| 摘要 |
PURPOSE:To make a titled module small in size by providing a photodetector and a light emitting element brought to bonding on a silicon substrate, and an optical fiber connected to other end face of an optical waveguide. CONSTITUTION:A waveguide type optical module is operated by applying a driving current to a semiconductor laser 3 and oscillating it. Signal light from the semiconductor laser 3 is led to a quartz compound glass optical waveguide 2 through an end face 2a, and led into an optical fiber 5 through an end face 2c. On the contrary, signal light from the optical fiber 5 is led to the quartz compound glass optical waveguide 2 through the end face 2c, and a part of said light is detected by a photodetector 4 through a Y-shaped branching part and an end face 2b. In this regard, the semiconductor laser 3 is accompanied with heating, but it is radiated on a silicon substrate 1 having good thermal conductivity, therefore, the continuous operation can be executed. |
