Two-port tunable TFF optical filter
An optical filter and port technology, applied in the field of two-port tunable TFF optical filters, can solve the problems of adding great difficulty to the reception of transmitted optical signals, achieve the effects of solving polarization-related loss, improving tuning accuracy, and simple structure
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[0056] The two-port tunable TFF optical filter of the present invention will be described in detail below in conjunction with the embodiments and drawings.
[0057] Such as Figure 8 As shown, the two-port tunable TFF optical filter of the present invention includes: tunable optical filter unit A, which feeds back the input signal light part to wavelength detection unit B; wavelength detection unit B, and tunable optical filter Unit A is connected to detect the change of the received signal optical power and output to the control unit C; Control unit C is connected to the wavelength detection unit B, and judges the output optical center through the change of the output optical power of the wavelength detection unit B The wavelength drift situation, and then correct the tuning controller connected to the control unit C. among them:
[0058] The tunable optical filter unit A includes: a collimator 17, which collimates ordinary light; a thin film filter 4, which is located on the out...
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