| 摘要 |
The optical couplings for an array-type input/output optical waveguide and a fiber array must be aligned simultaneously for input side and output side fiber arrays, and an optical matrix switch requires a control algorithm having high stability and reliability. The present invention is a 2n×2n matrix switch (where n≥1 an n is an integer) formed using 2n×2n 2×2 optical switches having two waveguides on both the input side and the output side, wherein 2n of the waveguides on the input and output sides are connected to optical fibers for transmitting signal light, and photodiodes (PD) having a detectable optical intensity are monolithically integrated with the remaining 2n waveguides, with these photodiodes being used as monitor photodiodes when the fiber array is aligned and when the optical matrix switch is controlled, thereby providing feedback control for the fibers and control circuits. |
