OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 29, Iss. 34 — Dec. 1, 1990
  • pp: 5170–5176

Fiber optic Fourier transform spectrometer with a coherent interferogram averaging scheme

Kazumasa Takada, Masaru Kobayashi, and Juichi Noda  »View Author Affiliations


Applied Optics, Vol. 29, Issue 34, pp. 5170-5176 (1990)
http://dx.doi.org/10.1364/AO.29.005170


View Full Text Article

Enhanced HTML    Acrobat PDF (899 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

A fiber optic Fourier transform spectrometer capable of coherent interferogram averaging is constructed, for the first time to our knowledge. One fiber arm of the interferometer is periodically stretched, and the amplitudes of the fundamental and second harmonics of the modulation frequency in the photocurrent output are simultaneously detected. Successful operation results from the generation of an external clock for sampling the interferogram from the detected outputs varying in phase quadrature. Even when the moving mirror in the interferometer translates nonlinearly and two fiber arms receive random perturbations independently, sampling can be uniformly performed along the interferogram. From the experiments, variation of sampling start position on each interferogram was limited within 100 nm during one hundred repetitive scans. For 100 coherent averages, therefore, the SNR increased by ~10 without deformation.

© 1990 Optical Society of America

History
Original Manuscript: October 11, 1989
Published: December 1, 1990

Citation
Kazumasa Takada, Masaru Kobayashi, and Juichi Noda, "Fiber optic Fourier transform spectrometer with a coherent interferogram averaging scheme," Appl. Opt. 29, 5170-5176 (1990)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-29-34-5170


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. R. J. Bell, Introductory Fourier-Transform Spectroscopy (Academic, New York, 1972), Chap. 1.
  2. As a method of achieving uniform sampling of an interferogram based on polarization, see, for an example, K. Takada, K. Chida, J. Noda, S. Nakajima, “Development of a Trench Depth Measurement System for VLSI Dynamic Random Access Memory Vertical Capacitor Cells Using an Interferometric Technique With a Michelson Interferometer,” Appl. Opt. 28, 3373–3381 (1989). [CrossRef] [PubMed]
  3. D. A. Jackson, A. Dandridge, S. K. Sheem, “Measurement of Small Phase Shifts Using a Single-Mode Optical-Fiber Interferometer,” Opt. Lett. 5, 139–141 (1980). [CrossRef] [PubMed]
  4. M. Imai, T. Ohashi, Y. Ohtsuka, “Fiber-Optic Michelson Interferometer Using an Optical Power Divider,” Opt. Lett. 5, 418–420 (1980). [CrossRef] [PubMed]
  5. S. K. Sheem, “Fiber-Optic Gyroscope With [3 × 3] Directional Coupler,” Appl. Phys. Lett. 37, 869–871 (1980). [CrossRef]
  6. M. Imai, T. Ohashi, Y. Ohtsuka, “High-Sensitive All-fiber Michelson Interferometer by Use of Differential Output Configuration,” Opt. Commun. 39, 7–10 (1981). [CrossRef]
  7. Th. Niemeier, R. Ulrich, “Quadrature Outputs from Fiber Interferometer with 4 × 4 Coupler,” Opt. Lett. 11, 677–679 (1986). [CrossRef] [PubMed]
  8. A. D. Kersey, A. Dandridge, A. B. Tveten, T. G. Giallorenzi, “Single-mode Fiber Fourier Transform Spectrometer,” Electron. Lett. 21, 463–464 (1985).
  9. A. Dandridge, A. B. Tveten, T. G. Giallorenzi, “Homodyne Demodulation Scheme for Fiber Optic Sensors Using Phase Generated Carrier,” IEEE J. Quantum Electron. QE-18, 1647–1653 (1982). [CrossRef]
  10. D. B. Mortimore, “Wavelength-Flattened Fused Couplers,” Electron. Lett. 21, 742–743 (1985). [CrossRef]
  11. N. Shibata, S. Shibata, T. Edahiro, “Refractive Index Dispersion of Lightguide Glasses at High Temperature,” Electron. Lett. 17, 310–311 (1981). [CrossRef]
  12. E. O. Brigham, The Fast Fourier Transform, (Prentice-Hall, Englewood Cliffs, NJ, 1974), pp. 140–146.

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited