Experimental evaluation demonstrates precise operating point stabilization in optically powered remote modulators, indicating robust noise rejection with minimal signal distortion.
The system for stabilizing an operating point of remote integrated optical Mach–Zehnder modulators with a dual output has been developed. The designed electronic circuit for precise bias control had low power consumption (less than 5 mW) and could be powered through optical fiber by signal optical radiation at a wavelength of 1550 nm with a power of 15 mW. The experimental demonstration of common mode noise rejection proved a high accuracy of the quadrature operating point setting and stabilization, resistance to the light intensity noise, and low level noise and distortion added to the transmitted signals.
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Petrov et al. (2020) studied this question.
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