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Specialists in Mechanical Testing and Reliability of Optical Fibers

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About Fiber Sigma

Dr. Matthewson developed mechanical test equipment for optical fiber for his own research in this field. He founded Fiber Sigma in order to make this equipment available to the optical fiber community at large. This equipment is highly specialised and some is unique in that it is not available elsewhere. Fiber Sigma equipment is now in use in most of the large optical fiber manufacture, research and testing laboratories around the world. Click here to see a partial list of our clients.

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M. John Matthewson MA PhD CPhys MInstP

John Matthewson received his BA degree in Natural Sciences/Theoretical Physics and MA and PhD degrees in Physics, all from Cambridge University, UK. In his spare time as a student he learned to fly with the RAF Cambridge University Air Squadron. After obtaining his doctorate, he was the Goldsmiths Junior Research Fellow at Churchill College, Cambridge. He subsequently worked at Cambridge University Computer Laboratory, AT&T Bell Laboratories (postdoctoral advisor Dr. Charles "Chuck" Kurkjian) and IBM Almaden Research Center. He then lead the Photonics Components Reliability Group at Rutgers University where he was Professor of Materials Science and Engineering. His research is in the field of fiber mechanical characterization and reliability. Dr. Matthewson has published over 100 papers in the general area of mechanical behavior of materials, many of which are concerned with the strength, fatigue and reliability of optical fibers. He is co-author of the second edition of the book Mechanical Properties of Ceramics, J.B. Wachtman, W.R. Cannon and M.J. Matthewson, Wiley, April 2009. Dr. Matthewson received the Outstanding Educator Award from the American Ceramic Society and has received several awards for excellence in teaching from the students at Rutgers University where he taught undergraduate Strength of Materials, undergraduate Electronic, Optical and Magnetic Properties of Materials and graduate Thermodynamics of Materials Systems. He also taught the undergraduate Physics of Materials course for many years, as well as several other courses. He is a Fellow of the American Ceramic Society. Stanford University's latest citation analysis ranks Dr. Matthewson within the top 2% of world scientists in the field of Optoelectronics & Photonics, both for the single year 2025 and for his cumulative career up to 2025.

In his spare time as a student he learned to fly with the Royal Air Force Cambridge University Air Squadron "Doctrinam accingimus alis ("We equip learning with wings"). He very much enjoyed the experience but was an indifferent pilot!

Selected Publications:

bulletM. J. Matthewson, C. R. Kurkjian & S. T. Gulati (1986) "Strength measurement of optical fibers in bending" J. Am. Ceram. Soc. 69 (11) 815-821.
bulletM. J. Matthewson & C. R. Kurkjian (1987) "Static fatigue of optical fibers in bending" J. Am. Ceram. Soc. 70 (9) 662-668.
bulletM. J. Matthewson (1994) "Optical fiber mechanical testing techniques" SPIE Critical Review Series CR50 32-59.
bulletM. J. Matthewson (1994) "Optical fiber reliability models" SPIE Critical Review Series CR50 3-31.
V. V. Rondinella, M. J. Matthewson & C. R. Kurkjian (1994) "Coating additives for improved mechanical reliability of optical fiber" J. Am. Ceram. Soc. 77 [1] 73-80.
bulletG. J. Nelson, M. J. Matthewson & B. Lin (1996) "A novel four-point bend test for strength measurement of optical fibers and thin beams, part 1: bending analysis" J. Lightwave Tech. 14 [4] 555-563.
bulletM. J. Matthewson, B. Lin & A. P. Stanzeski (1994) "Modeling weak optical fiber using Vicker's indentation" OFC’94 Technical Digest 5 245, OSA, Salem, MA, 1994.

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