Swept Source Lidar: simultaneous FMCW ranging and nonmechanical beam steering with a wideband swept source

Slow light with a swept-frequency source.

ct: We introduce a new concept for stimulated-Brillouin-scattering-based slow light in optical fibers that is applicable for broadly-tunable frequency-swept sources. It allows slow light to be achieved, in principle, over the entire transparency window of the optical fiber. We demonstrate a slow light delay of 10 ns at 1.55 μm using a 10-m-long photonic crystal fiber with a source sweep rate of...

Swept-Source OCT Angiography: SS OCT AngioTM

High-Coherence Wavelength Swept Light Source

[Summary] Optical technologies that have so far been restricted to the field of optical communications are now starting to be applied in new fields, especially medicine. Optical Frequency Domain Reflectometry (OFDR) offering fast and accurate target position measurements is one focus of attention. The Wavelength Swept Light Source (WSLS) is said to be one of the key devices of OFDR, whose sweep...

Wavelength swept amplified spontaneous emission source.

We present a new, alternative approach to realize a wavelength swept light source with no fundamental limit to sweep speed. Amplified spontaneous emission (ASE) light alternately passes a cascade of optical gain elements and tunable optical bandpass filters. We show that for high sweep speeds, the control signal for the different filters has to be applied with a defined, precise phase delay on ...

Choroidal Imaging with Swept Source Optical Coherence Tomography – A Review

The choroid provides up to 70 % of blood and oxygen to the eye. Pathological changes of this vascular tissue may lead to malnutrition of the retina and therefore be involved in the pathogenesis of numerous retinal disorders. Swept source optical coherence tomography (SS-OCT) is a new development of a non-invasive imaging technique that uses a tunable laser source with a higher wavelength light ...