Abstract

We have developed a new single-mode optical fiber (SMF) which exhibits ultra low bend sensitivity over a wide communication band. The measured mean bending loss at 1550 nm was about 0.0095 dB for a loop of 10 mm diameter.

© 2009 OSA

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References

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  1. Corning (2009), SMF-28 at http://www.corning.com/WorkArea/showcontent.aspx?id=14357
  2. ITU-T recommendations: G.652, G657
  3. Draka (2009), BendBrightXS at http://www.drakafibre.com
  4. M.-J. Li, P. Tandon, D. C. Bookbinder, S. R. Bickham, M. A. McDermott, R. B. Desorcie, D. A. Nolan, J. J. Johnson, K. A. Lewis, and J. J. Englebert, “Ultra-low bending loss single-mode fiber for FTTH,” Proceedings of OFC/NFOEC-2008, San Diego, USA, Feb. 24–28, 2008, PDP10 (2008).
  5. Stokeryale bend-insensitive fiber (2009), http://www.stockeryale.com/o/fiber/products/bif-1550-l2.htm
  6. I. Sakabe, H. Ishikawa, H. Tanji, Y. Terasawa, M. Ito, and T. Ueda, “Enhanced bending loss insensitive fiber and new cables for CWDM access networks,” Proceeding of 53rd International Wire and Cable Symposium, Philadelphia, USA, November 14–17, 2004, 112–118, (2004).
  7. K. Himeno, S. Matsuo, N. Guan, and A. Wada, “Low bending loss single mode fibers for Fiber-to-the-Home,” J. Lightwave Technol. 23(11), 3494–3499 (2005).
    [CrossRef]
  8. P. R. Watekar, S. Ju, and W.-T. Han, “Single-mode optical fiber design with wide-band ultra low bending-loss for FTTH application,” Opt. Express 16(2), 1180–1185 (2008).
    [CrossRef] [PubMed]
  9. P. R. Watekar, S. Ju, Y. S. Yoon, Y. S. Lee, and W.-T. Han, “Design of a trenched bend insensitive single mode optical fiber using spot size definitions,” Opt. Express 16(18), 13545–13551 (2008).
    [CrossRef] [PubMed]
  10. P. R. Watekar, S. Ju, and W.-T. Han, “Design and development of a trenched optical fiber with ultra-low bending loss,” Opt. Express 17(12), 10350–10363 (2009).
    [CrossRef] [PubMed]
  11. FiberCAD, Optiwave Corporation, Canada (2000).
  12. A. W. Snyder, and J. D. Love, in: Optical waveguide theory, Chapman and Hall (1983).
  13. D. Marcuse, “Curvature loss formula for optical fibers,” J. Opt. Soc. Am. 66(3), 216–220 (1976).
    [CrossRef]
  14. Samsung (2009), http://www.samsungfiberoptics.com/products/OF/OF_SF_SMF.asp

2009 (1)

2008 (2)

2005 (1)

1976 (1)

Guan, N.

Han, W.-T.

Himeno, K.

Ju, S.

Lee, Y. S.

Marcuse, D.

Matsuo, S.

Wada, A.

Watekar, P. R.

Yoon, Y. S.

J. Lightwave Technol. (1)

J. Opt. Soc. Am. (1)

Opt. Express (3)

Other (9)

Corning (2009), SMF-28 at http://www.corning.com/WorkArea/showcontent.aspx?id=14357

ITU-T recommendations: G.652, G657

Draka (2009), BendBrightXS at http://www.drakafibre.com

M.-J. Li, P. Tandon, D. C. Bookbinder, S. R. Bickham, M. A. McDermott, R. B. Desorcie, D. A. Nolan, J. J. Johnson, K. A. Lewis, and J. J. Englebert, “Ultra-low bending loss single-mode fiber for FTTH,” Proceedings of OFC/NFOEC-2008, San Diego, USA, Feb. 24–28, 2008, PDP10 (2008).

