Silicon photonics MIOC with forward-biased phase modulators for closed-loop operation in an interferometric fiber optic gyroscope

We present a Si-MIOC incorporating forward-biased pn junction phase modulators, designed for potential use in closed-loop IFOGs. These modulators demonstrate a broad linear phase modulation range under forward bias, effectively addressing the dynamic range limitations commonly associated with silicon modulators. By implementing phase ramp modulation, we induced controlled phase differences, confirming the modulators’ capability to support phase nulling in closed-loop operation and establishing the feasibility of utilizing Si-MIOCs for closed-loop IFOG applications.