Abstract

A novel differential mode delay (DMD) measurement technique for a multimode optical fiber based on optical frequency domain reflectometry (OFDR) has been proposed. We have obtained a high-resolution DMD value of 0.054 ps/m for a commercial multimode optical fiber with length of 50 m by using a modified OFDR in a Mach-Zehnder interferometer structure with a tunable external cavity laser and a Mach-Zehnder interferometer instead of Michelson interferometer. We have also compared the OFDR measurement results with those obtained using a traditional time-domain measurement method. DMD resolution with our proposed OFDR technique is more than an order of magnitude better than a result obtainable with a conventional time-domain method.

© 2005 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |

  1. P. F. Kolesar and D. J. Mazzarese, �??Understanding Multimode Bandwidth and Differential Mode Delay Measurements and Their Applications,�?? in Proc. of the 51st International Wire and Cable Symposium of IWCS Inc., Lake Buena Vista, FL, 453�??460 (2002).
  2. C.-A. Bunge, J.-R. Kropp, and K. Petermann, �??Applicability of DMD-Measurements to New 10-Gigabit-Ethernet Fibres,�?? in Proc. 27th Eur. Conf. on Opt. Comm. (ECOC�??01), Amsterdam, The Netherlands, 362�??363 (2001).
  3. TIA-455-220-A, Differential Mode Delay Measurement of Multimode Fiber in the Time Domain, Telecommunication Industry Association (2003)
  4. T.-J. Ahn, S. Moon, Y. Youk, Y. Jung, K. Oh, and D.Y. Kim, �??Modal delay measurement of a few-mode fiber by using an optical frequency domain reflectometer,�?? in Proc. CLEO/QELS�??05, Baltimore, USA, JthE5 (2005).
  5. T.-J. Ahn, S. Moon, Y. Youk, Y. Jung, K. Oh, and D.Y. Kim, �??New optical frequency domain differential mode delay measurement method for a multimode optical fiber,�?? Opt. Express 13, 4005-4011 (2005). <a href="http://www.opticsexpress.org/abstract.cfm?URI=OPEX-13-11-4005.">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-13-11-4005.</a>
    [CrossRef] [PubMed]
  6. U. Glombitza and E. Brinkmeyer, �??Coherent Frequency-Domain Reflectometry for Characterization of Single-Mode Integrated-Optical Waveguides,�?? J. Lightwave Technol. 11, 1377�??1384 (1993).
    [CrossRef]
  7. K. Shimizu, T. Horiguchi and Y. Koyamada, �??Measurement of Rayleigh Backscattering in Single-Mode Fibers Based on Coherent OFDR Employing a DFB Laser Diode.�?? IEEE Photon. Technol. Lett. 3, 1039�??1041 (1991).
    [CrossRef]
  8. D. Derickson, Fiber optic test and measurement, Hewlett-Packard professional books, Prentice Hall PTR, Upper Saddle River, New Jersey, 1998, USA, Chap. 10.
  9. L. Jeunhomme and J.P. Pocholle, �??Selective mode excitation of graded index optical fibers,�?? Appl. Opt. 3, 463-468 (1978)
    [CrossRef]

27th Eur. Conf. on Opt. Comm. (1)

C.-A. Bunge, J.-R. Kropp, and K. Petermann, �??Applicability of DMD-Measurements to New 10-Gigabit-Ethernet Fibres,�?? in Proc. 27th Eur. Conf. on Opt. Comm. (ECOC�??01), Amsterdam, The Netherlands, 362�??363 (2001).

51st International Wire and Cable Sympos (1)

P. F. Kolesar and D. J. Mazzarese, �??Understanding Multimode Bandwidth and Differential Mode Delay Measurements and Their Applications,�?? in Proc. of the 51st International Wire and Cable Symposium of IWCS Inc., Lake Buena Vista, FL, 453�??460 (2002).

Appl. Opt. (1)

L. Jeunhomme and J.P. Pocholle, �??Selective mode excitation of graded index optical fibers,�?? Appl. Opt. 3, 463-468 (1978)
[CrossRef]

CLEO/QELS (1)

T.-J. Ahn, S. Moon, Y. Youk, Y. Jung, K. Oh, and D.Y. Kim, �??Modal delay measurement of a few-mode fiber by using an optical frequency domain reflectometer,�?? in Proc. CLEO/QELS�??05, Baltimore, USA, JthE5 (2005).

IEEE Photon. Technol. Lett. (1)

K. Shimizu, T. Horiguchi and Y. Koyamada, �??Measurement of Rayleigh Backscattering in Single-Mode Fibers Based on Coherent OFDR Employing a DFB Laser Diode.�?? IEEE Photon. Technol. Lett. 3, 1039�??1041 (1991).
[CrossRef]

J. Lightwave Technol. (1)

U. Glombitza and E. Brinkmeyer, �??Coherent Frequency-Domain Reflectometry for Characterization of Single-Mode Integrated-Optical Waveguides,�?? J. Lightwave Technol. 11, 1377�??1384 (1993).
[CrossRef]

Opt. Express (1)

Other (2)

D. Derickson, Fiber optic test and measurement, Hewlett-Packard professional books, Prentice Hall PTR, Upper Saddle River, New Jersey, 1998, USA, Chap. 10.

TIA-455-220-A, Differential Mode Delay Measurement of Multimode Fiber in the Time Domain, Telecommunication Industry Association (2003)

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (3)

Fig. 1.
Fig. 1.

Experimental set-up for modified OFDR system for DMD measurement of a multimode fiber.

Fig. 2.
Fig. 2.

(a) Beating signal of a MMF by using modified OFDR without an offset and (b) beating spectrum from Fourier transformation of the signal

Fig. 3.
Fig. 3.

(a) Modal delay measurements of an MMF in time domain using an optical pulse source(sample length is 450 m), and (b) frequency domain using an modified OFDR (sample length is 50 m)

Equations (1)

Equations on this page are rendered with MathJax. Learn more.

τ = f γ = f Δυ / T ,

Metrics