Variable Optical Fiber Attenuator Using Bending-Sensitive Fiber 


Vol. 29,  No. 5, pp. 566-573, May  2004


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  Abstract

A variable optical attenuator with a bending-sensitive fiber (BSF) that can be used in optical networks is developed. The proposed BSF consists of inner core, outer core, center dip and cladding. The proposed BSF is also very sensitive to mechanical perturbation, such as bending and pressure, making the light propagating in the BSF easily controlled and attenuated. The fabricated fiber-type variable optical attenuator using the proposed BSF (VOAFB) consisted of the BSF in a rectangular rubber ring with a fixed bend radius (BR) in a steady state. The variable optical attenuator using the proposed BSF (VOAFB) was able to attenuate the optical power by more than about -38dB with the gradient -88.4[dB . cm￣¹] at (1540-1560nm) based on adjusting the mechanical pressure applied to the upper surface of the rectangular rubber ring with the bent BSF. According to the experimental results when using the proposed VOAFB, the optical power was easily controlled by adjusting mechanical pressure and produced an insertion loss of 0.68 dB, polarization loss of O.5dB, and return loss of less than -60dB.

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  Cite this article

[IEEE Style]

D. Lee, K. Kwon, J. Song, J. park, "Variable Optical Fiber Attenuator Using Bending-Sensitive Fiber," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 5, pp. 566-573, 2004. DOI: .

[ACM Style]

Dong-ho Lee, Kwang-Hee Kwon, Jae-Won Song, and Jae-hee park. 2004. Variable Optical Fiber Attenuator Using Bending-Sensitive Fiber. The Journal of Korean Institute of Communications and Information Sciences, 29, 5, (2004), 566-573. DOI: .

[KICS Style]

Dong-ho Lee, Kwang-Hee Kwon, Jae-Won Song, Jae-hee park, "Variable Optical Fiber Attenuator Using Bending-Sensitive Fiber," The Journal of Korean Institute of Communications and Information Sciences, vol. 29, no. 5, pp. 566-573, 5. 2004.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880