| 摘要 |
PURPOSE: A bidirectional dispersion compensator is provided to compensate dispersion of bidirectional optical signals by using the one dispersion compensator, thereby minimizing the number of optical components and reducing size of an entire system. CONSTITUTION: An optical input/output unit(200) inputs and outputs many multiplexed wavelengths. Two ports of the first optical coupler/distributor(210) are connected to the optical input/output unit(200), and the first optical coupler/distributor(210) couples light incident from the two ports, and distributes the coupled light into two lights having the same power, then outputs the lights to other two ports as performing a reverse operation. One port of a phase controller(220) is connected to one of the other ports of the coupler/distributor(210), and the phase controller(220) controls a phase of light incident from the connected port, and performs a reverse operation. One of three ports of the second optical coupler/distributor(230) is connected to the other port of the phase controller(220). The other port of the second optical coupler/distributor(230) is connected to the rest ports of the two ports of the first optical coupler/distributor(210). The second optical coupler/distributor(230) couples light incident from each port, outputs the coupled lights to the rest one port, and performs a reverse operation. A dispersion compensator(240) compensates dispersion of the light incident from the second optical coupler/distributor(230), reflects the compensated light, and outputs the light to the second optical coupler/distributor(230). |
