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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 15 — Jul. 23, 2007
  • pp: 9584–9599

Transform-limited picosecond pulse shaping based on temporal coherence synthesization

Yongwoo Park, Mohammad H. Asghari, Tae-Jung Ahn, and José Azaña  »View Author Affiliations

Optics Express, Vol. 15, Issue 15, pp. 9584-9599 (2007)

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A simple and efficient optical pulse re-shaper based on the concept of temporal coherence synthesization is proposed and analyzed in detail. Specifically, we demonstrate that an arbitrary chirp-free (transform-limited) optical pulse waveform can be synthesized from a given transform-limited Gaussian-like input optical pulse by coherently superposing a set of properly delayed replicas of this input pulse, e.g. using a conventional multi-arm interferometer. A practical implementation of this general concept based on the use of conventional concatenated two-arm interferometers is also suggested and demonstrated. This specific implementation allows the synthesis of any desired temporally-symmetric optical waveform with time features only limited by the input pulse bandwidth. A general optimization algorithm has been developed and applied for designing the system specifications (number of interferometers and relative time delays in these interferometers) that are required to achieve a desired optical pulse re-shaping operation. The required tolerances in this system have been also estimated and confirmed by numerical simulations. The proposed technique has been experimentally demonstrated by reshaping an ≈1-ps Gaussian-like optical pulse into various temporal shapes of practical interest, i.e. picosecond transform-limited flat-top, parabolic and triangular pulses (all centered at a wavelength of ≈ 1550nm), using a simple two-stage interferometer setup. A remarkable synthesis accuracy and high energetic efficiency have been achieved for all these pulse re-shaping operations.

© 2007 Optical Society of America

OCIS Codes
(070.2590) Fourier optics and signal processing : ABCD transforms
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
(120.2440) Instrumentation, measurement, and metrology : Filters
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(320.5540) Ultrafast optics : Pulse shaping

ToC Category:
Ultrafast Optics

Original Manuscript: May 21, 2007
Revised Manuscript: July 13, 2007
Manuscript Accepted: July 13, 2007
Published: July 18, 2007

Yongwoo Park, Mohammad H. Asghari, Tae-Jung Ahn, and José Azaña, "Transform-limited picosecond pulse shaping based on temporal coherence synthesization," Opt. Express 15, 9584-9599 (2007)

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  1. F. Parmigiani, P. Petropoulos, M. Ibsen, D. J. Richardson, “All-optical pulse reshaping and retiming systems incorporating pulse shaping fiber Bragg grating,” J. Lightwave Technol. 19, 746–752 (2001).
  2. L. K. Oxenløwe, M. Galili, H. C. H. Mulvad, R. Slavík, Y. Park, J. Azaña, P. Jeppesen, “Flat-top pulse enabling 640 Gb/s OTDM demultiplexing,” Conference on Lasers and Electro-Optics Europe (CLEO-Europe) Munich, Germany, June 2007, Paper CI8-1.
  3. T. Otani, T. Miyajaki, S. Yamamoto, “Optical 3R Regenerator using wavelength converters based on electroabsorption modulator for all-optical network applications,” IEEE Photon. Technol. Lett. 12, 431–433 (2000). [CrossRef]
  4. F. Parmigiani, C. Finot, K. Mukasa, M. Ibsen, M. A. Roelens, P. Petropoulos, D. J. Richardson, “Ultra-flat SPM-broadened spectra in a highly nonlinear fiber using parabolic pulses formed in a fiber Bragg grating,” Opt. Express 14, 7617–7622 (2006). [CrossRef] [PubMed]
  5. A. M. Weiner, “Femtosecond optical pulse shaping and processing,” Prog. Quantum Electron. 19, 161–237 (1995). [CrossRef]
  6. T. Kurokawa, H. Tsuda, K. Okamoto, K. Naganuma, H. Takenouchi, Y. Inoue, M. Ishii, “Time-space conversion optical signal processing using arrayed-waveguide grating,” Electron. Lett. 33, 1890–1891 (1997). [CrossRef]
  7. P. Petropoulos, M. Ibsen, A. D. Ellis, D. J. Richardson, “Rectangular pulse generation based on pulse reshaping using a superstructured fiber Bragg grating,” J. Lightwave Technol. 19, 746–752 (2001). [CrossRef]
  8. Y. Park, M. Kulishov, R. Slavík, J. Azaña, “Picosecond and sub-picosecond flat-top pulse generation using uniform long-period fiber gratings,” Opt. Express 14, 12670–12678 (2006). [CrossRef] [PubMed]
  9. Y. Park, J. Azaña, “Optical pulse shaping technique based on a simple interferometry setup,” in Proc. of IEEE LEOS 2006 Annual Meeting. Paper TuN2, pp. 274–275.
  10. V. Narayan, D. L. MacFarlane, “Bursts and codes of ultrashort pulses,” IEEE Photon. Technol. Lett. 5, 1465–1467 (1993). [CrossRef]
  11. M. Shen, R. A. Minasian, “Toward a high-speed arbitrary waveform generation by a novel photonic processing structure,” IEEE Photon. Technol. Lett. 16, 1155–1157 (2004). [CrossRef]
  12. C. K. Madsen, J. H. Zhao, Optical Filter Design and Analysis: A Signal Processing Approach, (John Wiley & Sons, New York, 1999).
  13. I. Glover, P. Grant, Digital Communications (Pearson Education Ltd., 2004).
  14. L. Lepetit, G. Chériaux, M. Joffre, “Linear technique of phase measurement by femtosecond spectral interferometry for applications in spectroscopy,” J. Opt. Soc. Am. B 12, 2467–2474 (1995). [CrossRef]
  15. Y. Park, F. Li, J. Azaña, “Characterization and optimization of optical pulse differentiation using spectral interferometry,” IEEE Photon. Technol. Lett. 18, 1798–1800 (2006). [CrossRef]

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