OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 22, Iss. 7 — Jul. 1, 2005
  • pp: 1498–1511

Equalization of Gaussian-like spectra with optical lattice filters

Ying Zhang, Qijie Wang, and Yeng Chai Soh  »View Author Affiliations

JOSA B, Vol. 22, Issue 7, pp. 1498-1511 (2005)

View Full Text Article

Enhanced HTML    Acrobat PDF (218 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We present a filter design scheme in which we use an all-fiber lattice filter to equalize Gaussian-like spectra. With a two-step design strategy, the designed equalization filter can flatten the Gaussian-like spectra in the maximally flat sense, and the spectrum ripples can be assessed quantitatively. The equalization performance is analyzed theoretically. It is also shown that the equalization performance can be improved only with an increased odd order of the lattice filter. As an illustrative example, the proposed scheme is applied to the design of an all-fiber equalization filter to flatten the output spectrum of a superluminescence light-emitting diode. Simulation and experimental results verify the theoretical analysis.

© 2005 Optical Society of America

OCIS Codes
(060.2380) Fiber optics and optical communications : Fiber optics sources and detectors
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(230.1150) Optical devices : All-optical devices
(230.3670) Optical devices : Light-emitting diodes

Ying Zhang, Qijie Wang, and Yeng Chai Soh, "Equalization of Gaussian-like spectra with optical lattice filters," J. Opt. Soc. Am. B 22, 1498-1511 (2005)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. J. Gowar, Optical Communications Systems, 2nd ed. (Prentice-Hall, 1993).
  2. G. Keiser, Optical Fibre Communications, 3rd ed. (McGraw-Hill, 2000).
  3. R. Kashyap, R. Wyatt, and P. F. Mckee, "Wavelength flattened saturated erbium amplifier using multiple side-tap Bragg gratings," Electron. Lett. 29, 1025-1026 (1993). [CrossRef]
  4. P. F. Wysocki, "Broad-band erbium-doped fiber amplifier flattened beyond 40nm using long-period grating filter," IEEE Photonics Technol. Lett. 9, 1343-1345 (1997). [CrossRef]
  5. Y. Sun, J. B. Judkins, A. K. Strivastava, L. Garett, J. L. Zyskind, J. W. Sulhoff, C. Wolf, R. M. Derosier, A. H. Gnauck, R. W. Tkach, J. Zhou, R. P. Espindola, A. M. Vengsarkar, and A. R. Chraplyvy, "Transmission of 32-WDM 0-Gb/s channels over 640km using broad-band, gain-flattened erbium-doped silica fiber amplifiers," IEEE Photonics Technol. Lett. 9, 1652-1654 (1997). [CrossRef]
  6. H. S. Kim, S. H. Yun, H. K. Kim, N. Park, and B. Y. Kim, "Actively gain-flattened erbium-doped fiber amplifier over 35nm by using all-fiber acoustooptic tunable filters," IEEE Photonics Technol. Lett. 10, 790-792 (1998). [CrossRef]
  7. Y. P. Li, C. H. Henry, E. J. Laskowski, C. Y. Mak, H. H. Yaffe, and R. Sweatt, "A waveguide EDFA gain equalization filter," Electron. Lett. 31, 2005-2006 (1996). [CrossRef]
  8. C. R. Doerr, M. Cappuzzo, E. Laskowski, A. Paunescu, L. Gomez, L. W. Stulz, and J. Gates, "Dynamic wavelength equalizer in silica using the single-filtered-arm interferometer," IEEE Photonics Technol. Lett. 11, 581-583 (1999). [CrossRef]
  9. B. J. Offrein, F. Horst, G. L. Bona, R. Germann, H. W. M. Salemink, and R. Beyeler, "Adaptive gain equalizer in high-index-contrast SiON technology," IEEE Photonics Technol. Lett. 12, 504-506 (2000). [CrossRef]
  10. W. Yang, F. Huang, M. R. Fetterman, J. C. Davis, D. Goswami, and W. S. Warren, "Real-time adaptive amplitude feedback in an AOM-based ultrafast optical pulse shaping system," IEEE Photonics Technol. Lett. 11, 1665-1667 (1999). [CrossRef]
  11. Q. J. Wang, Y. Zhang, and Y. C. Soh, "Design of spectrum equalization filter for SLED light source," Opt. Commun. 229, 223-231 (2003). [CrossRef]
  12. K. Jinguji and M. Kawachi, "Synthesis of coherent two-port lattice-form optical delay-line circuit," J. Lightwave Technol. 13, 73-82 (1995). [CrossRef]
  13. C. K. Madsen and J. H. Zhao, Optical Filter Design and Analysis: a Signal Processing Approach (Wiley, 1999). [CrossRef]
  14. M. Kawachi, "Planar lightwave circuits for optical signal processing," in Proceedings of the Asia-Pacific Microwave Conference (IEEE Press, 1994), paper MS2-2, pp. 39-44.
  15. Q. J. Wang, T. Liu, Y. C. Soh, and Y. Zhang, "All-fiber F3T interleaver design with specified performance parameters," Opt. Eng. 42, 3172-3178 (2003). [CrossRef]

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