Part I
This presentation introduces the modeling of Relative Intensity Noise (RIN) suppression in lasers using balanced photodiodes within the OptiSystem software. It demonstrates how a DFB laser, when operated at twice its threshold current, generates significant RIN, which can be effectively suppressed through a balanced detection scheme.
Part II
Expanding on Part I, this presentation explores advanced RIN suppression techniques using RF tones and balanced photodiodes. By introducing a 180° phase-shifted RF tone, the simulation mimics high-fidelity experimental setups, achieving noise floor reduction. The work highlights how SNR must be manually calculated and compares results for both DFB and CW lasers, providing insight into balanced photodetection under modulated RF conditions.
