Temperature-insensitive integrated wavelength division multiplexer
A wavelength division multiplexer and wavelength division multiplexing technology, which is applied in the direction of wavelength division multiplexing systems, instruments, optical waveguides and light guides, etc., can solve the problems of difficult precise control and increased process, so as to improve the yield and improve production efficiency , the effect of increasing density
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[0018] like figure 1 , as shown in Figure 2, the input end of the free propagation area of the wavelength division multiplexing chip 4 is directly coupled with the input optical fiber 1, and a position offset compensation device is installed on the output waveguide 6 of the free transmission area, and the output fiber array is coupled on the output waveguide 6 2.
[0019] One end of the position offset compensation device is fixedly connected to the output waveguide 6, and the other end is fixed on the expansion rod 3 with thermal expansion performance, and the expansion rod 3 can drive the output waveguide 6 to move vertically.
[0020] like image 3 As shown, the position offset compensating device is input from the temperature change signal of the wavelength division multiplexing chip 4 to the signal processor 11, and the output driving signal is sent to the micro-displacement actuator 10 to drive the telescopic rod (12) without thermal expansion performance to drive the...
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