• Sergio Luiz Stevan Jr
  • José Jair Alves Mendes Júnior
  • Frederich Conrad Janzen
  • Murilo Leme Oliveira
  • Alexandre de Almeida Prado Pohl




Long Period Gratings, Coaxial Transmission Lines, Bragg Gratings, Optical Fiber


This work shows the utilization of a coaxial cable for the fabrication of a long period Bragg grating. The grating is fabricated removing the dielectric in short pieces of the cable so that the discontinuities account for the variation in the medium refractive index. Simulated and experimental results of the grating resonances are shown as a function of the scattering  parameters S, demonstrating the feasibility of the technique. By using the sensor in the MHz frequency range cheaper electronics can be employed, which reduce the overall cost of the sensing system.


[1] S. M. Wentworth, Eletromagnetismo aplicado: abordagem antecipada das linhas de transmissão, Bookman: São Paulo,
2007, pp. 47-53
[2] G. Miamo, and A. Maffucci, Transmission Lines and Lumped Circuits: Fundamental and Applications. Academic
Press: San Diego, California, 2001, pp. 17-21
[3] E. Fontana, “Capítulo 9 Linhas de Transmissão”, Eletromagnetismo – Parte II, Univ. Federal de Pernambuco,
http://www.ufpe.br/fontana/ Eletromagnetismo2/EletromagnetismoWebParte02/mag2cap9.htm (current Mar. 25, 2014).
[4] G. S. N. Raju, Electromagnetic field Theory and Transmission Lines. India Pearson Education: Dehli, 2006, pp 414-
[5] Hoffmann, Lars, et al. "Applications of fibre optic temperature measurement."Proc. Estonian Acad. Sci. Eng 13.4
(2007): 363-378.
[6] Jin, Long, et al. "An embedded FBG sensor for simultaneous measurement of stress and temperature." Photonics
Technology Letters, IEEE 18.1 (2006): 154-156.
[7] Jie Huang, Tao Wei, Xinwei Lan, Jun Fan and Hai Xiao, “Coaxial cable Bragg grating sensors for large strain
measurement with high acuuracy” Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical,
and Aerospace Systems 2012, 83452Z (April, 26, 2012); doi: 10.1117/12.915035.
[8] Huang, Jie, et al. "Coaxial Cable Bragg Grating Sensors for Structural Health Monitoring." International Journal of
Pavement Research and Technology 5.5 (2012): 338-342
[9] Huang J, Wang T, Hua L, Fan J, Xiao H, Luo M. A coaxial cable Fabry-Perot interferometer for sensing applications.
Sensors (Basel). 2013, 13, 15252-15260, doi:10.3390/s131115252
[10] E. Salvati and M. A. Ricardo. Estudo de Defeitos em Cabos Coaxiais Através do Método FDTD – Finite Difference
Time Domain, monograph, Univ. Federal do Paraná, Curitiba, 2004.R. Nicole, “Title of paper with only first word
capitalized,” J. Name Stand. Abbrev., in press.
[11] M. N. O. Sadiku. Elementos de Eletromagnetismo. 5th ed, Bookman, Porto Alegre, 2012, pp.429-481.M. Young,
The Technical Writer’s Handbook. Mill Valley, CA: University Science, 1989.
[12] W. H. Hayt Jr. Eletromagnetismo. 3rd. Rio de Janiro: LTC-Livros Técnicos e Científicos Editora Ltda., 1983, pp 329-
[13] S. Ramo, J. R. Whinnery, T. V. Duzer. Campos e Ondas em Eletrônica das Comunicações. Guanabara Dois: Rio de
Janeiro, 1981, pp 457-461
[14] J.Staples. “Scattering Matrices”. U.S. Particle Accelerator Scholl,
http://uspas.fnal.gov/materials/08UCSC/mml14_scattering_matrices.pdf, (current Mar, 31 2014)
[15] L.Y. Shao, J. Zhao, X. Dong, H. Y. Tam, C. Lu, and S. He. “Long Period prating fabricate by periodically tapering
standard single-mode fiber”, The Hong Kong Polytechnic University, http://repository.lib.polyu.edu.
hk/jspui/bitstream/10397/4331/1/ShaoLong-periodgratingfabricated.pdf. (current Apr. 7, 2014)
