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In this paper, we review the recent advance on optical short reach transmission systems enabled by DSP. Our recent progress on high-speed short reach transmission systems employing advanced DSP is summarized.
Fiber-optic vibration sensing system using a tilted fiber grating and a vertical-cavity surface-emitting laser (VCSEL) has been demonstrated. Dynamic vibration measurement up to 200 Hz with improved signal-to-noise ratio better than 40 dB was achieved.
A compact tip-reflection fiber-optic vibration sensing system that uses a lateral-offset tilted fiber grating (TFBG) as sensor head and a vertical-cavity surface-emitting laser (VCSEL) as light source has been demonstrated. Dynamic mechanical vibration measurement up to 200 Hz with signal to-noise ratio better than 40 dB has been achieved.
We propose a compact tip-reflection fiber-optic vibration sensing system that uses a lateral-offset tilted fiber grating (TFBG) as sensor head and a vertical-cavity surface-emitting laser (VCSEL) as light source. Dynamic mechanical vibration measurement up to 200 Hz with signal-to-noise ratio better than 30 dB has been achieved.
A fiber-optic vibration sensing system that uses a tilted fiber Bragg grating (TFBG) and a vertical-cavity surface-emitting laser (VCSEL) has been demonstrated. The backward-propagating low-order cladding modes excited by the TFBG can be effectively recoupled to the fiber core via a lateral-offset-splice upstream the TFBG and the amount of recoupling varies strongly with fiber curvature, providing...
This paper presents a FBG sensor interrogation system utilizing VCSEL laser as the light source. Using saw tooth signal to drive the VCSEL input current, a continuous spectrum tuning range of 2 nm can be obtained. Relationship between wavelength tuning range and scanning speed of the VCSEL is studied. TDM method is applied to increase the number of sensors in the system.
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