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Femtometer-resolved wavelength monitor based on photodiode optoelectronic chromatic dispersion with RF phase-shift
Optics Letters
|June 1, 2022
Abstract:
The spectral sensitivity of photodiode-based optoelectronic chromatic dispersion is enhanced by phase-shift amplification using RF interferometry. With phase-shift amplification of G=4⋅104, a peak phase-shift sensitivity of Δθ = 27 deg/pm is achieved, corresponding to a spectral resolution of Δλres = 1 fm. This all-electronic solid-state technology can serve as an on-chip inexpensive technique for femtometer-resolved wavelength monitoring.

