15 October 2012 Hollow core photonic bandgap fiber with microfluid-infiltrated air holes for slow-light propagation
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Abstract
Slow light plays an important role in the fields of all-optical signal processing and integration photonics. It has shown many potential applications, such as realizing optical delay lines or buffers, enhancing linear and nonlinear light-matter interactions, as well as increasing the sensitivity of the interferometers and transducers. In this paper, hollow-core photonic bandgap fibers made from high index glasses are designed by infiltrating microfluid into the air-holes to tailor the fiber dispersion for slow-light propagation under low pulse distortion. In such a fiber made from Si material, group index ng~8 is obtained with a bandwidth up to 30 nm, where the group index fluctuation is restricted in ±10 % of the ng, while ng~6 is obtained with a bandwidth over 100 nm when the chalcogenide material is selected instead. Such a ±10 % criterion determines a regarded flatland region accordingly, and in this region the group velocity dispersion can be negligible. It is found that for the same fiber length the slow-light time delay in the photonic bandgap fiber is much larger as compared with that in the single mode fiber. This kind of photonic bandgap fiber may have many potential applications in short-distance fiber communications and delay lines.
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Liyong Ren, Jian Liang, Maojin Yun, "Hollow core photonic bandgap fiber with microfluid-infiltrated air holes for slow-light propagation", Proc. SPIE 8497, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications VI, 849710 (15 October 2012); doi: 10.1117/12.929124; https://doi.org/10.1117/12.929124
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KEYWORDS
Dispersion

Slow light

Cladding

Silicon

Chalcogenides

Light-matter interactions

Photonic crystal fibers

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