C. M. Wang

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NIST has administered the first round robin of measurements for optical fiber Bragg gratings. We compared the measurement of center wavelength, bandwidth, isolation, minimum relative transmittance, and relative group delay among several grating types in two industry groups, telecommunications and sensors. We found that the state of fiber Bragg grating(More)
A potential low magnetic moment standard reference material (SRM) was studied in an interlaboratory comparison. The mean and the standard deviation of the saturation moment m s, the remanent moment m r, and the intrinsic coercivity H c of nine samples were extracted from hysteresis-loop measurements. Samples were measured by thirteen laboratories using(More)
In this paper, the influence of the haze ratio and antireflection properties of the thin film solar cell with a periodic texture is theoretical investigated. Two different cases, Case 1 and Case 2, are compared. Case 1 shows an extremely high haze ratio of 97.4% while Case 2 shows a low reflectance of 0.3%. For the thickness of the a-Si:H layer is(More)
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