syd_top IR_0026 CT002 20091203_3421
burning_building i7
FLIR_T301
flexcam3

NEW DIRECTIONS IN BUILDING SERVICES  / NEW DIRECTIONS IN BUSINESS SAFETY / NDIBS

Providing Building Services & Compliance Assessment and Advisory to Building Owners and their Managing Agents

FIRE ASSESS

FireAssessRisk

Dr. Paul Childs has joined NDIBS as an associate.

Paul has been traipsing through buildings for all of his life and now assists and reviews our procedures and processes.

He has a Ph.D. (Electrical Engineering) UNSW, an M.ScTech. (Photonics) upgraded from Grad.Dip. (Photonics) UNSW and B.Sc. (Physics) UNSW.

He is currently undertaking a Grad.Cert. (Tert. Teaching) CurtinU.

Prior to joining NDIBS, from Jul’11 Paul was at UNSW school of Electrical Engineering & Telecommunications performing research into blazed optical fibre gratings.

paul-squat

In 2010~2011 Paul was at Crete at the Hellas Foundation for research and technology as Postdoctoral Fellow with the Institute of Electronic Structure and Laser - performing reseach into optical sensing for biomedical applications.

In 2008~2009 Paul was at Tsinghua University (Beijing China) as Postdoctoral Fellow at the Department of Electrical Engineering, performing research into multiplexing technology and fibre optic devices for hydrogen sensing.

In Mid 2003~Nov 2007 Paul was at UNSW as Laboratory demonstrator for various optoelectronics labs, acted as tutor for waveguide theory and training students and staff in grating fabrication. In Feb’06 Paul commenced as Research Officer in charge of operational, teaching and research for the photonics and optoelectronics group at the UNSW School of Electrical Engineering and Telecommunications.
Paul provided OH&S assessment and development for the laboratories and for demonstrations performed.

In Jan~Jun’03 Paul provided at Tien Shan School (Alma Ata Kazakhstan) part time teaching at two high school math classes and assisted with two physics classes.

Jul’01~Jan’03 Paul was at UNSW as Photonics Consultant at School of Physics - working on modernising and optimising existing experiments for the teaching laboratory as well as development of new experiments. Plus serving as a Laboratory Demonstrator for the postgraduate optoelectronic laboratories.

Jul’00~Apr’02 Paul was at JDS Uniphase (Sydney) as Technician on the Fibre Bragg Grating writing process and then the Development Technician for these processes and fibre characterisation.

Paul is the father of Jowan (born 2008) and Aydin (born 2010).

Paul is a member of the Institute of Physics

Publications

Refereed Papers
1. A. Candiani, M. Sozzi A. Cucinotta, S. Selleri, R. Veneiano, R. Corradini, R. Marchelli, P. Childs and S. Pissadakis “Label-free DNA biosensor based on double tilted fiber Bragg grating” accepted to Photonics West 2012, San Francisco, California, United States of America, 21-26 January 2012, paper 8218-13.

2. A. Candiani, M. Sozzi, E. Coscelli, F. Poli, A. Cucinotta, S. Selleri, R. Veneziano, R. Corradini, R.Marchelli, P. Childs and S. Pissadakis “Optical fiber ring cavity sensor for label-free DNA detection ” accepted to IEEE J. Special Topics Quantum. Electron . on 05/08/11 .

3. A. Candiani, M. Sozzi, A. Cucinotta, R. Veneziano, R. Corradini, R. Marchelli, P. Childs, S.Pissadakis and S. Selleri “Label-free DNA sensor based on a double Tilted Fiber Bragg Gratings” accepted to 4th International Workshop on Multianalyte Biosensing Devices, Athens, Greece, 7-8 September, on 27/06/11.

4. P. Childs , A. Candiani, and S. Pissadakis “Optical fiber cladding ring magnetic field sensor” accepted to IEEE Photon. Technol. Lett . on 15/03/11.

5. A.I. Azmi, I. Leung, X.B. Chen, S.L. Zhou, Q. Zhu, K. Gao, P. Childs , and G.D. Peng “Fiber laser based hydrophone systems” accepted to Photonic Sensors on 15/01/11 .

6. A. Candiani, M. Sozzi, E. Coscelli, F. Poli, A. Cucinotta, S. Selleri, R. Veneziano, R. Corradini, R.Marchelli, P. Childs and S. Pissadakis “Double Tilted Fiber Bragg Grating for label-free DNA detection” in International Workshop on Biophotonics 2011 , Parma, Italy, 8-10 June 2011.

