惠普没有用光缆，而是应用了光波导——数条塑料细丝包以高反光的金属薄膜。
Instead of optical fibre, HP is using waveguides-small strips of plastic with grooves on their highly reflective metallic walls.
其折射率比传统用作光纤的石英的折射率高，对光有较好的约束性能，因此在光波导方面可能会有更好的应用前景。
Its refractive index is higher than that of the traditional optical fiber material, silica, so silicon nitride has good optics confinement property.
不连续性问题是在光波导的实际应用中经常遇到的问题。
Discontinuity problems are frequently encountered in practical applications of optical waveguides.
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