@article{14759,
  abstract     = {Proper operation of electro-optic I/Q modulators relies on precise adjustment and control of the relative phase biases between the modulator’s internal interferometer arms. We present an all-analog phase bias locking scheme where error signals are obtained from the beat between the optical carrier and optical tones generated by an auxiliary 2 MHz 𝑅𝐹 tone to lock the phases of all three involved interferometers for operation up to 10 GHz. With the developed method, we demonstrate an I/Q modulator in carrier-suppressed single-sideband mode, where the suppressed carrier and sideband are locked at optical power levels <−27dB
 relative to the transmitted sideband. We describe a simple analytical model for calculating the error signals and detail the implementation of the electronic circuitry for the implementation of the method.},
  author       = {Wald, Sebastian and Diorico, Fritz R and Hosten, Onur},
  issn         = {2155-3165},
  journal      = {Applied Optics},
  keywords     = {Atomic and Molecular Physics, and Optics, Engineering (miscellaneous), Electrical and Electronic Engineering},
  number       = {1},
  pages        = {1--7},
  publisher    = {Optica Publishing Group},
  title        = {{Analog stabilization of an electro-optic I/Q modulator with an auxiliary modulation tone}},
  doi          = {10.1364/ao.474118},
  volume       = {62},
  year         = {2023},
}