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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 13 — Jul. 1, 2013
  • pp: 15268–15279

A SNAP coupled microresonator delay line

M. Sumetsky  »View Author Affiliations

Optics Express, Vol. 21, Issue 13, pp. 15268-15279 (2013)

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A delay line fabricated of a chain of SNAP (Surface Nanoscale Axial Photonics) coupled microresonators is demonstrated. In contrast to resonant delay lines demonstrated to date, the slow light in this structure is enhanced by the 2R (Rotation + Reflection) effect realized due to the 3D propagation of light along the surface of a SNAP fiber. Here, the delay line coupled to a single input/output waveguide (i.e., operating in the reflection mode) is considered. Depending on the coupling parameters and loss, the delay time in this device is either proportional to the density of resonances averaged over the pulse spectrum or tends to zero. The delay line is fabricated of 20 coupled microresonators with the total length of 1.2 mm and footprint area of 0.05 mm2. It exhibits the record low insertion loss (< 3 dB), small speed of light (<c/250), and large (>1 ns) delay time along the 0.1 nm bandwidth achieved for the miniature microresonator delay lines. The feasibility of significant improvement of the SNAP delay line characteristics (larger delay time and bandwidth, smaller losses and dimensions, and anti-reflecting apodization) is discussed.

© 2013 OSA

OCIS Codes
(060.2340) Fiber optics and optical communications : Fiber optics components
(230.3990) Optical devices : Micro-optical devices
(140.3945) Lasers and laser optics : Microcavities

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: March 4, 2013
Revised Manuscript: May 29, 2013
Manuscript Accepted: June 5, 2013
Published: June 19, 2013

