Last updated: 09.10.2007

TINKO A. E FTIMOV

Personal Data

Born  : 30 October, 1955 , Plovdiv , Bulgaria

Status : Married with three children

Citizenship : Bulgarian and Canadian

Residence : Hull , Quebec , Canada and Plovdiv , Bulgaria

Educational Background :

• 1969-1975 English Language School, Rousse , Bulgaria
• 1972-1973 French Lyceum, Algiers, Algeria
• 1982 M.S. from Faculty of Physics, Department of Quantum Electronics, Sofia University ‘St. Kliment Ohridski’, Bulgaria
• 1989 Ph.D. from Institute of Applied Physics, Technical University, Sofia, Bulgaria

Employment History

• 1986 – 1990 Assistant and Senior Assitant Professor at the Institute of Applied Physics, Technical University , Sofia , Bulgaria

• 1990-1991 Researcher and Lecturer at the Communications Laboratory, Helsinki University of Technology , Finland

• 1991-1993 NSERC Posdoctoral Research Fellow, Optoelectronics Laborarory, University of Quebec at Hull , Hull , Quebec , Canada

• 1995-1995 Senior Assitant Professor at the Institute of Applied Physics, Technical University , Sofia , Bulgaria

• 1995-1997 Research Fellow, Optoelectronics Laborarory, University of Quebec at Hull , Hull , Quebec , Canada

• 1997-2001 Product engineer, R&D Department, JDS Uniphase Corp, Ottawa ( Nepean ), Ontario , Canada

• Since 2002 Professor at the Computer and Engineering Department of the University of Quebec at Hull , Quebec , Canada

Teaching experience :

• Technical University , Sofia , Bulgaria General Physics
• Communications Laboratory, Helsinki University of Technology Fibre Optic Communication Systems
• University of Quebec at Hull , Canada Statistics for Engineers Probability for Computer Sciences Statistics and Applications Material Sciences Design and Simulation of Advanced Optical Communication systems

Research Interests

Polarization and coherence phenomena in optical fibers

Interference in optical fibres

Mueller-Stokes matrix formalism

Fibre Optic Sensors

Components for the fibre optic sensor and communication industry

Reliability of fibre-optic components

Publications

Over 40 journal and conference papers in the areas of research interests as well as three patents.

Other interests :

History, civilizations, ancient mythology.

Bulgarian history, studies and organizations abroad.

Former president (1999-2001) of the National Region Bulgarian Community in Ottawa-Hull , Canada .

List of Publications

Journal papers

1. W.J. BOCK, T.A.EFTIMOV "Polarization-Sensitive Intermodal All-Fiber Sensor Using Spectrally Resolved Detection”, IEEE Trans. on Instrum. and Mesurement, Vol. 49, No. 2, pp. 405-408, April (2000).

2. W.J. BOCK, T.A.EFTIMOV, "Low noise Bimodal All-fiber Sensor Using Depolarized Light", J. Mod. Optics, (1999).

3. W.J. BOCK, T.A.EFTIMOV, G.F.MOLINAR and R.WISNIEWSKI, " Free Active Element Bulk - Modulus High Pressure Transducer Based On Fiber Optic Displacement Sensor", IEEE Trans. Instrum. Meas., Vol 47, No. 3, pp. 179-182, (1998).

4. W.J. BOCK, T.A.EFTIMOV, R. WISNIEWSKI, "A differential fiber-optic transducer for hydrostatic pressure measurement", Sensors and Actuators, A70, pp. 238-242, (1998).

5. T.A.EFTIMOV and W.J. BOCK, "Analysis of the Polarization Behaviour of Hybrid Modes in Highly Birefringent Fibers, Journ. Lighwave Technol., Vol. 16, No.6, pp.998 – 1005, June (1998).

6. T.A.EFTIMOV and W.J. BOCK, "Polarizer and Analyzer-induced noise in fiber-optic polarization sensitive intermodal interferometers", Journ. Lighwave Technol., Vol. 15, No.7, pp.1110 – 1119, July (1997).

