Fig. 13

Experimental results from the testing of the SSB-OFS frequency shifter. a Electrical spectrum of the beating signal on the PD. The fundamental frequency shift at 2.5 MHz is visible. The SBSR is 39 dB, limited the 2^nd order harmonic sideband at 5 MHz. b Phase-shift relative to the applied driving voltage for the four SOMs. The stress-optic response is linear in the interval 10–90 V. The characterization was performed with a rising slope of 100 V peak-to-peak amplitude and 10 µs duration