TW200628866A - Optical sub-module device of optical transceiver - Google Patents

Abstract

The present invention relates to a MUX and DMUX optical sub-module, comprising an emitting module or receiving module or both. The emitting module has four laser sources, each emitting optical signals with different wavelengths, which may, after collimation, be reflected by corresponding reflectors to the same plane so as to be coupled by a thin film filter and emitted from an optical fiber after being coupled by a lens; the receiving module comprises a thin film filter for splitting the incident optical signal into individual optical signal which may be reflected to a optical sensing element by four reflectors so as to be converted into an electric signal; the reflector is adjusted bi-axially so as to refine its slanted angle, thus providing the function of active alignment; on the main body of the emitting module or receiving module disposed a positioning slot for accommodating the laser source or the optical sensing element, wherein the depth of the positioning slot is set in accordance with the wavelength of relevant optical signal so as to provide a passive alignment function; thus, the optical sub-module may optimize the optical coupling efficiency by the active or passive alignment.