Patent ID: 9559493
Date: 2017-01-31
CPC Classifications: H01L,H01S,H04B

Claim:
1. A transmitter comprising: a PCB board; a laser element disposed on the PCB board and attached thereto; a power monitoring device disposed on the PCB board above the laser element and attached to the PCB board; a lens part disposed on the PCB board and above the laser element and the power monitoring device; an IC driver disposed on the PCB board and connected with the laser element through bond wires; and a feedback circuit for the IC driver connected with the power monitoring device through a plurality of bond wires; wherein: the power monitoring device comprises a silicon support layer being attached to the PCB board, a glass layer disposed above the silicon support layer, at least one sensing element disposed on the glass layer, and at least one metal pad disposed on the glass layer; the sensing element is suspended over the laser element and configured for sensing light directed thereto that is emitted by the laser element; and the silicon support layer comprises a cavity configured for accommodating the laser element.