7. G.T. Kanellos, D. Tsiokos, N. Pleros, P. Childs , S. Pissadakis, and G. Papaioannou “Enhanced durability FBG-based sensor pads for biomedical applications as human–machine interface surfaces” in International Workshop on Biophotonics 2011 , Parma, Italy, 8-10 June 2011, paper We2.3.

8. A. Candiani, W. Margulis, C. Sterner, M. Konstantaki, P. Childs, and S. Pissadakis “A vectorial magnetometer utilising a microstructured optical fibre Bragg grating infiltrated by a ferrofluid” in CLEO/Europe and EQEC 2011 Conference Digest , Munich, Germany, 22-26 May 2011, paper CH6_3.

9. A. Candiani, W. Margulis, C. Sterner, M. Konstantaki, P. Childs , and S. Pissadakis “Sensing and actuating photonic devices in magnetofluidic, microstructured optical fibre Bragg gratings” in Proceedings of SPIE Optics + Optoelectronics 2011 , Vol. 8073, Prague, Czech Republic, 18-21 April 2011, paper 80732S.

10. P. Childs , A.C.L. Wong, H.Y. Fu, Y.B. Liao, H.Y. Tam, C. Lu, and P.K.A. Wai “Fourier analysis for hydrostatic pressure sensing in polarization-maintaining photonic crystal fiber” in Appl. Opt. , Vol. 49, Iss. 36, pp. 6861-6867, Dec. (2010).

11. P. Childs , X.J. Yu, A.C.L. Wong, Y.B. Liao, and G.D. Peng “Fourier and wavelet analysis for optical fibre sensor networks: A review” in Intl. J. Microwav. Optical Technol. , Vol. 5, No. 6, pp . 474-482, Nov. (2010).

12. P. Childs , A.C.L. Wong, B.B. Yan, M. Li, and G.D. Peng “A review of spectrally coded multiplexing techniques for fibre grating sensor systems” in Meas. Sci. Technol . , Vol. 21, Iss. 9, Sep. (2010) paper 094007.

13. B.B. Yan, P.A. Childs , C.X. Yu, X.Z. Sang, D.X. Xu, and G.D. Peng “Spectrally coded multiplexing based on FBG pairs” in Progress in Electromagnetics Research Symposium , Cambridge, USA, 5-8 July 2010, pp. 896-899.

14. A.I. Azmi, I. Leung, P. Childs and G.D. Peng “Composite cavity fiber laser for sensor applications” in Sensors & Transducers , Vol. 116, Iss. 5, pp. 1-12, May (2010) .

15. P. Childs , and Y.B. Liao “On the multiplexed limit capacity of spectrally overlapped continuous wave fibre Bragg grating sensor networks” in J. Opt. , Vol. 12, Iss. 1, Jan. (2010) paper 015404 .

16. X.J. Yu, P. Childs , M. Zhang, L.W. Wang, Y.B. Liao, J. Ju, and W. Jin “Relative humidity sensor based on cascaded long-period gratings with hydrogel coatings and Fourier demodulation” in IEEE Photon. Technol. Lett . , Vol 21, Iss 24, pp. 1828-1830, Dec. (2009).

17. P. Childs, X.J. Yu, A.C.L. Wong, Y.B. Liao, and G.D. Peng “Fourier analysis for optical fibre sensor networks” in 12th International Symposium on Microwave and Optical Technology, New Delhi, India, 16-19 December 2009.

18. X.J. Yu, M . Zhang, P. Childs , L.W. Wang, S.R. Lai, and Y.B. Liao “Characteristics analysis of cascaded long-period gratings with nm-thick film coating” in Proceedings of SPIE , International conference on Optical Instrumentation and Technology , Vol. 7508, Shanghai, China, 19-22 October 2009, paper 75081N.

19. P. Childs , A.C.L. Wong, B.B. Yan, M. Li, and G.D. Peng “Spectrally coded multiplexing for fibre grating sensor systems” in Proceedings of SPIE, 20 th International Conference on Optical Fibre Sensors , Vol . 7503 , (2009), Edinburgh, Scotland, United Kingdom, 5-9 October 2009, paper 75032H.

20. H.Y. Fu, A.C.L. Wong, P.A. Childs , H.Y. Tam, Y.B. Liao, C. Lu, and P.K.A. Wai “Multiplexing of polarization-maintaining photonic crystal fiber based Sagnac interferometric sensors” in Opt . Express , Vol. 17, Iss. 21, pp. 18501-18512, Oct. (2009) .

