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- Solving the FTTH Rollout Problem in Multiple Dwelling Units
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- A Simple Overview of Optical Power Meter
- ODN is based on PON FTTH Optical Cable Network of the Device
- Using an OTDR to be an Expert in Fiber Link Testing
- How FTTH Broadband Works?
- Connections among Fiber Terminal Boxes & Patch Cables & Pigtails
- Easy to Install a Fiber Terminal Box
- What is Arrayed Waveguide Grating?
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FTTH Knowledge
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Embodiment Method of FTTH
Here, we just simply introduce four embodiment method of FTTH, including Home Run method, APON Method, TDM-PON and WDM-PON.
Embodiment Method of FTTH
1)Home Run (Point to Point) Method
2)AON Method
AON Method is the one to post a Remote Note (RN) that accepted a active component to carry out Ethernet switching function on a proper position within subscribers area, let us say, Cabinet, Shelter, Controlled Environment Vault (CEV) or Electric Pole, from which connect to the each subscriber through optical fiber. At this time the connecting section from the CO to the RN is connected through a single optical fiber.
AON Method
3) TDM-PON Method
TDM-PON Method can be divided by ATM-PON, Ethernet-PON, G-PON etc, and is the method to select and receive a signal only transmitted to him/her from the ONT (Optical Network Terminal), once the CO(Central Office) broadcast a signal to all subscribers, meanwhile the signal to be sent from the subscriber to the CO is to use respective protocol then time-division multiplexing access.
TDM-PON Method
4) WDM-PON
WDM-PON (Wavelength Division Multiplexing-Passive Optical Network) is an innovative concept for access and backhaul networks. It uses multiple different wavelengths (WDM) over a physical point-to-multipoint fiber infrastructure that contains no active components (PON). The use of different wavelengths allows for traffic separation within the same physical fiber. The result is a network that provides logical point-to-point connections over a physical point-to-multipoint network topology. WDM-PON allows operators to deliver high bandwidth to multiple endpoints over long distances.
Features of FTTH by Composition Method
|
Section |
Primary Features |
Advantage $Disadvantage |
|
Home Run |
Install optical fiber individually up to the residence by PTP (point to point). Exhaustion rate of optical backbone line and wiring network are high Bandwidth guaranteed and favorable security owing to optical cable supply by each subscriber. Advantageous maintenance since there is no place to install outdoor |
Advantage: Maintenance/bandwidth guaranteed/favorable security Disadvantage: Network setting expense increase as optical cable consumption rate is a lotInvestment increase against optical power splitter connection box object, optical cable, conduit etc. |
|
AON |
Power supply: Power supply to Ethernet switch is needed
Supply bandwidth: 100Mbps when 1Gbps shares with 10 subscribers |
Advantage: Relatively cheap equipment price by use of Ethernet switch already supplied in bulk |
|
TDM-PON |
Technology method: ATM-PON/G-PON/E-PON
Power supply: Power supply is no need because of passive component application Operational maintenance: Relatively favorable maintenance since active component is not existing |
Advantage: Because of passive component application, power supply is no need then subsequently favorable operational maintenance. TDM (voice) support is possible from E-PON MAC etc. Disadvantage: Cryptographic technology considering a security is required since fiber is sharedSeparate function for RF broadcasting service is required. Installation cost increase if there are few subscribers. |
|
WDM-PON |
Power supply: Power supply is not necessary owing to passive component application. Supply bandwidth: Separate wavelength application per subscriber. Operational maintenance: Relatively favorable maintenance since active component is not existing |
Advantage: Communication security guaranteed between the subscribers by PTP communication. Easy expansion of communication capacity is possible to accept. Disadvantage: Number of subscribers is determined depending on the figure of the splitter wavelength. Difficulty in both 1st stage, 2nd stage splitter reception according to subscribers’ distribution range and broadcasting service reception like RF video. |
Related Knowledge:
A brief history of Fiber in the Loop
The Benefits of Fiber to the Home Broadband Connections