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Cutoff wavelength measurement in a fiber with improved bending loss

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6 Author(s)
Nakajima, K. ; NTT Access Network Service Syst. Labs., NTT Corp., Ibaraki, Japan ; Zhou, J. ; Tajima, K. ; Fukai, C.
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In this letter, we describe a novel method for evaluating the cutoff wavelength in a single-mode fiber based on far-field pattern (FFP) measurement under different launch conditions. We show that the proposed method can be applied not only to conventional fiber but also to a special fiber with superior bending loss performance. We also discuss the relationship between the FFP measurement conditions and the measurement accuracy of the proposed method.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 8 )