OPTICAL HYBRID, UNIT FOR OPTICAL HYBRID, MANUFACTURING METHOD OF THE SAME, AND OPTICAL RECEPTION MODULE

摘要

PROBLEM TO BE SOLVED: To achieve miniaturization, cost reduction or the like regarding an optical hybrid.SOLUTION: A first reflection mirror surface part 32 reflects first input light 101 to a non-polarized half mirror surface part 42. The non-polarized half mirror surface part 42 synthesizes the first input light 101 and second input light 102 and emits first synthetic light 111 and second synthetic light 112. A polarization beam splitter surface part 52 is arranged so that the first synthetic light 111 reflected at the first reflection mirror surface part 32 and the second synthetic light 112 arriving from the non-polarized half mirror surface part 42 are made incident. A second reflection mirror surface part 62 is arranged so that the first synthetic light 111 and the second synthetic light 112 transmitted through the polarization beam splitter surface part 52 are made incident. The first reflection mirror surface part 32, the non-polarized half mirror surface part 42, the polarization beam splitter surface part 52 and the second reflection mirror surface part 62 are arranged in parallel to each other.