Jonathan C. Knight

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Jonathan Cave Knight
Born17 June 1964
ResidenceUnited Kingdom, U.K.
NationalityUnited Kingdom
CitizenshipUnited Kingdom
Alma materUniversity of Cape Town
Known forPhotonic-crystal fiber
Optical Fibers
Scientific career
FieldsPhysics, Photonics
InstitutionsUniversity of Bath
ThesisWhispering gallery mode microlaser in a capillary fibre (1993)
Doctoral advisorG N Robertson, H S T Driver

Jonathan C. Knight (born 1964, in Lusaka) is a British physicist. He is the Pro Vice-Chancellor (Research) for the University of Bath[1] where he has been Professor in the Department of Physics since 2000, and served as Head of Department.[2] From 2005 to 2008, he was founding Director of the University’s Centre for Photonics and Photonic Materials.


Knight studied at the University of Cape Town where he obtained his B.Sc (Hons), M.Sc. and PhD. His doctoral thesis was on whispering gallery mode microlasers. He did postdoctoral research at the École Normale Supérieure (Paris, 1994–1995) and at the Optoelectronics Research Centre (University of Southampton, 1995–1996).


Knight is interested in the behaviour of light in microstructured materials, and in the physics of optical fibres.[3] Working with Russell and Tim Birks, he designed, fabricated and demonstrated a number of novel forms of optical fibre waveguide with previously unobtainable characteristics.[4][5] This work has led to a range of outcomes including the commercialisation[6],[7] of a new form of light source (supercontinuum), high power short pulse laser delivery through fibre, and applications in quantum and atomic physics.[8] Belardi and Knight proposed the hollow-core "nested-ring" design for photonic fibres, at the beginning of 2014.[9] Together with William Wadsworth, Knight co-created a new kind of laser capable of pulsed and continuous mid-infrared (IR) emission between 3.1 and 3.2 microns, a spectral range that has long presented a major challenge for laser developers.[10]

Awards and recognition[edit]

Selected publications[edit]

  • Yu, F.; Wadsworth, W.J.; Knight, J.C. (2012). "Low loss silica hollow-core fibers for 3-4 μm spectral region". Optics Express. 20 (10): 11153–8. doi:10.1364/OE.20.011153. PMID 22565738.
  • Stone, J. M.; Knight, J. C. (2008). "Visibly "white" light generation in uniform photonic crystal fiber using a microchip laser". Optics Express. 16 (4): 2670–2675. doi:10.1364/OE.16.002670.
  • Knight, J. C.; Broeng, J.; Birks, T. A.; Russell, P. St.J. (1998). "Photonic band gap guidance in optical fibers". Science. 282 (5393): 1476–1478. doi:10.1126/science.282.5393.1476.
  • Knight, J. C.; Cheung, G.; Jacques, F.; Birks, T. A. (1997). "Phase-matched excitation of whispering-gallery-mode resonances by a fiber taper". Optics Letters. 22 (15): 1129–1131. doi:10.1364/OL.22.001129.
  • Knight, J. C.; Birks, T. A.; Russell, P. St. J.; Atkin, D. M. (1996). "All-silica single-mode optical fiber with photonic crystal cladding". Optics Letters. 21 (19): 1547–9. doi:10.1364/OL.21.001547. PMID 19881720.


  1. ^ Knight, Jonathan. "Leadership profile". 24 September 2018. University of Bath.
  2. ^ Harris, Margaret. "Top UK physics departments tumble in new assessment". 18 December 2008. Physics World.
  3. ^ Jonathan Knight publications indexed by Google Scholar
  4. ^ "Physics professors receive Rank Prize for optical fibre discoveries". 15 February 2018. My Science.
  5. ^ Gabriel, Gache. "Newly Designed Optical Fiber Is Hollow". 18 January 2008. Softpedia.
  6. ^ Sabert, Hendrik; Knight, Jonathan. "Hollow-Core Fibers Seek the 'Holey' Grail". August 2003. Photonics Spectra.
  7. ^ Lloyd, Hywel. "8m deal as city firm sells assets to rival". 10 August 2004. Bath Chronicle.
  8. ^ Wadsworth, William; Knight, Jonathan; Birks, Tim. "State-of-the-Art Photonic Crystal Fiber". 1 March 2012. Optics and Photonics News.
  9. ^ Wallace, John. "Hollow-core antiresonant optical fibers: Part II". 05 March 2019. Laser Focus World.
  10. ^ "New laser achieves wavelength long sought by laser developers". 05 March 2019. Phys.Org.

External links[edit]