Abstract
We investigate self-seeded optical sources for interferometric sensing applications and show that they can, depending on optical filter bandwidth, provide high-output power, high wavelength temperature stability (<5 ppm/°C), low relative intensity noise (<-140 dBc/Hz) and low coherence lengths (<100 um). We characterize the key performance indicators for a range of optical filter bandwidths and provide insight into key design parameters of such sources for interferometric sensors.
Highlights
Low-coherence sources are used in a number of interferometric sensor applications to obtain high resolution optical images [1] or to measure different physical quantities such as rotation in interferometric fiber optic gyroscopes (IFOG)
We investigate self-seeded optical sources for interferometric sensing applications and show that they can, depending on optical filter bandwidth, provide high-output power, high wavelength temperature stability (
This approach can be integrated onto a chip using heterogeneous silicon sources integrated with low loss silicon nitride waveguides with lengths of tens of meters [20,21,22]
Summary
Low-coherence sources are used in a number of interferometric sensor applications to obtain high resolution optical images [1] or to measure different physical quantities such as rotation in interferometric fiber optic gyroscopes (IFOG). Title High temperature stability, low coherence and low relative intensity noise semiconductor sources for interferometric sensors.
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