Fibers. Selective Excitation of Annular Zones in a Graded Index Multimode Fiber
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M. Calzavara
Summary
A simple and reliable method to excite selectively different annular zones of a multimode graded index fiber has been implemented. This technique, exploring concentric layers of the fiber core with different chemical compositions, can find application in differential measurements of material properties. On the basis of a ray optics picture of propagation, a light beam having angular and spatial dimensions much smaller than the relevant dimensions of the fiber was employed for selective excitation.
Different annular configurations have been obtained varying the position and angle of incidence on the fiber end. Results obtained by an apparatus consisting of standard components only on low loss communication fibers are reported for different refractive index profiles and lengths up to 100 meters.
© 2016 by Walter de Gruyter Berlin/Boston
Artikel in diesem Heft
- Titelei
- Contents
- Fibers. Selective Excitation of Annular Zones in a Graded Index Multimode Fiber
- Coupling. Non-Symmetric Behaviour of a Joint Between Multimode Fibers
- Coupling. Theory of Coupling Loss of an Ion Exchanged Multimode Channel Waveguide to Optical Fibers
- Detectors. Time Response of Long Wavelength PIN Photodiodes Based on GaInAs
- Systems. An Analog High-Performance Transfer-Stabilized Fiber-Optic Transmission System for Baseband Video Signals
- Miscellaneous
- Meetings Calendar
- News
- New Books
- New Products
- Imprint
- Hints for Authors
Artikel in diesem Heft
- Titelei
- Contents
- Fibers. Selective Excitation of Annular Zones in a Graded Index Multimode Fiber
- Coupling. Non-Symmetric Behaviour of a Joint Between Multimode Fibers
- Coupling. Theory of Coupling Loss of an Ion Exchanged Multimode Channel Waveguide to Optical Fibers
- Detectors. Time Response of Long Wavelength PIN Photodiodes Based on GaInAs
- Systems. An Analog High-Performance Transfer-Stabilized Fiber-Optic Transmission System for Baseband Video Signals
- Miscellaneous
- Meetings Calendar
- News
- New Books
- New Products
- Imprint
- Hints for Authors
