Optical module and optical device applicable to optical module

摘要

An optical module and an optical device applicable to the optical module, wherein the optical module includes a laser emission unit, a laser reception unit, a video detector and an optical assembly, the optical assembly including: a band-pass device F1 with a small-angle incidence filter sheet, wherein among optical signals transmitted to F1 via a common port of F1, the optical signal in a first optical wavelength band is passed by the small-angle incidence filter sheet and output to the video detector via the passing port thereof; and the optical signals in other bands are reflected by the small-angle incidence filter sheet and output via the reflection port thereof; a filter sheet F2 configured to pass the optical signal emitted by the laser emission unit to the reflection port of F1 and to reflect the optical signal, received by the laser reception unit, output via the reflection port of F1.

主权项

1. An optical module, comprising: a laser emission unit, a laser reception unit and a video detector, wherein the optical module further comprises an optical assembly comprising:
a band-pass device F1 arranged with a small-angle incidence filter sheet, the band-pass device F1 comprising a common port, a passing port and a reflection port, wherein among optical signals transmitted to the band-pass device F1 via the common port over an optical fiber connected with the optical module, an optical signal in a first optical wavelength band is passed by the small-angle incidence filter sheet and then output to the video detector via the passing port; and the optical signals in other bands are reflected at the small-angle by the small-angle incidence filter sheet and then output via the reflection port; where the small-angel refers to the angle between an incident light of the small-angle incidence filter sheet and an optical axis of the small-angle incidence filter sheet; and a filter sheet F2 configured to pass the optical signal in a second optical wavelength band emitted by the laser emission unit to the reflection port of the band-pass device F1 and to reflect the optical signal in a third optical wavelength band among the optical signals output via the reflection port of the band-pass device F1 to the laser reception unit, wherein the band-pass device F1 is further configured to reflect the optical signal in the second optical wavelength band at the small-angle, emitted into the reflection port thereof, to the common port thereof through the small-angle incidence filter sheet and to output the optical signal to the optical fiber via the common port thereof; and the second optical wavelength band is an optical wavelength band of an uplink optical data signal emitted by the optical module, the third optical wavelength band is an optical wavelength band of a downlink optical data signal received by the optical module, and the first optical wavelength band includes the optical wavelength band of a radio frequency signal received by the optical module but does not include the optical wavelength bands of the uplink optical data signal and the downlink optical data signal.