AI Article Synopsis
- Traditional electro-optic frequency comb spectrometers use acousto-optic modulators (AOMs) for frequency shifting in interferometers.
- The study demonstrates that electro-optic phase modulators (EOMs) driven by a sawtooth waveform can replace AOMs, enhancing performance by reducing differential phase noise.
- This new method simplifies the production of compact, integrated photonic comb spectrometers on a chip, leveraging a single dual-drive Mach-Zehnder modulator (DD-MZM).
Article Abstract
Traditional electro-optic frequency comb spectrometers rely upon the use of an acousto-optic modulator (AOM) to provide a differential frequency shift between probe and local oscillator (LO) legs of the interferometer. Here we show that these modulators can be replaced by an electro-optic phase modulator (EOM) which is driven by a sawtooth waveform to induce serrodyne modulation. This approach enables direct frequency comb spectroscopy to be performed with a single dual-drive Mach-Zehnder modulator (DD-MZM), allowing for lower differential phase noise. Further, this method allows for simpler production of integrated photonic comb spectrometers on the chip scale.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10910350 | PMC |
| http://dx.doi.org/10.1364/OL.482597 | DOI Listing |
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