Yifei CHEN, Shangqing SHI, Binfeng YUN. Automatic calibration and control system of optical switching delay line[J]. Optics and Precision Engineering, 2023, 31(15): 2161
- Optics and Precision Engineering
- Vol. 31, Issue 15, 2161 (2023)
Fig. 1. Block diagram of OSDL chip architecture with automatic calibration and control system
Fig. 2. Schematic diagram of optical power meter module
Fig. 3. Calibration and accuracy test results of multi-channel optical power meter module
Fig. 4. Voltage output stability test of multi-channel optical power meter module
Fig. 5. Schematic of communication interface
Fig. 6. Flow chart of driving voltage calibration for single optical switch
Fig. 7. Flow chart of multi-channel OSDL chip calibration and specified channel control
Fig. 8. Experimental setup of automatic calibration and control of OSDL chip
Fig. 9. Structure of 5-bit optical switching delay line
Fig. 10. Measured results of optical power and driving voltage of 6 optical switches in 5-bit OSDL chip calibration
Fig. 11. Measured transmission spectra of 5-bit OSDL in four different delay states
Fig. 12. Measured delay time of 5-bit OSDL chip calibrated by two systems
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Table 1. Calibration results of driving voltages of optical switches in cross and through states
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