Abstract:
본 발명은 개방형 광가입자망 시스템에 관한 것으로, 하나의 광가입자망을 다수의 서비스제공자들과 다수의 가입자들이 동시에 사용할 수 있도록 개방하여 광가입자망의 사용효율을 증가시키고, 각 가입자가 복수의 서비스제공자들로부터 각기 다른 서비스를 다중으로 제공받을 수 있도록 하여, 유연한 서비스의 선택 및 변경이 가능하여 광인프라의 사용효율을 높일 수 있다.
Abstract:
Photonic cross-connect with a receiving part for receiving incoming WDM signals (WR1 - WR3) and with a transmitting part for transmitting outgoing WDM signals (WT1 - WT3), whereas a cross connect section (PXC) has at least two drop outputs for outputting intermediate WDM-drop-signals (WIR1, WIR2) comprising selected channels of received WDM-signals (WR1 - WR3) requiring a similar dispersion compensation, and at least two drop paths (DCR1-DX1, DCR2-DX2) comprising a dispersion compensators (DCR1, DCR2) and at least to add paths (MX1-DCT1, MX2-DCT2) for pre-compensation of intermediate WDM-add- signals (WIT1, WIT2), which are added to transmitted WDM signals (WT1 - WT3).
Abstract:
IIn an Optical Add-Drop Multiplexer, a drop section comprises a Wavelength Selective Switch (WSS) having at least one drop-port, the WSS being operative to couple a respective set of w (where w>1) wavelength channels from a received Wavelength Division Multiplexed (WDM) signal to each drop port. A respective 1:s power splitter is associated with each drop port. Each power splitter supplies the respective set of channels received from its drop port to each one of a corresponding set of coherent receivers. Each coherent receiver operates to receive a selected one of the respective set of channels.
Abstract:
Modular WSS-based Communications system with colorless and network-port transparent add/drop interfaces is described herein. According to certain aspects of the invention, equipment architecture is provided that enables a linear, ring, and mesh optical network. The embodiments of the invention are primarily on how to add and drop signals at a node of the network. The embodiments of the invention are based on the use a wavelength selective switch (WSS), which is an emerging component technology. Other methods and apparatuses are also described.
Abstract:
An optical backhaul network for a wireless broadband service is provided. The optical backhaul network for a wireless broadband service includes: a plurality of optical network units for outputting an uplink optical signal having a multiplexed wavelength; an optical line termination for outputting a downlink optical signal of a single mode in order to transmit the downlink optical signal to the plurality of the optical network units in a broadcasting form; and a plurality of remote nodes for outputting a part of the downlink optical signal to the plurality of the optical network units and for outputting the uplink optical signal to the optical line termination. Therefore, one center and a plurality of access points can be efficiently connected.
Abstract:
An example embodiment of the present invention is a non-blocking wavelength switching architecture that enables graceful scaling of a network wavelength switching node from small to large fiber counts using fixed size bidirectional 1xN Wavelength Selective Switches (WSS). The architecture uses an intermediate broadcast and select layer implemented using optical splitters and WSSs to eliminate wavelength blocking.
Abstract:
The invention generally relates, in one aspect, to an interferometer system. The interferometer system includes a splitter/combiner element (SCE), a first bi-directional optical path, and a second bi-directional optical path.
Abstract:
The invention generally relates, in one aspect, to an interferometer system. The interferometer system includes a splitter/combiner element (SCE), a first bi-directional optical path, and a second bi-directional optical path.