| 摘要 |
PURPOSE:To attain reception of a stable coherent light by combining advantages of the polarized wave diversity reception system and the double balanced mixing system with respect to the double balanced polarized wave diversity receiver in the coherent light communication. CONSTITUTION:The receiver is provided with a polarized light separate means 3 separating a reception light 1 and a local oscillation light 2 into polarized components orthogonal to each other, photocouplers 5, 6 receiving the same polarized component in the optical signals separated respectively by the polarized light separate means 3, a light receiving means 4 converting the output optical signal mixed by the photocouplers 5, 6 into an electric signal, and a synthesis means 7 synthesizing the electric signal by the light receiving means 4 with phase adjustment or the like. |
