FA-OA-SAFSAM, High Accuracy SC/APC Male To SC/APC Female Fiber
Optical Attenuator 1~30dB
Generally speaking, fiber optical communication products with
ferrule, such as optical fiber patch cords, optical fiber
connectors, fiber optic adapters, optical fiber attenuators and so
on, usually need to grind and polish the end face of the ferrule to
obtain PC, UPC, APC end faces. What is the difference between the
three types of end faces? What are their strengths and weaknesses?
"PC" is the most widely used in equipment of telecom operators. Its
end face is flat. It is able to meet general requirement of return
loss.
"UPC" is with smaller attenuation than "PC". It is generally used
in equipment with special needs of return loss. For example, SC/UPC
fiber patch cord is used with ODF, fiber patch panel, fiber
terminal box and so on, mainly to improve the optical performance.
“APC” is widely used in radio and television and early CATV. The
ferrule adopts an inclined end surface, which can improve the
quality of TV signal. The main reason is that the TV signal is
analog optical modulation. When the coupling surface of the joint
is vertical, the reflected light returns along the original path.
Because the non-uniform refractive index distribution of optical
fibers will return to the coupling surface again, at this time,
although the energy is very small, but the analog signal can not
completely eliminate the noise, so it is equivalent to
superimposing a weak signal with time delay on the original clear
signal, which is shown in the picture as double image. The angle or
slope of the fiber connector prevents the reflected light from
returning along the original path. Generally, this problem does not
exist in digital signals. APC end face are still widely used in
today's radio and television communication and other occasions
where there are higher requirements for return loss.
Availability of Fiberall Optical Attenuator:
Female to Female ( same interface at two ends)
Female to Male ( same interface at two ends)
Male to Female ( hybrid/conversion type, different interface at two
ends)
Connector Type: SC-SC, LC-LC, ST-ST, FC-FC, MU-MU, SC-LC, SC-FC,
SC-ST, LC-FC, LC-ST, ST-FC
Attenuation Value Options: 0~30dB
Available Wavelengths:
SM: 1200~1600nm or 1310nm, 1550nm
MM: 850nm, 1300nm
Attenuation Accuracy: +/-0.5 (1 to 10dB), +/-1.0 (11 to 30dB)
Polarization Dependent Loss: ≤0.2dB
Vibration: ≤0.1 dB change between 10Hz to 55Hz
Drop Test: +/-0.2dB after 8 drops (3 axes) from 1.8 meters onto a
hard surface
Humidity Range: +/- 0.2 dB change in 10% to 90% relative
Operating Temperature Range: -40 ~ 80˚C