21. X.J. Yu, M. Zhang, P. Childs , L. Wang, M. Lei, Y.B. Liao, J. Ju and W. Jin “Research on testing the characteristics of hydrogel film by using a long-period fiber grating” in Appl. Opt . , Vol. 48, Iss . 11, pp. 2171-2177, Apr. (2009).

22. P. Childs , K. Gao, and G.D. Peng “Multiplexed Moir Long Period Grating temperature sensors” in J. Lightw. Technol . , Vol. 26, Iss. 17, pp. 3173-3180, Sep. (2008).

23. P. Childs , A.C.L. Wong, I. Leung, G.D. Peng, and Y.B. Liao “ An In-Line In-Fibre Ring Cavity Sensor for Localized Multi-Parameter Sensing ” in Meas. Sci. Technol . , Vol. 19, Iss. 6, Jun. (2008) paper 065302.

24. P. Childs , A.C.L. Wong, W. Terry, and G.D. Peng “Measurement of crack formation in concrete using embedded optical fibre sensors and differential strain analysis” in Meas. Sci. Technol . , Vol . 19, Iss. 6, Jun. (2008) paper 065301.

25. I. Leung, P. Childs , and G.D. Peng “Long-cavity-length composite-cavity fibre laser with single longitudinal mode and narrow linewidth” in Proceedings of SPIE, Photonics Asia Conference on Information Optics and Photonics Technology , Vol. 6830 (2007), Beijing, China, 11-17 November 2007, paper 68301V.

26. A.C.L. Wong, P.A. Childs , and G.D. Peng “Multiplexing technique using amplitude-modulated chirped fibre Bragg gratings with applications in two-parameter sensing” in Proceedings of SPIE , Photonics Asia Conference on Information Optics and Photonics Technology , Vol. 6830 (2007) , Beijing, China, 11-17 November 2007, paper 683010.

27. P. Childs , and G.D. Peng “Processing techniques for compensating for multiple scattering in TDM and other spectrally shadowed systems” in Proceedings of SPIE, Photonics Asia Conference on Information Optics and Photonics Technology, Vol. 6830 (2007), Beijing, China, 11-15 November 2007, paper 68300W.

28. P. Childs , K. Gao, and G.D. Peng “Experimental study of the thermal properties of Moir Long Period Gratings” in Proceedings of SPIE, Photonics Asia Conference on Information Optics and Photonics Technology , Vol. 6830 (2007), Beijing, China, 11-15 November 2007, paper 683006.

29. P. Childs , I. Leung, A.C.L. Wong, and G.D. Peng “An in-line in-fibre ring cavity multiparameter sensor with a tuneable refractive index response” in Proceedings of SPIE, Photonics Asia Conference on Information Optics and Photonics Technology , Vol. 6830 (2007), Beijing, China, 11-15 November 2007, paper 683004.

30. A.C.L. Wong, P.A. Childs , and G.D. Peng “Spectrally -overlapped chirped fibre Bragg grating sensor system for simultaneous two-parameter sensing” in Meas. Sci. Technol . , Vol. 18, Iss. 12, pp . 3825-3832, Dec. (2007).

31. W. Jing, G.D. Peng, P. Childs, J. Zhang, K. Liu, D. Jia, and Y. Zhang “A quasi-distributed dynamic and static strain sensor system” in 2006 Bilateral China-Italy Workshop on Photonics for Communication and Sensing, Xi’an, China, 23-24 October 2007, paper Tu2.2.

32. A.C.L. Wong, P.A. Childs , and G.D. Peng “Multiplexing technique using amplitude-modulated chirped fiber Bragg gratings” in Opt. Lett. , Vol. 32, Iss. 13, pp. 1887-1889, Jul. (2007) .

33. A.C.L. Wong, P. Childs , G.D. Peng, and N. Gowripalan “Simultaneous measurement of shrinkage and temperature of reactive powder concrete at early-age using fibre Bragg grating sensors” in Cem. Concr. Compos . , Vol. 29, Iss. 6, pp. 490-497, Jul. (2007) .

34. A.C.L. Wong, P.A. Childs , W. Terry, N. Gowripalan, and G.D. Peng “Experimental investigation of drying shrinkage and creep of concrete using fibre-optic sensors” in Adv. Struct. Eng. , Vol. 10 , Iss. 3, pp. 219-228, Jun. (2007).

