Abstract: A wide-band and finely gain-flattened hybrid fiber amplifier is realized. The seamless 3.0-, 1.3-, and 1.0-dB bandwidths of 80, 76, and 69 nm with relative gain-flatness of 11.3%, 4.7%, and ...

To analyze light distribution without a dodecahedron cavity, a cubic cosine relationship between deflection angle and test flat plane is proposed, and results show that nonuniformity reaches 5%. By ...

Deformational, or positional, plagiocephaly is when a baby develops a flat spot on one side of the head or the whole back of the head. It happens when a baby sleeps in the same position most of the ...