Multi-Channel Multi-Mode Optical Attenuator Attenuation Range
0-35dB
Multi-channel multi-mode optical attenuators work based on a
variety of attenuation mechanisms, including but not limited to:
Light absorption: The optical material inside the attenuator (such
as optical fibers doped with metal ions or special absorbing glass)
absorbs a portion of the incident light, thereby reducing the
intensity of the light signal.
Light scattering: The light is scattered through the microstructure
of the material, thereby reducing the light intensity of linear
propagation.
Light reflection: Usually involves multi-layer thin film technology
that achieves attenuation by reflecting rather than absorbing the
light signal, allowing precise control of reflectivity.
Dislocation technology: The core of the two optical fibers is
misaligned by micro translation, so that the light core loss occurs
in the transmission process, and the attenuation effect is
achieved.
Displacement attenuation: The coupling loss of the optical fiber is
used when the optical fiber is docked, and the transmission path of
the light is changed by lateral or longitudinal displacement of the
optical fiber to achieve attenuation.
Specification
| Models | U8744/U8748(multimode) |
| Attenuation range | 0 ~ 35 dB |
| Calibration wavelength/operating wavelength range (up to 12
wavelength combinations can be selected) |
850/908 nm |
| Insertion loss | ≤ 1.8 dB |
| Fiber type | 50/125um, 62.5/125um self-adaptation |
| Connector type | FC/UPC Connector |
| Attenuation accuracy | ≤±0.20dB (0 ~ 20 dB) |
| Repeatability | ≤±0.05 dB |
| Average power setting time | 2 ~1000 ms |
| Power control follow-up stability time | 200ms |
| Attenuation control speed | 0.1~ 35 dB/s |
| Return loss | ＞25 dB |
| Maximum input power | +17dBm |
| Calibration cycle | 2 years |
| Operating temperature | 0 ~ +40℃ |
| Storage temperature | -30 ~ +80℃ |
| Power supply | 100~240 V |
| Product size | 245mm W, 105mm H, 320mm D |
Multi-channel and multi-mode optical attenuators are widely used in
optical communication system testing, optical fiber device
development and optical communication teaching experiments. To be
specific:
Optical fiber communication system test: It can be used to test the
attenuation characteristics of different optical fiber transmission
paths to ensure the stability and reliability of system
performance. By precisely adjusting the attenuation of optical
signal in each channel, the optical signal transmission under
different transmission conditions can be simulated, which provides
strong support for system optimization.
Optical fiber device development: As an important test tool, it can
be used to evaluate the attenuation performance of the device,
transmission efficiency and other key indicators. Its multi-channel
design allows researchers to test multiple devices simultaneously,
greatly improving research and development efficiency.
Optical communication teaching experiment: provides a platform for
students to deeply understand the principle and technology of
optical communication. Through practical operation and experimental
verification, students can more intuitively understand the
attenuation mechanism of optical signals, regulation principles,
and the composition and working mode of optical fiber communication
systems.
