Relative Intensity Noise Suppression for Photonic Links
Craig Nelson, Archita Hati, David A. Howe
We propose and experimentally demonstrate a novel technique to reduce laser relative intensity noise (RIN). A RIN suppression servo is usually implemented by inserting an intensity modulator in the optical path and controlling measured light intensity with a closed loop servo system. We propose utilizing the intensity modulator already present in a photonic link to perform the task of RIN suppression as well as encoding the optical signal with the microwave sub-carrier. This technique provides suppression of 10 to 50 dB of laser RIN over a bandwidth of 10 MHz. Furthermore, we implement this technique in an optoelectronic oscillator (OEO), significantly improving its phase-noise performance due to the reduced effect of RIN on the phase noise of the oscillator.
, Hati, A.
and Howe, D.
Relative Intensity Noise Suppression for Photonic Links, IEEE Photonics Technology Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=842469
(Accessed May 23, 2022)