What is Fiber Optic Adapter

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Fiber
optic adapters (also known as Fiber couplers,
Fiber Adapter ) are designed to connect two optical cables together. They have
a single fiber connector (simplex), dual fiber connector (duplex) or sometimes
four fiber connector (quad) versions. The optical fiber adapter can be inserted
into different types of optical connectors at both ends of the optical fiber
adapter to realize the conversion between different interfaces such as FC, SC,
ST, LC, MTRJ, MPO and E2000, and is widely used in optical fiber distribution
frames (ODFs) Instruments, providing superior, stable and reliable performance.

 

Features of Fiber Optic Adapter

The optical fibers are connected by an
adapter through its internal open bushing to ensure the maximum connection
between the optical connectors. In order to be fixed in a variety of panels,
the industry also designed a variety of finely fixed flange.

 

Transformable optical adapters are
available with fiber optic connectors of different interface types on both ends
and provide a connection between APC faceplates. Duplex or multi-adapter adapts
to increase installation density and save space.

 

Fiber Optic Adapter types

FC Fiber Optic Adapter

This fiber optic adapter was first
developed by Japan NTT. FC is an acronym for FERRULE CONNECTOR, indicating that
its external reinforcement is the use of the metal sleeve, fastening the way
for the buckle. The earliest, FC type connector, the docking end of the ceramic
pin. Such connectors are simple in structure, easy to operate and easy to manufacture.
However, the fiber end face is more sensitive to dust, and it is easy to
produce Fresnel reflection and it is difficult to improve the return loss
performance. Later, this type of connector has been improved, the use of
docking the spherical end of the pin (PC), while the external structure has not
changed, making the insertion loss and return loss performance has been greatly
improved.

 

SC Fiber Optic Adapter

This is a kind of optical fiber connector
developed by Japan NTT Corporation. The shell is rectangular, the pin and the
coupling sleeve used in the structure of the same size and FC type. One end of
the pin to use more PC or APC grinding method; the casting method is the use of
plug pin type, without rotation. Such connectors are inexpensive, easy to plug
and unplug, low insertion loss variations, high compressive strength, and high
installation density.

 

DIN47256 Fiber Optic Adapter

This is a connector developed by Germany.
The pins and coupling sleeves used in this connector are the same size as the
FC type and the PC process is used for the end face processing. Compared with
the FC type connector, the structure is more complex, and the internal metal
structure has a control pressure spring to prevent the end face from being
damaged due to the excessive insertion pressure. In addition, this connector
has higher mechanical accuracy and therefore smaller insertion loss values.

 

MT-RJ Fiber Optic Adapter

MT-RJ started with the MT connector
developed by NTT with the same latching mechanism as the RJ-45 type LAN
electrical connector. Alignment of the optical fiber with guide pins mounted on
both sides of the small bushing made it easy to communicate with the optical
transceiver Machine connected to the connector end of the optical fiber for the
dual-core (0.75MM spacing) array design is mainly used for data transmission
next generation high-density fiber optic connectors.

 

LC Fiber Optic Adapter

The lc-type connector is a well-known BELL
(Bell) Institute of research and development, the use of convenient modular
jack (RJ) latch mechanism made. The pins and sleeves used are half the sizes
used for normal SC, FC, etc., at 1.25mm. This will increase the density of
fiber optic connectors in fiber distribution frames. Currently, in the
single-mode SFF, LC type of connector has actually occupied the dominant
position, the application of multi-mode is also growing rapidly.

 

MU Fiber Optic Adapter

The MINIATURE UNIT COUPLING connector is
the world’s smallest single-core fiber optic connector developed by NTT based
on the currently used SC-type connector. The connector uses a 1.25MM diameter
sleeve and self-holding mechanism, the advantage is that it can achieve
high-density installation. NTT has developed the MU connector family with MU’s
L.25MM diameter bushings. They have socket type connectors for optical cable
connections; backplane connectors with the self-holding mechanism and
simplified sockets for connecting LD / PD modules and plugs Wait. Demand for
MU-type connectors will also grow rapidly as fiber-optic networks become more
capable of larger bandwidths and DWDM technologies are widely used.

 

MTP/MPO Fiber Optic Adapters

 

Unlike the single-core SC fiber optic
adapters, the SC fiber optic adapters are internally equipped with a ceramic
ferrule that is precisely aligned through the ferrule when the SC connector
ferrule is connected, while the MPO / MTP adapter is connected using an MPO /
MTP Precise connection of two guide holes with a diameter of 0.7mm and a guide
pin on the left and right ends of the ferrule. MPO / MTP adapters are widely
used in communication system base stations, optical fiber distribution frames
(ODFs) in building rooms, MPO / MTP cassette module, and various test
instruments.