What is a pigtail
Pigtail known as a pigtail line, only has one end of the connector, while the other end is the
core of the breakage of a fiber optic cable, welding and other fiber optic cable core is
connected, often appear in the fiber optic terminal box, used to connect fiber optic cable and
fiber optic transceiversdevice (also used between the coupler, patch cords, etc.).
Pigtail contains SM and MM.
Multimode pigtail is orange, a wavelength of 850nm, the transmission distance of 500m, for the
short-range connectivity.
Single-mode pigtail is yellow, there are two wavelengths, 1310nm and 1550nm, transmission distance
of 10km and 40km respectively.
ITU-T (ITU-T for the ITU Telecommunication Standardization Sector), the specification of the three
commonly used fiber: G.652 specification fiber ,G.653 specification fiber, compliant G.655 fiber.
Optical attenuator as an optical passive devices
for debugging which used for optical power in optical communication
system performance, debugging fiber-optic instrument calibration
correction, optical fiber signal attenuation. The use of the product is
mixed metal ion attenuation of optical fiber, and can the optical
adjust power to the level required.
Optical attenuator uses:
Optical
fiber communication systems, fiber optic CATV ,measurement of
high-power optical devices used for the attenuation of the input optical
power, avoiding the distortion due to the super leaving the optical
receiver input optical power.
Optical attenuator Category:
According to the type of port can be divided into several categories as follows:
SC fiber optic attenuator: applied to the SC
fiber interface with RJ-45 connector, it looks very similar, but the SC
interface seems to be more flat some obvious difference between the
inside of contacts, if it is 8 thin copper contacts, RJ-45 connector, if
it is a Copper Cylinder SC fiber interface.
LC fiber optic
attenuator: applied to LC optical interface connected to the SFP module
connector, it uses easy to operate modular jack (RJ) latch mechanism
made. (Commonly used in routers)
FC fiber optic attenuator: applied
to FC fiber interface, external strengthen the way the use of metal
fastening method for the turnbuckle. Generally used in the ODF side up
(patch panel)
ST fiber attenuation: Application to ST fiber
interface, commonly used in fiber optic patch panels, shell round in
shape, fastening methods for the turnbuckle. (For 10Base-F connections,
the connectors are usually ST type commonly used in fiber optic patch
panel)
