| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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A Novel Photonic Quasicrystal Fiber with Broadband Large Negative Dispersion |
| LI Yu-He, FAN Wan-De**, SHENG Qiu-Qin
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School of Physics, Nankai University, Tianjin 300071
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| Cite this article: |
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LI Yu-He, FAN Wan-De, SHENG Qiu-Qin 2010 Chin. Phys. Lett. 27 114211 |
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Abstract A broadband highly dispersive fiber based on a dual-concentric-core photonic quasicrystal fiber (PQF) is designed for chromatic dispersion compensation. The fiber is composed of pure silica background and air-holes without doping. The fundamental supermode has a large negative dispersion value of about −9600 ps⋅nm−1⋅km−1 over an optical communication band around 1550 nm and a full width at half maximum (FWHM) of 40 nm. By adjusting the structural parameters, a dispersion of −2250 ps⋅nm−1⋅km−1 around 1550 nm with the FWHM exceeding 280 nm is obtained and the dispersion-bandwidth product can reach 630 GHz−1⋅km−1, which is the highest value of dispersion-bandwidth product from pure silica fibers reported so far.
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| Keywords:
42.81.-i
42.81.Qb
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Received: 26 April 2010
Published: 22 October 2010
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