OSA's Digital Library

Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 6 — Mar. 25, 2013
  • pp: 7521–7527

A continuously tunable multi-tap complex-coefficient microwave photonic filter based on a tilted fiber Bragg grating

Hiva Shahoei and Jianping Yao  »View Author Affiliations

Optics Express, Vol. 21, Issue 6, pp. 7521-7527 (2013)

View Full Text Article

Enhanced HTML    Acrobat PDF (989 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



The coupling coefficients of the cladding-mode resonances of a tilted fiber Bragg grating (TFBG) are linearly increasing or decreasing in different wavelength regions. Based on the Kramers-Kronig relations, when the coupling coefficients are linearly increasing, the phase shifts are linearly increasing correspondingly. This feature is employed, for the first time, for the implementation of a multi-tap continuously tunable microwave photonic filter with complex coefficients by using a TFBG. By locating the optical carriers of single-sideband-modulated signals at the cladding-mode resonances of the TFBG which has linearly increasing depths, linearly increasing phase shifts are introduced to the optical carriers. By beating the optical carriers with the single sidebands, the phase shifts are translated to the microwave signals, and thus complex coefficients with the required linearly increasing phase shifts are generated. The tunability of the complex coefficients is realized by optically pumping the TFBG which is written in an erbium/ytterbium (Er/Yb) co-doped fiber. A proof-of-concept experiment is performed; a three- and four-tap filter with a frequency tunable range of 150 and 120 MHz, respectively, are demonstrated.

© 2013 OSA

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(350.4010) Other areas of optics : Microwaves
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: December 27, 2012
Revised Manuscript: February 23, 2013
Manuscript Accepted: March 7, 2013
Published: March 19, 2013

Hiva Shahoei and Jianping Yao, "A continuously tunable multi-tap complex-coefficient microwave photonic filter based on a tilted fiber Bragg grating," Opt. Express 21, 7521-7527 (2013)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. A. J. Seeds and K. J. Williams, “Microwave Photonics,” J. Lightwave Technol.24(12), 4628–4641 (2006). [CrossRef]
  2. J. P. Yao, “Microwave photonics,” J. Lightwave Technol.27(3), 314–335 (2009). [CrossRef]
  3. J. Capmany, B. Ortega, and D. Pastor, “A tutorial on microwave photonic filters,” J. Lightwave Technol.24(1), 201–229 (2006). [CrossRef]
  4. R. A. Minasian, “Photonic signal processing of microwave signals,” IEEE Trans. Microw. Theory Tech.54(2), 832–846 (2006). [CrossRef]
  5. J. P. Yao, “A tutorial on microwave photonics,” IEEE Photon. Soc. Newsletter26(2), 4–12 (2012).
  6. X. Xue, X. Zheng, H. Zhang, and B. Zhou, “Widely tunable single-bandpass microwave photonic filter employing a non-sliced broadband optical source,” Opt. Express19(19), 18423–18429 (2011). [CrossRef] [PubMed]
  7. A. Loayssa, J. Capmany, M. Sagues, and J. Mora, “Demonstration of Incoherent Microwave photonic filters with all-optical complex coefficients,” IEEE Photon. Technol. Lett.18(16), 1744–1746 (2006). [CrossRef]
  8. Y. Yan and J. P. Yao, “A tunable photonic microwave filter with a complex coefficient using an optical RF phase shifter,” IEEE Photon. Technol. Lett.19(19), 1472–1474 (2007). [CrossRef]
  9. W. Xue, S. Sales, J. Mork, and J. Capmany, “Widely tunable microwave photonic notch filter based on slow and fast light effects,” IEEE Photon. Technol. Lett.21(3), 167–169 (2009). [CrossRef]
  10. J. Lloret, G. Morthier, F. Ramos, S. Sales, D. Van Thourhout, T. Spuesens, N. Olivier, J. M. Fédéli, and J. Capmany, “Broadband microwave photonic fully tunable filter using a single heterogeneously integrated III-V/SOI-microdisk-based phase shifter,” Opt. Express20(10), 10796–10806 (2012). [CrossRef] [PubMed]
  11. X. Yi, T. X. H. Huang, and R. A. Minasian, “Tunable and reconfigurable photonic signal processor with programmable all-optical complex-coefficients,” IEEE Trans. Microw. Theory Tech.58(11), 3088–3093 (2010). [CrossRef]
  12. M. Song, C. M. Long, R. Wu, D. Seo, D. Leaird, and A. M. Weiner, “Reconfigurable and tunable flat-top microwave photonics filters utilizing optical frequency combs,” IEEE Photon. Technol. Lett.23(21), 1618–1620 (2011). [CrossRef]
  13. J. Lloret, J. Sancho, M. Pu, I. Gasulla, K. Yvind, S. Sales, and J. Capmany, “Tunable complex-valued multi-tap microwave photonic filter based on single silicon-on-insulator microring resonator,” Opt. Express19(13), 12402–12407 (2011). [CrossRef] [PubMed]
  14. K. S. Lee and T. Erdogan, “Fiber mode coupling in transmissive and reflective tilted fiber gratings,” Appl. Opt.39(9), 1394–1404 (2000). [CrossRef] [PubMed]
  15. H. Shahoei and J. P. Yao, “Tunable microwave photonic phase shifter based on slow and fast light effects in a tilted fiber Bragg grating,” Opt. Express20(13), 14009–14014 (2012). [CrossRef] [PubMed]
  16. M. K. Davis, M. J. Digonnet, and R. Pantell, “Thermal effects in doped fibers,” J. Lightwave Technol.16(6), 1013–1023 (1998). [CrossRef]
  17. H. Shahoei, M. Li, and J. P. Yao, “Continuously tunable time delay using an optically pumped linearly chirped fiber Bragg grating,” J. Lightwave Technol.29(10), 1465–1472 (2011). [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.


Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited