Patent ID: 7263112
Filing Date: 2007-08-28
Classification: H01L,H01S

Abstract:
1. An optical module, comprising: a laser diode for emitting light, said laser diode having a light-transmitting facet and a light-reflecting facet opposite to said light-transmitting facet, said laser diode having a first optical axis connecting said light-emitting facet to said light-reflecting facet; a Peltier device having upper and lower surfaces, said Peltier device controlling a temperature of said laser diode; a block, mounted on said upper surface of said Peltier device, said block having a device mounting portion and a light-reflecting portion, said device mounting portion mounting said laser diode thereon and said light-reflecting portion including a surface for reflecting said light emitted from said light-reflecting facet of said laser diode; a semiconductor photodiode for monitoring said light emitted from said laser diode and reflected by said block, said photodiode having a second optical axis different from and not parallel to said first optical axis of said laser diode; and a CAN package for enclosing said laser diode, said block, said Peltier device, and said photodiode therein, said CAN package including a disk-shaped stem facing said lower surface of said Peltier device and mounting said Peltier device thereon, wherein said photodiode is mounted outside of said Peltier device so as to be thermally isolated from said upper surface of said Peltier device.