Journal ArticleDOI
Compact fiber-optic curvature sensor based on super-mode interference in a seven-core fiber.
G. Salceda-Delgado,A. Van Newkirk,Jose Enrique Antonio-Lopez,Alejandro Martinez-Rios,Axel Schülzgen,R. Amezcua Correa +5 more
Reads0
Chats0
TLDR
A compact, low loss, and highly sensitive optical fiber curvature sensor is presented, which allows for using either visibility or spectral shift for sensor interrogation when the device is bent.Abstract:
A compact, low loss, and highly sensitive optical fiber curvature sensor is presented. The device consists of a few-millimeter-long piece of seven-core fiber spliced between two single-mode fibers. When the optical fiber device is kept straight, a pronounced interference pattern appears in the transmission spectrum. However, when the device is bent, a spectral shift of the interference pattern is produced, and the visibility of the interference notches changes. This allows for using either visibility or spectral shift for sensor interrogation. The dynamic range of the device can be tailored through the proper selection of the length of the seven-core fiber. The effects of temperature and refractive index of the external medium on the response of the curvature sensor are also discussed. Linear sensitivity of about 3000 nm/mm−1 for bending was observed experimentally.read more
Citations
More filters
Proceedings ArticleDOI
3D Bending Sensor Combining Multicore Fiber with a Mode-Selective Photonic Lantern
Amy Van Newkirk,A. M. Velazquez-Benitez,Jose Enrique Antonio-Lopez,Jacques Albert,Rodrigo Amezcua-Correa,Axel Schülzgen +5 more
TL;DR: In this article, a bending sensor is demonstrated using the combination of a mode-selective photonic lantern and a multicore fiber for simultaneous measurements of bending direction and radius of curvature.
Journal ArticleDOI
High temperature and vector curvature sensor with high linearity and sensitivity based on asymmetric dual-core photonic crystal fiber
TL;DR: In this article, a high linear sensitivity fiber temperature and vector curvature sensor based on dual-core Photonic Crystal Fiber (DCPCF) was designed and implemented, which can realize high linear (0.997) vector bending sensing on the plane where the two cores are located.
Journal ArticleDOI
Surface Curvature Sensor Based on Intracavity Sensing of Fiber Ring Laser
TL;DR: In this paper , a fiber-optic surface curvature sensor, based on intracavity sensing of fiber ring laser (FRL), is experimentally demonstrated, where a no-core fiber-based filter performs as the sensing head of the FRL sensor.
Patent
Multi-function semiconductor and electronics processing
TL;DR: In this article, a method of tailoring beam characteristics of a laser beam during fabrication of an electronic device is proposed, which includes perturbing the laser beam propagating within a first length of fiber to adjust the one or more beam characteristics.
Patent
Optical power density control in fiber-coupled laser
TL;DR: In this article, an optical power control system includes a laser source to provide an optical beam, a variable beam characteristics (VBC) fiber, and a controller operatively coupled to the VBC fiber and configured to control, in response to information indicating change in optical power of the optical beacon, different states of perturbation so as to control optical power density.
References
More filters
Journal ArticleDOI
Curvature loss formula for optical fibers
TL;DR: In this article, the curvature loss for optical fibers with constant radius of curvature of their axes is derived by expressing the field outside of the fiber in terms of a superposition of cylindrical outgoing waves.
Journal ArticleDOI
Refractometry based on a photonic crystal fiber interferometer
TL;DR: A simple and compact modal interferometer for applications in refractometry that is highly stable over time, has low temperature sensitivity, and is suitable for measuring indices in the 1.330-1.440 range is reported.
Journal ArticleDOI
Single-Mode Fiber Refractive Index Sensor Based on Core-Offset Attenuators
TL;DR: In this paper, a fiber Michelson interferometer refractive index (RI) sensor with a single core-offset attenuator and a layer of ~ 500-nm gold coating was demonstrated.
Journal ArticleDOI
Optical bend sensor based on measurement of resonance mode splitting of long-period fiber grating
TL;DR: In this article, an effective method of realizing optical bend sensing based on the measurement of bending-curvature encoded resonance mode splitting of long-period fiber grating was proposed.
Journal ArticleDOI
Multicore fiber sensor for high-temperature applications up to 1000°C
J. Enrique Antonio-Lopez,Zeinab Sanjabi Eznaveh,Patrick LiKamWa,Axel Schülzgen,Rodrigo Amezcua-Correa +4 more
TL;DR: A novel high temperature sensor based on customized multicore fiber (MCF) spliced between two standard single-mode fibers is proposed and experimentally demonstrated, enabling temperature measurements with high sensitivity and accuracy.