Patent ID: 9618695
Date: 2017-04-11
CPC Classifications: G02B,H04B,H04J

Claim:
1. An optical signal processing apparatus, comprising: a planar lightwave circuit (PLC) board including a waveguide-array structure; a cylinder lens configured to collimate optical signals emitted and output from the PLC board into parallel beams defining a plurality of channels; a condenser lens configured to condense, for each channel, optical signals passing through the cylinder lens; a light receiving element configured to receive optical signals condensed on at least one channel from the condenser lens and convert the optical signals into electrical signals; and a motor configured to move one of the PLC board or the light receiving element relative to the other of the PLC board or the light receiving element, wherein the PLC board divides an optical signal input thereto into a plurality of different optical signals and outputs the optical signals at different propagation angles, and wherein the condenser lens is configured to output the plurality of channels having optical axes spaced apart from each other, such that moving, by the motor, the PLC board or the light receiving element to a first position of the PLC board relative to the light receiving element directs one channel among the plurality of channels toward the light receiving element to be detected by the light receiving element, and moving, by the motor, the PLC board or the light receiving element to another position of the PLC board relative to the light receiving element directs another channel among the plurality of channels toward the light receiving element.