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Fig. 8 | PhotoniX

Fig. 8

From: Integrated heterodyne laser Doppler vibrometer based on stress-optic frequency shift in silicon nitride

Fig. 8

(Left) Top view photograph of the TriPleX PIC with the SSB-OFS. The circuit comprises 7 MZIs controlled by phase heaters and 4 PZT-based stress-optic modulators (SOMs). (Right) Top view photograph of the PolyBoard PIC implementing the dual-pol coherent receiver. The micro-optic elements of the polarization beam splitter (PBS) and the half-wave plate (HWP) are visible on the chip

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