Fig. 4: Reconfiguration of photonic integrated circuits (PICs) by a micro-actuator.
From: Optically-driven organic nano-step actuator for reconfigurable photonic circuits
a Schematic of in situ tuning of PICs by controlling micro-actuators on a photonic chip. The purple and red dashed box plots depict the situations where the actuator is on and off the microring, respectively. b and c The evolution of transmission spectra of a microring resonator as the micro-actuator crosses it. The resonance frequency of the microring is tuned over a range of about 5.2 GHz. The curve labeled with number (i) corresponds to the transmission spectrum of step 110 in (b), (ii–vii) are the transmission spectra from steps 1492 to 1497, respectively. d Snapshots of micro-actuator crossing the microring resonator, corresponding to the spectra shown in (c).
