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1. CN1188239 - Optical protection switching system

Office China
Application Number 97123482.5
Application Date 30.12.1997
Publication Number 1188239
Publication Date 22.07.1998
Publication Kind A
IPC
G02F 1/00
GPHYSICS
02OPTICS
FDEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
1Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
G02B 6/28
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
24Coupling light guides
26Optical coupling means
28having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
CPC
B23C 5/10
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
CMILLING
5Milling-cutters
02characterised by the shape of the cutter
10Shank-type cutters, i.e. with an integral shaft
B23B 51/02
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
51Tools for drilling machines
02Twist drills
Y10T 407/1948
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
407Cutters, for shaping
19Rotary cutting tool
1946Face or end mill
1948with cutting edge entirely across end of tool [e.g., router bit, end mill, etc.]
Y10T 407/1966
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
407Cutters, for shaping
19Rotary cutting tool
1952Having peripherally spaced teeth
1962Specified tooth shape or spacing
1964Arcuate cutting edge
1966Helical tooth
Y10T 408/352
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
408Cutting by use of rotating axially moving tool
34Combined cutting means
352including rotating cutter other than rotating, axially moving Tool
Y10T 408/9097
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
408Cutting by use of rotating axially moving tool
89Tool or Tool with support
909Having peripherally spaced cutting edges
9095with axially extending relief channel
9097Spiral channel
Applicants Lucent Technologies Inc.
朗迅科技公司
Inventors Mohammad Taghi Fatehi
默罕麦德·塔格希·法特希
Wayne Harvey Knox
韦恩·哈维·诺克斯
Agents jiang shixun
中国国际贸易促进委员会专利商标事务所
Priority Data 08777892 31.12.1996 US
Title
(EN) Optical protection switching system
(ZH) 光保护交换系统
Abstract
(EN)
An optical line protection switching system is realized by employing a plurality of rare earth-doped fiber optical amplifiers as gain-switched optical connections, for example gain-switched optical distributors, i.e., commutators, and/or gain-switched optical selectors in a gain switched optical line protection switching system. In one embodiment, at least one or more gain switched optical distributors are employed to realize so-called head-end switching of an incoming optical signal and one or more gain switched optical selectors are employed to realize so-called tail-end switching of the optical signal to form a 1x1 (1xN) optical line protection switching system.

(ZH)

通过使用多个稀土掺杂光纤光放大器作为有增益的交换光连接,例如有增益的交换光分配器,即在一个有增益的交换光线路保护交换系统中的换向器和/或有增益的交换光选择器,来实现一个光线路保护交换系统。在一个实施例中,至少一个或多个有增益的交换光分配器用于实现所谓的输入光信号的首端交换以及一个或多个有增益的交换光选择器用于实现所谓的光信号的末端交换以形成一个1×1(1×N)光线路保护交换系统。