7. W.J. BOCK, T. WOLINSKI and T.A.EFTIMOV "Polarimetric fiber-optic strain gauge using two-mode highly birefringent fibers", Pure and Applied Optics: Journal of the European Optical Society, Vol. 5, pp. 125-139, (1996).

8. T.EFTIMOV, "LP 01-LP 11 intermodal interference in highly birefringent two-mode fibers with differential LP 11 polarization-mode attenuation", J.Mod. Optics, Vol. 42, No. 3, pp. 541-564, (1995).

9. W.J. BOCK, E. PORADA, M.BEAULIEU and T.A.EFTIMOV, "Automatic Calibration of a Fiber-Optic Strain Sensor Using a Self-Learning System", IEEE Trans. on Instrum. and Mesurement, Vol. 43, No. 2, pp. 341-346, (1994).

10. W.J.BOCK and T.A.EFTIMOV, "Simultaneous Hydrostatic Pressure and Temperature Measurement Employing an LP 01-LP 11 Fiber-Optic Polarization-Sensitive Intermodal Interferometer", IEEE Trans. on Instrum. and Mesurement, Vol. 43, No. 2, pp. 337-340, (1994).

11. W.J.BOCK and T.A.EFTIMOV, "Polarimetric and intermodal interference sensitivity to hydrostatic pressure, temperature, and strain of highly birefringent optical fibers", Opt. Lett., Vol. 18, No. 22, pp. 1979-1981, (1993).

12. W.J.BOCK and T.A.EFTIMOV, "Single- and Few-Mode Fiber-Optic Pressure Sensors", Invited paper in the book: APPLICATION OF FIBER OPTIC SENSORS IN ENGINEERING MECHANICS, A collection of state-of-the-art papers, Ed. by Farhad Ansari, New York, pp. 252-263, (1993).

13. T.A.EFTIMOV and W.J.BOCK, "Sensing with a LP 01-LP 02 Intermodal Interferometer", J. Lightwave Technol., Vol. 11, No. 12, pp. 2150-2156, (1993).

14. T.A.EFTIMOV and W.J.BOCK, "Polarization Analysis of LP 01 and LP 11 Intermodal Interference in Highly Birefringent Bow-Tie Optical Fibers", J. Lightwave Technol., Vol. 11, No. 12, pp. 1925-1936, (1993).

15. T.EFTIMOV and P.HITCHEN, "Resultant numerical aperture of microlens-ended optical fibers", Int. J. Optoelectron., Vol. 8, No. 2, pp. 123-132, (1993).

16. T.A.EFTIMOV and W.J.BOCK, "Experimental investigation of single-mode single-polarization optical fiber", Opt. Lett., Vol. 17, No. 15, pp. 1061-1063, (1992).

17. T.A.EFTIMOV and K.TSALIKIAN, "State and degree of polarization along ingle-polarization optical fibres with random perturbations", Opt. and Quantum Electron., Vol. 24, pp. 677-690, (1992).

18. T.EFTIMOV, "Matrix description of mode coupling along parallel fibre-optic structures", Int. J. Optoelectron., Vol. 7, No. 6, pp. 723-751, (1992).

19. T.EFTIMOV, "An experimental study of mode coupling in few-mode fiber-optic couplers by means of selective excitation", Int. J. Optoelectron., Vol. 7, No. 2, pp. 285-294, (1992).

20. P. DINEV , T.KORTENSKI, T.EFTIMOV and V. STANCHEVA, “Fibre-optic Sensors for linear and angular Displacements”, Bulg. J. Physics, Vol. 18, pp. 221-225, (1991)

21. T.A.EFTIMOV, "Resultant mode pattern and polarization in a LP 01-LP 02 two-mode linearly birefringent optical fiber", Optical and Quantum Electron., Vol. 23, pp. 1143-1160, (1991).

22. T.EFTIMOV, T.KORTENSKI and T. VULKOVA, "Investigation of optical tapers by means of selective mode excitation", Int. J. Optoelectron., Vol. 6, No. 6, pp. 553-564, (1991).

