Receiver optical module for receiving wavelength multiplexed optical signals and method to assemble the same

摘要

A receiver optical module to facilitate the assembling is disclosed. The receiver optical module includes an intermediate assembly including the optical de-multiplexer and the optical reflector each mounted on the upper base, and the lens and the PD mounted on the sub-mount. The latter assembly is mounted on the bottom of the housing; while, the former assembly is also mounted on the bottom through the lower base. The upper base is apart from the bottom and extends in parallel to the bottom to form a surplus space where the amplifying circuit is mounted.

主权项

1. An optical module for receiving optical signals each having a specific wavelength different from others, comprising:
a first assembly including a sub-mount, a plurality of photodiodes, and a plurality of concentrating lenses each corresponding to respective photodiodes, the sub-mount mounting the photodiodes and the concentrating lenses thereon; a second assembly including an upper base, a lower base, an optical de-multiplexer, and an optical reflector, the upper base mounting the optical de-multiplexer and the optical reflector thereon, the optical de-multiplexer de-multiplexing the optical signals depending on the specific wavelengths, the optical reflector reflecting the de-multiplexed optical signals toward the photodiodes through the respective concentrating lenses; and a housing having a bottom to install the first assembly and the second assembly thereon, wherein the sub-mount of the first assembly is directly mounted on the bottom and the upper base of the second assembly is indirectly mounted on the bottom through the lower base.