Fiber Optic Connectors in FTTD Applications

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Because of major national policy support,
to develop the field of fiber optic products, optical fiber gradual decline in
the price of the cost, fiber optic installation and construction are also
increasingly simple and convenient, plus high-bandwidth optical fiber, a wide
range of applications, from external electromagnetic interference and prevent
signal leakage, etc., fiber optic system solutions increasingly factored by
customers. FTTx is the use of optical fiber as a transmission channel network
physical layer information media, mainly as a network of broadband access. x
represent different scenarios applications generally include the following:

 

1. FTTC (Fiber to The Curb/Cell) is mainly
for residential service, ONU telecommunications equipment installed in the side
of the road junction box, through the coaxial cable extending from ONU
transmission CATV signal, twisted-pair copper networks to transmit voice and
fiber optic splice mode signal.

 

2. FTTB (fiber to the building) service
object has two types, one is an apartment building home users, the other is the
commercial building companies or business units. ONU devices are generally
placed on the bottom into a building (such as the basement), where apartment
buildings may be FTTC ONU extension; while commercial buildings because it is a
company or business office services enterprises, so that the network
transmission performance requirements are higher, network stability and
security requirements more stringent.

 

3. FFTH (Fiber to The Home) optical fiber
directly extended to all home users, all-digital network services, to provide
users with a variety of life and entertainment services, such as a doctor at
home, online shopping, video on demand, remote training.

 

4. FTTD (fiber to the desk) refers to the
fiber completely replace the traditional copper twisted-pair transmission
medium extends directly to the user terminal (such as office computers, printers,
etc.), the user terminal to achieve full network access through fiber, improves
network transmission bandwidth, extending the transmission distance, and
enhance the stability of the network and information security.

 

The main impact of the test fiber system
performance parameters – decay, in addition to the quality of their products
with the relevant cable, the most important is the construction and
installation process.

 

1. Fiber polishing method: through on-site
hand-grinding, with epoxy adhesive curing, the connector assembly steps to
complete the cable connection. Now the basic fiber polishing method should not
be adopted, because this way the construction workers demanding technical
level, and for the present single-mode systems, Gigabit multimode networks,
grinding mode is difficult to achieve, unstable performance.

 

2. Fiber splicing method: it works by fiber
alignment system to align the ends of optical fibers, the use of
high-temperature high-pressure arc discharge tip of the principle and performance
of fiber-optic high temperature melting, so that fiber splicing together to
obtain low loss, low reflection fiber optic fusion splice. Fiber splicing
method most widely used at this stage, the most suitable for application in a
large number of relatively concentrated fiber termination, especially in the
wiring between the application of the cabinet.

 

3. Fiber Optic Splice method (also called
mechanical fiber splice): The whole process does not require cold then hot
welding machine, suitable for relatively small number of core optical fibers,
optical fiber connecting geographically dispersed, especially suitable for the
application in the FTTD.

 

Fast
optical fiber connector is characterized by the
application FTTD

 

Fast fiber optic connectorsis smaller than
the volume of the common connector smaller, more convenient wall and desktop
installation, to ensure the stability of the optical system performance and
reliability. However, if the conventional optical fiber splicing manner, since
the heat-shrinkable sleeve has a length 6 ~ 7mm, the bottom panel 86 of the
cartridge mounting space is not deep enough, it cannot guarantee performance of
the fiber splice and fiber bend radius requirements may result network
communication is unstable.

 

Fast fiber optic connector with fiber
embedded in the factory, without gluing and sanding, simple and convenient.
Process does not require the entire cold then hot melt machine, greatly
reducing the complexity of fiber termination, saving fiber splice time and
improve the efficiency of construction.

 

Fast fiber optic connector with a simple
construction and installation requires only a crimping tool to completer fiber
optic splice, easy to use and short training period; and cold connection
equipment investment cost is small, as FTTD solutions to improve the
cost-effectiveness.

 

Fast fiber optic connector construction
process does not require an active device, suitable for office construction for
harsh environments, especially in pre-construction project, most of them are not
powered site environment or to take power inconvenient places.

 

Fast fiber optic connector can be repeated
production, improve the utilization of fiber head, significant cost savings.

 

Fast fiber optic connector is available in
SC and LC connectors, multi-mode OM2, OM3 and singlemode OS2 Gigabit systems to
choose from.