[16] K. Srimannarayana et al, “Fiber Bragg grating and long period grating sensor for simultaneous measurement and
discrimination of strain and temperature effects”, Optica Applicata, Vol 38, Nº 3, 2008.
[17] S. A. Vasiliev, and O. I. Medvedkov, “Long Period refractive index fiber gratings: properties, applications, and
fabrication techniques” Russian Academy of Sciences,
http:// http://gratings.fo.gpi.ru/pdf/SPIE_2000_4083_212_Vasiliev.pdf (current Apr. 9, 2014)
[18] R. Kashyap, Fiber Bragg Grating. Academic Press: London, 1999.
[19] V. Bhatia, “Properties and Sensing Applications of Long-Period Gratings”, doctoral dissertation, Faculty of the Virginia
Polytechnic Institute and State University, Blacksburg, Virginia, 1996.
[20] R. C. S. B. Allil, Sensores a fibra óptica com tecnologia FBG para medida de temperatura e alta tensão, doctoral
dissertation, Univ. Federal do Rio de Janeiro. 2010.
[21] S. M. M. Quintero, Aplicações de Sensores a Rede de Bragg em Fibras Ópticas na Medição de pH e Deformação de
Filmes Finos de Alta Dureza, máster’s thesis , Pontifícia Univ. Católica do Rio de Janeiro, 2006.
[22] P. Mégret, S. Bette, C. Crunelle, and C. Caucheteur, “Fiber Bragg Gratings: fundamentals and applications”, Univ. de
Mons, Electromagnetism & Telecom Department, http://www.telecom.fpms.ac.be/PhotonDoctoralSchool2007/
doc/doct-school07-PMegret-FBG-paper.pdf (current Feb. 23, 2014).
[23] E.Al-Fakih, N. A. A. Osman, F. R. M. Adikan. The use of Fiber Grating sensors in biomechanics and rehabilitation
appications: the state-of-the-art and ongoing research topics. Sensors, 2012, pp.12890-12926.
[24] W. L. Schulz, J. P. Conte, E. Udd, J. M. Seim. Static and dynamic testing of bridges and highways using long-gage
fiber Bragg grating based strain sensors, Proc. SPIE, Industrial Sensing Systems, Boston, Mass, 2000.
[25] A. Panopoulou, D. Roulias, T. H. Loutas and V. Kostopoulos. “Health monitoring of aerospace structures using Fiber
Bragg Gratings Combined with advanced signal processing and pattern recognition techniques”, Strain, Vol. 48, Nº3,
June 2012, pp. 267-277.2
[26] James, Stephen W., and Ralph P. Tatam. "Optical fibre long-period grating sensors: characteristics and
application." Measurement Science and Technology 14.5 (2003): R49-R61.
[27] T. Wei, S. Wu, J. Huang, H. Xiao, and J. Fan, “Coaxial cable Bragg grating”, Applied Physics Letters, Vol. 99, Issue
11, 2011
[28] Z. Zhou, Y. Li, P. Zhao, and D. Anton, “Novel Coaxial Cable Bragg Grating”, Pacific Science Review, Vol 13, Nº 3,
2011, pp. 196-199
[29] Songping Wu; Tao Wei; Jie Huang; Hai Xiao; Jun Fan, "Modeling of Coaxial Cable Bragg Grating by Coupled Mode
Theory," Microwave Theory and Techniques, IEEE Transactions on , vol.62, no.10, pp.2251-2259, Oct. 2014
doi: 10.1109/TMTT.2014.2342672
[30] Songping Wu ; Tao Wei ; Jie Huang ; Hai Xiao and Jun Fan, "A study on Q-factor of CCBG sensors by coupled mode
theory", Proc. SPIE8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
2012, 834549 (April 26, 2012); doi:10.1117/12.915755; http://dx.doi.org/10.1117/12.915755.




How to Cite

Sergio Luiz Stevan Jr, José Jair Alves Mendes Júnior, Frederich Conrad Janzen, Murilo Leme Oliveira, & Alexandre de Almeida Prado Pohl. (2015). LONG PERIOD BRAGG GRATING IN COAXIAL TRANSMISSION LINES. Journal of Microwaves, Optoelectronics and Electromagnetic Applications (JMOe), 14(1), 28-39. https://doi.org/10.1590/2179-10742015v14i1424



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