| Autor: |
Cao, X. D., Barnett, B. C., Ahn, K. H., Liang, Y., Williams, G. R., Vaziri, M., Islam, M. N. |
| Zdroj: |
Optics Letters; August 1996, Vol. 21 Issue: 16 p1211-1213, 3p |
| Abstrakt: |
We experimentally demonstrate the operation of a low-birefringence (low-bi) nonlinear-optical loop mirror (NOLM) that has the advantages of low switching energy, tolerance to timing jitter, and cascadability. Because cascading two all-optical logic gates is an important step toward high-speed optical signal processing and header processing in time-division-multiplexed networks, we also demonstrate the cascaded operation of two low-bi NOLM’s. Using a passively mode-locked fiber laser that produces 450-fs pulses at a wavelength of 1.55 μm, we achieve a 10.7:1 switching contrast ratio and a 2.7-pulse-widths-wide timing window after the cascaded gates. The results agree well with theoretical predictions and confirm the advantages of the long interaction length associated with orthogonally polarized pulses in low-bi (Δn ~ 3.0 × 10^−6) polarization-maintaining fiber. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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