23. T.EFTIMOV, T.KORTENSKI and D.DIMITROV "A Muller-Stokes study of polarization-mode transformation in randomly perturbed optical fibres", J. Mod. Optics, Vol. 38, No. 3, pp.519-545, (1991).

24. T.KORTENSKI, T.EFTIMOV and T. VULKOVA, "A Muller-Stokes description f polarization phenomena in uniformly anisotropic single-mode single-polarization optical fibers in the quasimonochromatic case", Int. J. Optoelectron., Vol. 5, No. 4, p.303-318, (1990).

25. T.KORTENSKI and T.EFTIMOV, "A Muller-Stokes description of polarization -mode transformation in uniformly perturbed optical fibres", J. Mod. Optics, Vol. 37, No. 9, p.1413-1437, (1990).

26. T.EFTIMOV and T.KORTENSKI, “State of Polarization in open- and closed-loop helices of singlemode fibers”, J. Mod. Optics, Vol. 36, No. 3, p.287-304, (1989).27. T.KORTENSKI, T.EFTIMOV, T. DINEVA and N. NAIDENOV, “Radiation attenuation in Optical Fibers with Temperature Variation” Bulg. J. Physics, Vol. 16, pp. 300-310, (1989)

28. T.KORTENSKI, T. DINEVA, T.EFTIMOV, P. DINEV and V. STANCHEVA, “Influence of temperature on the frequency bandwidth of optical cables”, University annual, Technical Physics, Vol. 26, book 1, p. 191-200, (1989).

29. T.KORTENSKI, I.K. ILEV,and T.EFTIMOV, I. KOPRINKOV and P. DINEV, “Wide band Stokes-anti-Stokes Frequencey Conversion in Conventional Multimode Optical Fibers”, Bulg. J. Phys., Vol. 15, p. 65, (1988)

30. T.EFTIMOV, and T.KORTENSKI “Behaviour of Optical Fiber Sensor for Angular Displacement Based on Mode Pattern Rotation Effect at Different Mode Orders”, Bulg. J. Physics, Vol. 14, pp. 553-558, (1987).

31. T.EFTIMOV, and T.KORTENSKI “Mode Pattern Rotation Effect in Helices of Multimode Optical Fibers”, Bulg. J. Physics, Vol. 14, pp. 456-466, (1987).

32. T.KORTENSKI and T.EFTIMOV, “Description of the Polarization of a Quasimonochromatic Light Along a Perturbed Single-Mode Fiber using Stokes Parameters”, University annual, Technical Physics, Vol. 23, book 1, p. 175-188, (1986).

33. T.KORTENSKI and T.EFTIMOV, “A Generalized Model for Mode Coupling Centres in Single-Mode Optical Fibers with Random Perturbations”, Bulg. J. Phys., Vol. 13, pp. 156-166, (1986).

34. T.KORTENSKI and T.EFTIMOV, “Muller Matrix for a perturbed Single-Mode Fiber Taking into Account the Depolarization”, Bulg. J. Phys., Vol. 12, pp. 301-312, (1985).

Conference papers

35. W.J. BOCK, T.A.EFTIMOV "Polarization-Sensitive Intermodal All-Fiber Sensor Using Spectrally Resolved Detection”, Proc. IEEE T Instrum. and Meas. Technol. Conf., Venise, Italie, pp. 1603-1607, 24-28 mai, (1999).

36. T.A.EFTIMOV, M.C.FARRIES, S. HUANG, N. DURICIC, D. GROBNIC, B. KEYWORTH and J.S. OBHI, " 8-Channel Tunable Drop Device with Thermal Tuning for 100 GHz Channel Spacing", ECOC'98, 20-24 September, Madrid, Spain, 1998, p. 127-128.

37. BOCK, W.J., EFTIMOV, T.A., HYETT, A., " Wide range Fiber-Optic Sensor Based on LP 01 Mode Evanescence" Proc. IEEE Instrum. & Meas. Technol. Conf., Minessota, USA, pp. 1158-1161, 18-20 May, 1998.

