40-channel optical power level monitor with micro pyramid mirrors formed in planar lightwave circuit

Summary from only given. We have developed a compact and mass-production 40-channel power level monitor based on a planer lightwave circuit (PLC). We believe our method has the following advantages. The combination of directional coupler and gold micro pyramid mirror makes it possible to tap any amount and anywhere on PLC even between arrayed waveguides. Because this method basically consists of well-established PLC process, wire bonding process and flip-chip mounting process, it is suitable for mass production.