Abstract
A novel design of photonic crystal fiber (PCF) for broadband dispersion compensation is proposed. By changing the radius of the air holes placed in close proximity of the guiding core, the PCF fiber can realize effective broadband dispersion compensation. Through the proper design, the PCF fiber is shown to provide large normal dispersion up to several hundred ps/nm/km. Two examples of the PCF fibers for dispersion compensation of the standard single mode fiber and True wave-RS fiber are given. For example, by decreasing the diameter of second ring of air holes, the proposed PCF fiber is shown to provide large normal dispersion (up to -811 ps/nm/km), nearly ten times of conventional dispersion compensating fibers, and compensate conventional single-mode fibers within ±0.05 ps/nm/km over a wavelength range of the conventional C-band.
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