Passive optical networks system, coupler and method
A coupler and optical signal technology, applied in the field of passive optical network, can solve the problems that large-scale deployment is unattractive, difficult to implement, and increases system cost and maintenance requirements
Inactive Publication Date: 2015-04-15
HUAWEI TECH CO LTD
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- Application Information
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Problems solved by technology
However, optical amplifiers or optical regenerators are active devices that add expense and / or maintenance requirements to the system and may not be attractive for large scale deployments
Implementing long-distance PON without using optical amplifiers or optical regenerators is attractive but difficult to achieve
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[0022] It should be understood at the outset that although an exemplary implementation of one or more embodiments is provided below, the disclosed systems and / or method. The invention is in no way limited to the exemplary implementations, drawings, and techniques presented below, including the exemplary designs and implementations set forth and illustrated herein, but may be protected within the scope of the appended claims along with their entirety of equivalents. make changes within the scope.
[0023] The present invention discloses systems and devices for deploying long-reach / high-splitting PONs without the use of optical amplifiers and optical regenerators. These long-distance / high-splitting-ratio PON systems include, for example, low-loss mode coupling receivers at the OLT, which can be used to increase the maximum transmission distance and / or splitting ratio of the PON. These PON systems may contain multiple different low-loss mode coupled receivers which may be base...
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An mode coupler comprising a plurality of single mode waveguides configured to transport a plurality of single mode signals, and a detector coupled to the single mode waveguides and configured to detect the single mode signals, wherein the single mode signals are substantially coupled without loss from the single mode waveguides to the detector. Also disclosed is an Passive Optical Network System comprising a mode coupler configured to couple a plurality optical signals into a plurality of modes, and a receiver coupled to the mode coupler and configured to detect the modes to obtain the optical signals, wherein the optical signals are coupled from single mode fibers.. Also disclosed is a detection method comprising receiving a plurality of single mode optical channels, coupling the single mode optical channels into a multimode channel, and detecting the optical modes corresponding to the channels in the multimode channel.
Description
[0001] Cross reference to related applications [0002] This application claims U.S. Provisional Patent Application No. 61 / 110,384, filed October 31, 2008, by Ning Cheng et al., entitled "Passive Optical Network with Mode-Coupled Receivers," and filed by Ning Cheng et al. Priority to U.S. Application No. 12 / 606,872, entitled "Passive Optical Network with Mode-Coupled Receivers," filed October 27, 2009 by Cheng et al., the entire contents of which are incorporated by reference at in this application file. technical field [0003] The present invention relates to passive optical network (passive optical network; PON) technology, and more specifically, to a passive optical network system, coupler and method. Background technique [0004] Increases in Internet traffic and emerging multimedia applications such as video-on-demand, high-definition television (TV), video conferencing, and interactive online gaming require increased access network bandwidth. In order to meet the in...
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IPC IPC(8): H04B10/2581
CPCH04B10/272G02B6/421G02B6/4206H04J14/04G02B6/12004H04J14/0282H04J14/02H04B10/2581H04J14/052
Inventor 程宁弗兰克·J·埃芬博格
Owner HUAWEI TECH CO LTD