| 摘要 |
PROBLEM TO BE SOLVED: To make an optical resonator small-sized.SOLUTION: An optical resonator 1 includes a first input/output port 2, a second input/output port 3 and a resonator wall 4. The resonator wall 4 is formed in such a manner that a direction vertical to a lamination direction becomes a normal direction, and includes a plurality of reflection parts 41 for fully reflecting light inputted from the first input/output port 2 multiple times and outputting the fully reflected light from the second input/output port 3. A first optical resonator is characterized in that there is a portion where tracks cross each other, on a track of light inputted from the first input/output port 2 until outputted from the second input/output port 3. In a second optical resonator, Q is an integer equal to or greater than 5, P is an integer greater than 1 and smaller than Q/2, Q and P are primary to each other and Q pieces of points circumferentially disposed at equal intervals in a core layer are defined as apexes. The second optical resonator is characterized in that a track of light inputted from the first input/output port 2 until outputted from the second input/output port 3 becomes a track connecting the apexes which are separated for the unit of P apexes. |
