研究目的
To present key ingredients and best practices for implementing simple, effective, and robust control and calibration procedures for arbitrary photonic integrated circuit (PIC) architectures, including techniques to cancel out mutual crosstalk among thermal tuners, exploit labelling to identify different optical signals, and use input modulated signals to automatically reshape the frequency response of the device.
研究成果
The paper demonstrates effective strategies for control and calibration of PICs, including thermal crosstalk cancellation, signal labelling, and automatic frequency response reshaping. These techniques enable robust and efficient tuning and locking of PICs, with applications demonstrated in various architectures. The dynamic generation and updating of lookup tables for hitless filters on a DWDM grid is also shown, highlighting the adaptability of the approach to changing operational requirements.
研究不足
The accuracy of the thermal crosstalk matrix T impacts the effectiveness of the TED technique. Direct optical measurement of T is not always practicable, requiring alternative strategies. The approach may require adaptation for very large scale PICs or when optical access to each tunable element is limited.
