Abstract:
A wavelength alignment method includes: emitting a first optical signal by using a laser; filtering the first optical signal by using a filter, and then transmitting a second optical signal; monitoring an extinction ratio of the second optical signal and an optical power of the second optical signal; and adjusting a working temperature of the laser and/or a working temperature of the filter to a target working temperature when the extinction ratio of the second optical signal exceeds an upper limit of a first extinction ratio threshold range and the optical power of the second optical signal exceeds a lower limit of a first optical power threshold range or when the extinction ratio of the second optical signal exceeds a lower limit of a first extinction ratio threshold range and the optical power of the second optical signal exceeds an upper limit of a first optical power threshold range.
Abstract:
The present invention provides a WDM which includes three ports, the three ports each include an optical fiber array and a micro lens array matching the optical fiber array; an optical signal is transmitted to a filter after passing through a corresponding micro lens in a first micro lens array of the common port; transmitted light of the optical signal enters a corresponding micro lens in a second micro lens array of the pass port after passing through the filter, and then the light is output by a corresponding optical fiber in a second optical fiber array of the pass port; reflected light of the optical signal enters a corresponding micro lens in a third micro lens array of the reflection port after being reflected by the filter, and the light is output by a corresponding optical fiber in a third optical fiber array of the reflection port.