Stokeryale bend-insensitive fiber (2009), http://www.stockeryale.com/o/fiber/products/bif-1550-l2.htm

I. Sakabe, H. Ishikawa, H. Tanji, Y. Terasawa, M. Ito, and T. Ueda, “Enhanced bending loss insensitive fiber and new cables for CWDM access networks,” Proceeding of 53rd International Wire and Cable Symposium, Philadelphia, USA, November 14–17, 2004, 112–118, (2004).

FiberCAD, Optiwave Corporation, Canada (2000).

A. W. Snyder, and J. D. Love, in: Optical waveguide theory, Chapman and Hall (1983).

Samsung (2009), http://www.samsungfiberoptics.com/products/OF/OF_SF_SMF.asp

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Figures (15)

Fig. 1
Fig. 1

(Top) Effect of trench width on the bending loss of optical fiber, (Bottom) Spectral variations of bending losses at different trench widths. The trench refractive index was 1.44 at 1550 nm.

Fig. 2
Fig. 2

Theretical bending loss in the single trench and the double trench optical fiber. Single trench was 10 µm wide while in the double trenched fiber, each trench was 5 µm wide with 5 µm separation. Their bending loss performance can be seen to be similar.

Fig. 3
Fig. 3

Effect of trench width on the bending loss of double-trenched optical fiber. When one trench width was varied, other trench width was held constant at 3.55 μm.

Fig. 4
Fig. 4

Effect of the width separating two trenched on the bending loss of double-trenched optical fiber.

Fig. 5
Fig. 5

Refractive index profile of the double-trench optical fiber fabricated using the MCVD process.

Fig. 6
Fig. 6

Determination of cutoff wavelength of the double-trenched optical fiber.

Fig. 7
Fig. 7

Transmission spectra and spectral variations of the bending loss of double-trenched optical fiber at 4.5 mm and 10 mm of bending diameters.

Fig. 8
Fig. 8

Measured bending loss of the double-trenched optical fiber at 1550 nm for different number of loops with 10 mm of bending diameter. Dashed lines are guide to the eye.

Fig. 9
Fig. 9

Measured bending loss of the double-trenched optical fiber at 1550 nm for different number of loops with 4.5 mm of bending diameter. Dashed lines are guide to the eye.

Fig. 10
Fig. 10

Photographs showing the bending loss in the commercial jacketed single mode optical fiber at 1550 nm upon 10 mm of bending diameter: (a) when the fiber was straight, and (b) when it was bended. The bending loss was 6.01 dB/loop as shown by the power meter.

Fig. 11
Fig. 11

Photographs showing the bending loss in the double trenched BIF at 1550 nm upon 10 mm of bending diameter: (c) when the fiber was straight, and (d) when it was bended. The bending loss was negligible.

Fig. 12
Fig. 12

A measurement showing the fusion splice between the single mode optical fiber (left) and the BIF (right).

Fig. 13
Fig. 13

The transverse offset loss between the single mode fiber and the bend insensitive fiber at 1550 nm. Two fibers were held apart by a distance of 5 μm.

Fig. 14
Fig. 14

The longitudinal offset loss between the single mode fiber and the bend insensitive fiber at 1550 nm. The loss was calculated relative to the loss at 5 μm of separation.

Fig. 15
Fig. 15

Spectral variations of the dispersion and the MFD of the double-trenched BIF.

Tables (3)

Tables Icon

Table 1 Comparison of bending loss performance of various optical fibers at 1550 nm.

Tables Icon

Table 2 Optical parameters of the double-trenched single mode optical fiber fabricated using the MCVD technique.

Tables Icon

Table 3 Optical parameters of the double-trenched single mode optical fiber at 1550 nm.

Equations (3)

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αmacro=10loge10(πV816aRbW3)1/2exp(4RbΔW33aV2)[0(1g)F0rdr]20F02r2rdr
g=n(r)2nmin2nmax2nmin2;V=k0anmax2nmin2;W=aβ2(k0nmin)2;Δ=nmax2nmin22nmax2
αmacro(dB/loop)=0.00628×[αmacro(dB/km)]×Rb

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