On-line wavelength calibration device and method of DBR (distributed bragg reflector) tunable laser
A technology for tuning lasers and calibrating devices, which is applied to lasers, laser components, semiconductor lasers, etc., can solve the problems of large wavelength intervals, low wavelength sensitivity, and inappropriateness of interferometers, and achieve high wavelength control accuracy and reduce wavelength control errors. , Accurately control the effect of error
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[0033] The present invention will be further described in detail below in conjunction with the drawings and specific implementation cases:
[0034] figure 1 It is a schematic diagram of the structure of the DBR tunable laser wavelength online calibration device of the present invention. Such as figure 1 As shown, the device includes:
[0035] DBR tunable laser 1, coupler 2, interferometer 3, photodetector 4, signal acquisition and processing circuit 5, laser drive circuit 6.
[0036] The coupler 2 receives the optical signal generated by the external DBR tunable laser 1, and transmits the reflected light to the photodetector 4;
[0037] The interferometer 3 receives the optical signal sent by the coupler 2, and generates reflected light and transmits it back to the coupler 2;
[0038] The photodetector 4 converts the optical signal into an electrical signal, and transmits it to the signal acquisition and processing circuit 5;
[0039] The signal acquisition and processing circuit 5 proc...
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