38. W.J. BOCK, T.A.EFTIMOV, G.F.MOLINAR and R.WISNIEWSKI, " Free Active Element Bulk - Modulus High Pressure Transducer Based On Fiber Optic Displacement Sensor" IEEE Instrumentation & Measurement Technology Conference, Ottawa, May 19-21, Vol II, Canada, (1997).

39. W.J.BOCK, W.URBANCZYK, T.A.EFTIMOV and J.CHEN, "Development and performance of fiber-optic sensors for absolute and quasi-static measurements in civil engineering applications", (Invited presentation to the International Conference on Applications of Photonics Technology 1996 (ICAPT'96), Montreal, Canada (1996).

40. W.J.BOCK and T.A.EFTIMOV, "Simultaneous Hydrostatic Pressure and Temperature Measurement Employing an LP 01-LP 11 Fiber-Optic Polarization -Sensitive Intermodal Interferometer", Conference Record from "IEEE Instrumentation and Measurement Technology Conference", IEEE Catalog No. 93CH3292-0, pp. 426-429, (1993).

41. W.J.BOCK and T.A.EFTIMOV, "Strain Sensor Based on LP 01-LP 02 Intermodal Interference in Highly Birefringent Optical Fibers", Proceedings from SPIE "Fiber Optic and Laser Sensors XI",Conference, Boston, Massachusetts, 7-8 September, Vol. 2070, pp. 65-72, (1993).

42. W.J.BOCK and T.A.EFTIMOV, "Performance of an all-fiber pressure sensor employing polarizing fibers", Proceedings from SPIE "Fiber Optic and Laser Sensors X ",Conference, Boston, Massachusetts, 8-11 September, Vol. 1795, pp. 8-15, (1992).

43. T.KORTENSKI and T.EFTIMOV, "State of polarization in randomly perturbed single-mode fibers near LP11-mode cut-off”, Fourth National conference on OPTICS AND LASER ENGINERING, OPTICS’89, Varna, Bulgaria, May 18-20, pp.34-46 (1989). (In Bulgarian)

44. T.KORTENSKI, I.K. ILEV, I. KOPRINKOV and T.EFTIMOV, “Backscattering of light pulses in optical fibers” Fourth National conference on OPTICS AND LASER ENGINERING, OPTICS’89, Varna, Bulgaria, May 18-20, (1988). (in Bulgarian)

45 T.KORTENSKI and T. EFTIMOV, “State of polarization at Higher-order LP-mode Pattern otatyion in Helices of Multimode Optical fibers”, Proc. Of the III National Conference “Optics’87’, Varna, Vol. 1, p. 180, (1987)

46. T.KORTENSKI, I.K. ILEV,and T. EFTIMOV and I. KOPRINKOV, Generation of a wide band stimulated Raman spectrum in conventional optical fibers”, Proc. Of the III National Conference “Optics’87’, Varna, May 18-20, (1987) in Bulgarian

47. T. EFTIMOV and T.KORTENSKI, “Polarization preservation along birefringent W-type Multimode Optical Fibers”, Proc. Of the XXI Session “Radio Day”, Vol. 1, p. 519, (1986) in Bulgarian.

Manual

TINKO A. EFTIMOV, "Design of Fiber-Optic Digital Communication Systems", Communications Laboratory, Helsinki University of Technology, Report 04, 1991, Espoo , Finland

Patent:

HENRY POSTOLEK, GRAHAM IAN DUCK, NENAD DURICIC, GONZALO DE AL PUENTE, TINKO EFTIMOV , DAN GROBNIC, DAVID WILLIAMS, CHARLES MARKIN, EVGUENI A. PONOMAREV, SERGUEI ROUPASSOV and DARIUSZ SIENIAWSKI, ‘Fiber Bragg grating dispersion compensator’, File No: 10-538 US , form January 28, 2002 , Pending.

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