Abstract

Quasi error-free 10Gbit/s data transmission is demonstrated over a novel type of 50µm core diameter photonic crystal fiber with as much as 100m length. Combined with 850 nm VCSEL sources, this fiber is an attractive alternative to graded-index multi-mode fibers for datacom applications. A comparison to numerical simulations suggests that the high bit-rate may be partly explained by inter-modal diffusion.

© 2003 Optical Society of America

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References

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  1. R. Michalzik, K. J. Ebeling, M. Kicherer, F. Mederer, R. King, H. Unold, and R. Jager, �??High-performance VCSELs for optical data links,�?? IEICE T. Electron. E84C, 629 (2001).
  2. P. Russell, �??Review: Photonic Crystal Fibers,�?? Science 299, 358 (2003).
    [CrossRef] [PubMed]
  3. G. P. Agrawal, Fiber-Optic Communication Systems (Wiley & Sons, New York, 1997).
  4. R. Michalzik, F. Mederer, H. Roscher, M. Stach, H. Unold, D.Wiedenmann, R. King, M. Grabherr, and E. Kube, �??Design and communication applications of short-wavelength VCSELs,�?? Proc. SPIE 4905, 310 (2002).
    [CrossRef]
  5. S. G. Johnson and J. D. Joannopoulos, �??Block-iterative frequency-domain methods for Maxwell�??s equations in a planewave basis,�?? Opt. Express 8, 173 (2001), <a href="http://www.opticsexpress.org/abstract.cfm?URI=OPEX-8-3-173">http://www.opticsexpress.org/abstract.cfm?URI=OPEX-8-3-173</a>
    [CrossRef] [PubMed]
  6. J. Lægsgaard, A. Bjarklev, and S. E. B. Libori, �??Chromatic dispersion in photonic crystal fibers: fast and accurate scheme for calculation,�?? J. Opt. Soc. Am. B 20, 443 (2003).
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  7. A. K. Ghatak and K. Thyagarajan, Introduction to Fiber Optics (Cambridge University Press, Cambridge, 1998).

J. Opt. Soc. Am. B (1)

Opt. Express (1)

Proc. SPIE (1)

R. Michalzik, F. Mederer, H. Roscher, M. Stach, H. Unold, D.Wiedenmann, R. King, M. Grabherr, and E. Kube, �??Design and communication applications of short-wavelength VCSELs,�?? Proc. SPIE 4905, 310 (2002).
[CrossRef]

Other (4)

A. K. Ghatak and K. Thyagarajan, Introduction to Fiber Optics (Cambridge University Press, Cambridge, 1998).

R. Michalzik, K. J. Ebeling, M. Kicherer, F. Mederer, R. King, H. Unold, and R. Jager, �??High-performance VCSELs for optical data links,�?? IEICE T. Electron. E84C, 629 (2001).

P. Russell, �??Review: Photonic Crystal Fibers,�?? Science 299, 358 (2003).
[CrossRef] [PubMed]

G. P. Agrawal, Fiber-Optic Communication Systems (Wiley & Sons, New York, 1997).

Supplementary Material (1)

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Figures (7)

Fig. 1.
Fig. 1.

Simulated NA for the 33µm core PCF (upper left inset) with bridges of width b≃4.8µm and the 50µm core PCF (lower right inset) with bridges of width b≃7.0µm. Note the different scale for the two insets.

Fig. 2.
Fig. 2.

Panel (A) shows small-signal frequency responses at 850nm for a length L=100m for the two PCFs illustrated in Fig. 1. Panel (B) shows normalized DMD plots for both fibers at offset positions of -12, 0, and 12µm.

Fig. 3.
Fig. 3.

Normalized DMD plots at variable offset positions. Panels (A) and (B) show results for the 33µm and the 50µm PCFs, respectively.

Fig. 4.
Fig. 4.

BER characteristics for both 100 m-long PCFs at data rates of 5, 7.5, and 10Gbit/s.

Fig. 5.
Fig. 5.

Panel (A) shows the effective indices of the M=36 guided eigenmodes at λ=850nm in the 33µm core PCF (see upper left inset of Fig. 1). The horizontal dashed line indicates the cladding index n cl corresponding to the experimentally measured NA. The filled curve shows the distribution P(nm ) (the projection of the data onto the y-axis). Panel (B) shows the corresponding time-delays τ m and the distribution P(τm ).

Fig. 6.
Fig. 6.

Intensity distributions at λ=850nm in the 33µm PCF (see upper left inset in Fig. 1). Panel (A) shows the first (m=1) eigenmode (click panel to view the other M=36 guided eigenmodes, 700 Kbyte). Panel (B) shows the average eigenfield intensity which agrees well with the experimentally observed near-field intensity shown in Panel (C). In Panels (A) and (B) the contour lines indicate the air-silica interfaces.

Fig. 7.
Fig. 7.

Time-delays of the M=20 guided eigenmodes in the 50µm PCF (see lower right inset in Fig. 1). The filled curve shows the distribution P m ) and the inset shows the simulated average eigenfield intensity with contour lines indicating the air-silica interfaces.

Equations (1)

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B T × L L Δ T , Δ T 2 { δ 2 τ m } , δ τ m = τ m { τ m } ,

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