LC/UPC Fiber optic Attenuator Singlemode Fixed Male to Female, 1~25dB
LC/UPC Fiber optic Attenuator Singlemode Fixed Male to Female, 1~25dB Fiber optic attenuators are devices which reduce (attenuate) the strength of a fiber optic signal within a fiber optic network. Attenuators are usually used when the signal arriving at the receiver is too strong and hence may overpower the receiving elements.
This may occur because of a mismatch between the transmitters/receivers (transceivers, media converters), or because the media converters are designed for a much longer distance than for which they are being used. Sometimes attenuators are also used for stress testing a network link by incrementally reducing the signal strength (increasing the dB attenuation) until the optical link fails, thus determining the signal’s existing safety margin.
A fiber optic attenuator is a passive device used to reduce the amplitude of a light signal without significantly changing the wave form itself. This is often a requirement in Dense Wave Division Multiplexing (DWDM) and Erbium Doped Fiber Amplifier (EDFA) applications where the receiver cannot accept the signal generated from a high-power light source.
If the power is too high as it often is in short single mode systems with laser transmitters, you can reduce receiver power with an attenuator. The power reduction is done by such means as absorption, reflection, diffusion, scattering, deflection, diffraction, and dispersion, etc.
Optical attenuators usually work by absorbing the light, like sunglasses absorb extra light energy. They typically have a working wavelength range in which they absorb all light energy equally. They should not reflect the light or scatter the light in an air gap, since that could cause unwanted back reflection in the fiber system. The attenuating fiber is produced by using a solution doping technique to introduce transition or rare earth elements into the fiber’s core. The dopant reduces the transmission of the fiber.
The degree of attenuation depends upon the material used as the dopant, the dopant level, and the length of the attenuation segment.
Description 
| Optical connector | LC/UPC | Transfer Mode | Singlemode |
|---|---|---|---|
| Return Loss | ≥65dB | Attenuation Accuracy | 1-5dB ±0.5, 6-10dB ±0.7, >10dB ±1.0 |
| Operating Wavelength | 1260~1620nm | Optical Input Power | 200mW |
| Operating Temp Range | -40~75°C | Humidity | 95%RH |
We offers high quality build-out attenuators ranging from 1 to 30dB. Each attenuator is made with continuous light-absorbing and metal-ion doped fiber which offers excellent environmental stability and low back reflection. The front of the attenuator is a male plug connector style that allows the attenuators to be plugged directly into receiver equipment or adaptors in patch panel.
The rear is a female socket adaptor that allows a patch cord to be mated into the back of the attenuator. The attenuator is available in SC, FC, ST, LC, and MU type. In a fiber optic system, build out attenuators play an important role in controlling optical power levels in Telecommunications, CATV applications and other single mode fiber optic communications applications.
As such, they must offer consistent performance over a range of operating conditions so attenuation levels remain constant and predictable.
Features LC/UPC Fiber optic Attenuator Singlemode Fixed Male to Female, 1~25dB
- Compliant with bellcore GR910
- Long term reliability
- Simple manipulation
- High power endurance
- High return loss
- Low PDL
Applications
- EDFA
- Power balancing in DWDM
- CATV
- Power leveling in optical add/drop multiplexing
Specification
| Characteristics | Unit | Conditions | Values |
|---|---|---|---|
| Attenuation | dB | UPC APC | 1 ~ 30 1 ~ 20 |
| Return Loss | dB | UPC APC | ≥50 ≥60 |
| Operating Wavelength | nm | – | 1310 and 1550, 1240 – 1600 |
| Attenuation Accuracy | – | 1 ~ 4dB 5 ~ 30dB | ≤0.5dB ≤10% |
| Operating Temperature | °C | – | -40 ~ +75 |
| Storage Temperature | °C | – | -40 ~ +85 |
| Polarization Dependent Loss | dB | – | ≤0.2 |
| Relative Humidity | % | 75°C | 95 |
| Vibration | dB | 10 ~ 55, 2Hrs | ∆IL≤0.2 |
| Impact | dB | 1.5m, 5 drops | ∆IL≤0.2 |
Highly Efficient, Stable and Durable
- Good interchangeability, repeatability, thermal stability and abrasive resistance;
- High reliability and performance.
- Low insertion loss: average additional loss value lower than 0.2db；
- High return loss: more than 1000 times insertion and extraction.
Excellent Isolating Effect, Eliminating Damage Effectively
- Noise caused by group loop can be effectively restrained.
- Electrically, signal field is entirely isolated from host control terminal,thus accidental damage to the host controller can be highly avoided.
- High Optical Performance, Excellent Mechanical Stability
Advanced grinding machine enables fiber’s center grinding offset. We adopt zirconia ferrule with alkali resistance, acid resistance, high-temperature resistance and ultrahigh-hardness, which possess high optical performance and excellent mechanical stability. wiki
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