35. P. Childs , A.C.L. Wong, N. Gowripalan, and G.D. Peng “Measurement of the coefficient of thermal expansion of ultra-high strength cementitious composites using fibre optic sensors” in Cem. Concr. Res . , Vol. 37, Iss. 5, pp. 789-795, May. (2007) .

36. A. Wong, P. Childs , N. Gowripalan, and G.D. Peng “Monitoring of shrinkage and creep of concretes using fibre Bragg grating sensors” in Proc. ICOCN/ATFO , pp. 480-483 (2006) .

37. K. Gao, Q. Zhu, Paul C . , G.H. Chen, and G.D. Peng “Experimental study of long-period moire gratings” in Chin. J. Lasers. , Vol. 33, Iss. 7, pp. 933-936, Jul. (2006). (in chinese)

38. P. Childs , and G.D. Peng “Simultaneous detection of eight spectrally overlapping carrier modulated Fibre Bragg Gratings” in Electron. Lett . , Vol. 42, Iss. 5, pp. 274-275, Mar. (2006) .

39. P. Childs , A.C.L. Wong, and G.D. Peng “A strain sensor system based on carrier modulated gratings for the monitoring of a large number of channels” in J. Lightw. Technol . , Vol. 24, Iss. 3 , pp. 1388-1394, Mar. (2006).

40. A .C.L. Wong, P. Childs , and G.D. Peng “Multiplexed fibre Fizeau interferometer and fibre Bragg grating sensor system for simultaneous measurement of quasi-static strain and temperature using discrete wavelet transform” in Meas. Sci. Technol . , Vol. 17, Iss. 2, pp. 384-392, Feb. (2006) .

41. A.C.L. Wong, P. Childs , and G.D. Peng “Simultaneous demodulation technique for a multiplexed fibre Fizeau interferometer and a fibre Bragg grating sensor system” in Opt. Lett . , Vol. 31, Iss. 1 , pp. 23-25, Jan. (2006).

42. E. Karamehmedović, P. Childs, T. Whitbread, A. Wong, N. Gowripalan, and G. D. Peng, “Field test of strain fluctuation in the experimental reactive powder concrete bridge at Shepherd’s creek” in OSA Topical Meeting on Bragg Gratings, Poling and Photosensitivity (BGPP) and Australian Conference on Optical Fibre Technology (ACOFT), Sydney, Australia, 4-8 July 2005, pp. 543-545.

43. Z. Brodzeli, A. Buryak, P. Childs, T. Whitbread, K. Kolossovski, R. Sammut, and F. Ladouceur, “Novel technique for fabrication of Extra-Long FBGs” in OSA Topical Meeting on Bragg Gratings, Poling and Photosensitivity (BGPP) and Australian Conference on Optical Fibre Technology (ACOFT), Sydney, Australia, 4-8 July 2005, pp. 49-51.

44. P. Childs “An FBG sensing system utilizing both WDM and a novel harmonic division scheme” in J. Lightw. Technol . , Vol. 23, No. 1, pp. 348-354, Jan. (2005) ; “Erratum” Vol. 23, Iss. 2, pp. 931, Feb. (2005).

45. P. Childs , T. Whitbread, and G. D. Peng, “Spectrally coded multiplexing in a strain sensor system based on carrier-modulated fibre Bragg gratings” in Proceedings of SPIE, Photonics Asia Conference on Information Optics and Photonics Technology , Vol 5634 (2005), Beijing, China, 8- 12 November 2004, pp. 204-210.

Book Chapters

1. A.C.L. Wong, P. Childs , and G.D. Peng “Spectrally Coded Multiplexing Techniques in Fibre optic Sensor Systems” in Trends in Photonics: 2008 (ed. J. Canning), chapter 8, (Kerala: Research Signpost).

Software Development

1. https://github.com/pchilds/MOFsim Graphical User Interface front-end for Finite Difference Time Domain analysis of micro-structured optical fibre.

2. https://github.com/pchilds/Harmonic Harmonic domain signal processing utility

WDsentinal
muppetcakes
p4 189
EngineerIsHere
i7 Bots
FLIR_T301 flexcam3
p4 358
mobilityimpairedaccess
CT002
20091203_919
FIP2400
NDIBS   About us   Fire Safety   Cooling Water Systems   Accessability   Thermographic-Infrared & Other   Presentations   Maintenance Advice   Contact us   Customer  Portal   Site Map 

Copywrite (C) - NEW DIRECTIONS INTERNATIONAL BUSINESS SERVICES PTY LIMITED - ABN.49.083.183.751