M. Sumetsky, "A SNAP coupled microresonator delay line," Opt. Express 21, 15268-15279 (2013)

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  1. J. B. Khurgin, “Slow light in various media: a tutorial,” Adv. Opt. Photon.2(3), 287–318 (2010). [CrossRef]
  2. F. Morichetti, C. Ferrari, A. Canciamilla, and A. Melloni, “The first decade of coupled resonator optical waveguides: bringing slow light to applications,” Laser Photonics Rev.6(1), 74–96 (2012). [CrossRef]
  3. M. Notomi, “Strong light confinement with periodicity,” Proc. IEEE99(10), 1768–1779 (2011). [CrossRef]
  4. G. Lenz, B. J. Eggleton, C. K. Madsen, and R. E. Slusher, “Optical delay lines based on optical filters,” IEEE J. Quantum Electron.37(4), 525–532 (2001). [CrossRef]
  5. M. Notomi, E. Kuramochi, and T. Tanabe, “Large-scale arrays of ultrahigh-Q coupled nanocavities,” Nat. Photonics2(12), 741–747 (2008). [CrossRef]
  6. F. N. Xia, L. Sekaric, and Y. Vlasov, “Ultracompact optical buffers on a silicon chip,” Nat. Photonics1(1), 65–71 (2007). [CrossRef]
  7. M. L. Cooper, G. Gupta, M. A. Schneider, W. M. J. Green, S. Assefa, F. Xia, Y. A. Vlasov, and S. Mookherjea, “Statistics of light transport in 235-ring silicon coupled-resonator optical waveguides,” Opt. Express18(25), 26505–26516 (2010). [CrossRef]
  8. M. Sumetsky, “Localization of light in an optical fiber with nanoscale radius variation,” in CLEO/Europe and EQEC 2011 Conference Digest, postdeadline paper PDA_8.
  9. M. Sumetsky and J. M. Fini, “Surface nanoscale axial photonics,” Opt. Express19(27), 26470–26485 (2011). [CrossRef]
  10. M. Sumetsky, D. J. DiGiovanni, Y. Dulashko, J. M. Fini, X. Liu, E. M. Monberg, and T. F. Taunay, “Surface nanoscale axial photonics: robust fabrication of high-quality-factor microresonators,” Opt. Lett.36(24), 4824–4826 (2011). [CrossRef]
  11. M. Sumetsky, K. Abedin, D. J. DiGiovanni, Y. Dulashko, J. M. Fini, X. Liu, and E. M. Monberg, “Coupled high Q-factor surface nanoscale axial photonics (SNAP) microresonators,” Opt. Lett.37(6), 990–992 (2012). [CrossRef]
  12. M. Sumetsky, D. J. DiGiovanni, Y. Dulashko, X. Liu, E. M. Monberg, and T. F. Taunay, “Photo-induced SNAP: fabrication, trimming, and tuning of microresonator chains,” Opt. Express20(10), 10684–10691 (2012), http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-10-10684 . [CrossRef]
  13. M. Sumetsky, “Theory of SNAP devices: basic equations and comparison with the experiment,” Opt. Express20(20), 22537–22554 (2012), http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-20-20-22537 . [CrossRef]
  14. M. Sumetsky and Y. Dulashko, “SNAP: Fabrication of long coupled microresonator chains with sub-angstrom precision,” Opt. Express20(25), 27896–27901 (2012). [CrossRef]
  15. A. B. Matsko, A. A. Savchenkov, and L. Maleki, “Vertically coupled whispering-gallery-mode resonator waveguide,” Opt. Lett.30(22), 3066–3068 (2005). [CrossRef]
  16. M. Sumetsky, “Vertically-stacked multi-ring resonator,” Opt. Express13(17), 6354–6375 (2005). [CrossRef]
  17. J. E. Heebner, R. W. Boyd, and Q.-H. Park, “SCISSOR solitons and other novel propagation effects in microresonator-modified waveguides,” J. Opt. Soc. Am. B19(4), 722–731 (2002). [CrossRef]
  18. A. Yariv, Y. Xu, R. K. Lee, and A. Scherer, “Coupled-resonator optical waveguide: a proposal and analysis,” Opt. Lett.24(11), 711–713 (1999).
  19. V. S. Ilchenko and A. B. Matsko, “Optical resonators with whispering-gallery modes - Part II: Applications,” IEEE J. Sel. Top. Quantum Electron.12(1), 15–32 (2006). [CrossRef]
  20. J. U. Nöckel, “2-d Microcavities: Theory and Experiments,” in Cavity-Enhanced Spectroscopies, R. D. van Zee and J. P. Looney, eds. (Academic Press, San Diego, 2002).
  21. M. Pöllinger, D. O’Shea, F. Warken, and A. Rauschenbeutel, “Ultrahigh-Q tunable whispering-gallery-mode microresonator,” Phys. Rev. Lett.103(5), 053901 (2009). [CrossRef]
  22. T. A. Birks, J. C. Knight, and T. E. Dimmick, “High-resolution measurement of the fiber diameter variations using whispering gallery modes and no optical alignment,” IEEE Photon. Technol. Lett.12(2), 182–183 (2000). [CrossRef]
  23. M. Sumetsky and Y. Dulashko, “Radius variation of optical fibers with angstrom accuracy,” Opt. Lett.35(23), 4006–4008 (2010). [CrossRef]
  24. M. Sumetsky and B. Eggleton, “Modeling and optimization of complex photonic resonant cavity circuits,” Opt. Express11(4), 381–391 (2003). [CrossRef]
  25. A. Melloni, F. Morichetti, C. Ferrari, and M. Martinelli, “Continuously tunable 1 byte delay in coupled-resonator optical waveguides,” Opt. Lett.33(20), 2389–2391 (2008). [CrossRef]
  26. A. Canciamilla, M. Torregiani, C. Ferrari, F. Morichetti, R. M. De La Rue, A. Samarelli, M. Sorel, and A. Melloni, “Silicon coupled-ring resonator structures for slow light applications: potential, impairments and ultimate limits,” J. Opt.12(10), 104008 (2010). [CrossRef]
  27. N. K. Fontaine, J. Yang, Z. Pan, S. Chu, W. Chen, B. E. Little, and S. J. B. Yoo, “Continuously Tunable Optical Buffering at 40 Gb/s for Optical Packet Switching Networks,” J. Lightwave Technol.26(23), 3776–3783 (2008). [CrossRef]
  28. M. Sumetsky, “Dispersionless impedance-matched low-loss optical bottle resonator slow light delay line,” arXiv:1305.6591, http://arxiv.org/abs/1305.6591 .

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