| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a quantum optical transmission apparatus capable of eliminating the trouble that manufacturing is largely restricted in correctly dividing a beam fifty-fifty, etc., and generating squeezed light by arbitrary wavelength band and pulse width through the use of a squeezed light generating method using the Kerr effect of an optical fiber as the comparatively easy method. <P>SOLUTION: A squeezed light generator includes the arbitrary optical fiber, a means for temporally separating two linear polarized light components, two Faraday rotators, and a high reflection mirror. Pulsed light is temporally separated into the two orthogonal polarized light components by a fifty-fifty strength ratio, and is propagated with reciprocatively in the optical fiber. Polarized wave is rotated by 90° in a homeward way. The two polarized light components passes a correctly equal optical path in reciprocation, so that interference is correctly performed fifty-fifty after the reciprocation in the fiber. The interference beam is separated by a polarized beam splitter with a high extinction ratio. When the polarized wave is coincident before an incident to the fiber and after the reciprocation, the polarized wave during the propagation in the fiber is not required to be established. Thus, the arbitrary fiber can be used. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
