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Widely tunable wavelength conversion with extinction ratio enhancement using PCF-based NOLM

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6 Author(s)
Kwok, C.H. ; Dept. of Electron. Eng., Chinese Univ. of Hong Kong, China ; Lee, S.H. ; Chow, K.K. ; Shu, C.
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A widely tunable wavelength conversion scheme has been demonstrated using a 64-m-long dispersion-flattened high-nonlinearity photonic crystal fiber in a nonlinear optical loop mirror. Wavelength conversion range of over 60 nm with a 10-Gb/s return-to-zero signal was obtained with the output extinction ratio (ER) maintained above 13 dB. The proposed scheme can also improve the output ER and remove the bit-error-rate floor if a degraded signal is used.

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Photonics Technology Letters, IEEE  (Volume:17 ,  Issue: 12 )