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Holographic Bragg grating input-output couplers for polymer waveguides at an 850-nm wavelength

机译:适用于波长为850 nm的聚合物波导的全息布拉格光栅输入输出耦合器

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摘要

Bragg gratings used as input-output couplers in polymeric waveguides have been demonstrated at infrared wavelengths. These Bragg grating couplers were holographically formed volume phase gratings with a near-45° fringe slant angle embedded directly into a waveguide layer. A photopolymer was used for both producing a planar waveguide and constructing the embedded Bragg grating coupler. A coupling efficiency of 23% for input and 5% for output has been achieved at 850 nm.The output-coupling beam profiles are also discussed. ,#1997 Optical Society of America
机译:已经在红外波长下证明了在聚合物波导中用作输入-输出耦合器的布拉格光栅。这些布拉格光栅耦合器是全息形成的体相位光栅,其近45°的条纹倾斜角直接嵌入波导层中。光敏聚合物既用于生产平面波导,又用于构建嵌入式布拉格光栅耦合器。在850 nm处实现了23%的输入耦合效率和5%的输出耦合效率。还讨论了输出耦合光束分布。 ,#1997美国光学学会

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