation referencing in refractometry usingfibre to planarwaveguide couplers incorporating thin metal layers. Electronics Letters. 30(10). 781–782. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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