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1. US20130070237 - Method and metric for selecting and designing multimode fiber for improved performance

Office United States of America
Application Number 13667041
Application Date 02.11.2012
Publication Number 20130070237
Publication Date 21.03.2013
Grant Number 08488115
Grant Date 16.07.2013
Publication Kind B2
IPC
G01N 21/00
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
CPC
H04B 10/0775
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
10Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
07Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
075using an in-service signal
077using a supervisory or additional signal
0775Performance monitoring and measurement of transmission parameters
G01M 11/338
GPHYSICS
01MEASURING; TESTING
MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
11Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
30Testing of optical devices, constituted by fibre optics or optical waveguides
33with a light emitter being disposed at one fibre or waveguide end-face, and a light receiver at the other end-face
338by measuring dispersion other than PMD, e.g. chromatic dispersion
G02B 6/0288
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
028with core or cladding having graded refractive index
0288Multimode fibre, e.g. graded index core for compensating modal dispersion
Applicants Panduit Corp.
Inventors Pimpinella Richard J.
Tudury Gaston E.
Agents Clancy Christopher S.
Smolinski Zachary J.
Astvatsaturov Yuri
Title
(EN) Method and metric for selecting and designing multimode fiber for improved performance
Abstract
(EN)

A new metric applicable to the characterization and design of multimode fiber (MMF) is described. The metric is derived from a Differential Mode Delay (DMD) measurement and when used in combination with industry-standard metrics such as Effective Modal Bandwidth (EMB) and DMD, yields a more accurate prediction of MMF channel link performance as measured by Bit Error Rate (BER) testing. The metric can also be used in the design of MMF for improved bandwidth performance. When implemented as a test algorithm in production, it can be used to select, sort, or verify fiber performance. This process can yield a multimode fiber design with a greater performance margin for a given length, and/or a greater length for a given performance margin.