Large delay-bandwidth product and tuning of slow light pulse in photonic crystal coupled waveguide
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概要
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This paper reports two advances in a slow light device consisting of chirped photonic crystal slab coupled waveguide on SOI substrate. One is concerning the delay-bandwidth product, indicating the buffering capacity of the device. We experimentally evaluated a record high value of 57 (a 40ps delay and a 1.4THz bandwidth). We also observed ~1ps wide optical pulse transmission in the cross-correlation measurement. Regarding the pulse as a signal and considering the broadening of the pulse width due to the imperfect dispersion compensation in the device, storage of more than 12 signal bits was confirmed. The other is a wide-range tuning of the pulse delay. We propose a technique for externally controlling the chirping to permit variable delay. We demonstrate tuning of the pulse delay up to 23ps, corresponding to a ~7mm extension of the free space length.
- Optical Society of Americaの論文
- 2008-06-09
Optical Society of America | 論文
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