G - Physics – 02 – B
Patent
G - Physics
02
B
G02B 6/028 (2006.01) G01N 21/65 (2006.01) G02B 5/18 (2006.01) G02B 6/02 (2006.01)
Patent
CA 2386975
A novel multimode fiber structure with modal propagation characteristics tailored to facilitate the creation of narrowband, high reflectivity, fiber Bragg gratings is disclosed. The fiber structure comprises concentric cylindrical shells of higher and lower refractive index material. A full vector, second order finite element method is used to analyze the proposed multimode fiber structure. Simulations of the modal profiles show that high order modes are localized to particular high refractive index shells. We present the theoretical characterization of the modal propagation constant as a function of inner shell radius, shell separation, and harmonic mode parameter. It is shown that a fiber with a minimum inner shell radius of at least 25.lambda. (where .lambda. is the vacuum wavelength), and a minimum shell separation of at least 10.lambda. provides a reasonable trade off between fiber size and grating performance. A simulation of the multimode fiber grating shows that a grating with a FWHM bandwidth on the order of 10-4.lambda. is theoretically possible if optical power is launched strictly into modes with angular harmonic parameter p=1.
Sipe John Edward
Smith Peter W.e.
Szkopek Thomas
Hill & Schumacher
Sipe John Edward
Smith Peter W.e.
Szkopek Thomas
LandOfFree
Novel multimode fiber for narrowband bragg gratings does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Novel multimode fiber for narrowband bragg gratings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Novel multimode fiber for narrowband bragg gratings will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1864794