Abstract

A refractive index profile design, which can enable us to obtain a flat-top fundamental mode field around the center, is presented. The theoretical method to analyze the four-layer large flattened mode (LFM) fibers is given. The properties of the fiber, including the fundamental and higher order modal fields, effective area, and bending loss, are discussed. The reasons forming the different modal fields are explained. By discussion, the larger effective area of the LFM fiber compared with conventional step-index fiber is proven and the feasibility to suppress the higher order modes via bending is given.

© 2007 Chinese Optics Letters

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References

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2005 (1)

A. Tunnermann, T Schreiber, F. Roser, A. Liem, S. Hofer, H. Zellmer, S. Nolte, and J. Limpert, J. Phys. B 38, S681 (2005).

2004 (1)

J. W. Dawson, R. Beach, I. Jovanovic, B. Wattellier, Z. Liao, S. A. Payne, and C. P. J. Barty, Proc. SPIE 5335, 132 (2004).

2003 (1)

R. K. Varshney, A. K. Ghatak, and I. C. Goyal, Opt. Fiber Technol. 9, 189 (2003).

2002 (1)

2000 (1)

1999 (3)

1998 (3)

1993 (1)

S. F. Mahmoud and A. M. Kharbat, J. Lightwave Technol. 11, 1717 (1993).

1983 (1)

K. Petermann, Electron. Lett. 19, 712 (1983).

Appl. Opt. (1)

Electron. Lett. (1)

K. Petermann, Electron. Lett. 19, 712 (1983).

J. Lightwave Technol. (1)

S. F. Mahmoud and A. M. Kharbat, J. Lightwave Technol. 11, 1717 (1993).

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

J. Phys. B (1)

A. Tunnermann, T Schreiber, F. Roser, A. Liem, S. Hofer, H. Zellmer, S. Nolte, and J. Limpert, J. Phys. B 38, S681 (2005).

Opt. Fiber Technol. (1)

R. K. Varshney, A. K. Ghatak, and I. C. Goyal, Opt. Fiber Technol. 9, 189 (2003).

Opt. Lett. (5)

Proc. SPIE (2)

A. K. Ghatak, I. C. Goyal, and R. Jindal, Proc. SPIE 3666, 40 (1999).

J. W. Dawson, R. Beach, I. Jovanovic, B. Wattellier, Z. Liao, S. A. Payne, and C. P. J. Barty, Proc. SPIE 5335, 132 (2004).

Other (3)

G. P. Agrawal, Nonlinear Fiber Optics (Academic, Boston, 1989).

J. A. Alvarez-Chavez, A. B. Grudinin, J. Nilsson, P. W. Turner, and W. A. Clarkson, in Proceeding of CLEO 1999 247 (1999).

A. W. Snyder and J. D. Love, Optical Waveguide Theory (Chapman and Hall, London, 1983).

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