Inside the optical fiber field, optical passive components is an
important part from the fiber optic communication device. This is a type
of optical components, the process principle to adhere to the basic
laws of optics and light theory and electromagnetic theory, the
technical indicators, formula and a variety of testing methods, and it
is closely linked to the fiber optics, integrated optics; electric
passive components are essentially different. Fiber optic cable, which
serve as a link, distribution, isolation, filtering the role. Actually
there are a selection of optical passive devices used: optical splitter,
optical attenuator, optical isolators, connectors(fiber optic SC to ST connectors),
jumpers, optical switches.In Fiberstore,you should buy fiber optic
products on our store with your confidence. All of fiber optics supplies
with high quality but low cost.Today,I dedicated to two popular optical
passive devices,connectors and optical attenuators.
Optical connectors:
An optical fiber connector terminates no more an optical fiber, and
enables quicker connection and disconnection than splicing. The
connectors mechanically couple and align the cores of fibers so light
can pass. Better connectors lose almost no light due to reflection or
misalignment from the fibers.
LC optical connector
do you know? Allow us to to learn more info about connector to enable
you to understanding them.LC fiber optic connector is a small form
factor connector that uses a 1.25 mm ferrule, half how big the SC fiber
optic connector. This can raise the density of fiber optic connector in
fiber optic patch panels. Otherwise, it is a standard ceramic ferrule
connector, easily terminated with any adhesive. Good performance, highly
favored for singlemode. Optical fiber connectors are employed in
telephone company central offices, at installations on customer
premises, as well as in outside plant applications for connecting
equipment and cables, in order to cross-connect cables.
Most optical fiber connectors are spring-loaded, therefore the fiber
faces are pressed together if the connectors are mated. The resulting
glass-to-glass or plastic-to-plastic contact eliminates signal losses
that could be brought on by a cloak gap involving the joined fibers.
Every fiber connection has two values:
Attenuation or insertion loss
Reflection or return loss
Optical attenuators:
An optical attenuator is a device accustomed to decrease the
electricity of the optical signal, in a choice of free space or even in
an optical fiber. The essential types of optical attenuators are fixed,
step-wise variable, and continuously variable.
Variable Optical Attenuator
(VOA) is a vital passive devices, in optical fiber communications to
accomplish real-time charge of the signal, by attenuation from the
transmitted optical power and optical wavelength division multiplexing
device (WDM), spectroscopic detector (TAP the PD), erbium-doped fiber
amplifier (EDFA), optical devices constitute ROADM VMUX, gain-flattened
EDFA modules, could also be used directly inside the optical receiver
overload protection.Furthermore, the measurement of the power meter
instrumentation, calibration, but additionally need to use to VOA.
Inside the Internet,I saw a report it claims that there are two main
types of optical communication component attenuators and these are
variable and stuck. Variable Optical Attenuators (manually controlled
and electronically controlled VOAs) represented 68 percent of the
worldwide consumption (use) value of fiber optic component-type
attenuators found in the chosen optical communication applications in
2008; However, in 2013 VOAs are forecasted to improve to 77 percent of
the relative business.Therefore i think the variable optical attenuator
is much more important.
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