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WDM-PON system using self-injection locking, optical line terminal thereof, and data transmission method

A WDM-PON, optical line terminal technology, applied in the field of wavelength division multiplexing passive optical network system and its optical line terminal, can solve the problems of low efficiency and complex technology

Inactive Publication Date: 2008-11-12
LUXPERT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the technique is complex and inefficient in implementing the system

Method used

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  • WDM-PON system using self-injection locking, optical line terminal thereof, and data transmission method
  • WDM-PON system using self-injection locking, optical line terminal thereof, and data transmission method
  • WDM-PON system using self-injection locking, optical line terminal thereof, and data transmission method

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Embodiment Construction

[0017] Hereinafter, a WDM-PON system using self-injection locking, an optical line terminal thereof, and a data transmission method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0018] figure 1 is a block diagram illustrating a WDM-PON system 10 using self-injection locking according to an embodiment of the present invention.

[0019] The WDM-PON system 10 according to this embodiment includes an Optical Line Terminal (OLT) 100 and a Remote Node (RN) 200 . The optical line terminal 100 includes an optical transceiver 110 , a multiplexer 120 , and a reflector 130 , and the remote node 200 includes a demultiplexer 210 . The OLT 100 and the remote node 200 are connected to each other through a feeder fiber. Specifically, the WDM-PON system 10 according to this embodiment has a reflector installed on the input side of the multiplexer, which is different from the structure in the related art.

[002...

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Abstract

Disclosed are a wavelength division multiplexing-passive optical network (WDM-PON) system using self-injection locking, an optical line terminal thereof, and a data transmission method. A wavelength division multiplexing-passive optical network (WDM-PON) system according to an aspect of the invention includes an optical line terminal. The optical line terminal includes a reflector that is installed at the input side of a multiplexer and reflects an optical signal having a predetermined wavelength, and a light source that generates a multimode optical signal to transmit the generated multimode optical signal to the multiplexer through the reflector, receives reflected light by the reflector, and oscillates at a wavelength of the received reflected light.; According to the aspect of the invention, it is not necessary to separately control the temperature of a light source for a downstream signal, and stable communication can be performed by collectively controlling wavelengths of downstream channel optical signals for downstream channels through temperature control of the multiplexer.

Description

technical field [0001] The invention relates to a wavelength division multiplexing passive optical network (WDM-PON) system, an optical line terminal thereof, and a data transmission method. More particularly, the present invention relates to a high-speed large-capacity WDM-PON system using a reflector such as a Bragg grating that reflects a signal having a specific wavelength and a light source for self-injection locking using reflected light. Background technique [0002] A wavelength division multiplexing (WDM) system means a communication system that transmits different signals using laser light having different wavelengths, and multiplexes multiple optical carrier signals in a single optical fiber. The system adds the ability to communicate data and enables two-way communication over a single fiber optic line. [0003] Wavelength Division Multiplexed Passive Optical Network (WDM-PON) means a network that distinguishes the wavelengths of multiple optical signals for sen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04J14/02H04B10/07H04B10/27H04B10/272H04J14/00
CPCH04J14/02H04J14/0282H04B10/572H04J14/0305H04B10/2581H04B10/00
Inventor 朴昌洙金兑映白承铉韩承宪
Owner LUXPERT TECH
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