2DB 3dB 5dB 30dB Fiber Optic Attenuation LC / APC Single Mode Fixed Adjustment
Fiber optic attenuator is a device used to reduce the power level of an optical signal, either in free space or in an optical fiber.
The basic types of optical attenuators are fixed, step-wise variable, and continuously variable.
Fixed optical attenuators used in fiber optic systems may use a variety of principles for their functioning.
Preferred attenuators use either doped fibers, or mis-aligned splices, since both of these are reliable and inexpensive. Inline style attenuators are incorporated into patch cables.
The alternative build out style attenuator is a small male-female adapter that can be added on to other cables.
The fiber optic attenuators can be used on a more permanent basis in order to match the signal with a transmitter and receiver's specific power levels.
Commonly used attenuation range is from 1dB to 30dB.
| Return Loss | UPC >55dB |
| APC >65dB | |
| Attenuation Accuracy | 1 ~ 7 dB ±0.5dB |
| 8 ~ 12 dB ±0.7dB | |
| 13 ~ 17 dB ±1.0dB | |
| 18 ~ 25 dB ±1.3dB | |
| Maximum Optical Input Power | 1000mW |
| Polarization Dependent Loss | ≤0.1dB |
| Operating Temperature Range | -40°C to 75°C |
| Storage Temperature Range | -40°C to 85°C |
| Humidity | 95%RH |
| Attenuation Value | 1dB ~ 30dB |
| Operating Wavelength | 1240~1620nm (Dual 1310/1550nm) |
| Connector | Mode | Type | Appearance | Wavelength | Attenuation Range |
|---|---|---|---|---|---|
| SC | Single mode | UPC | Adapter (female to female) | 1310nm | Adjustable |
| FC | APC | Male to female | 1550nm | Fixed | |
| ST | Multimode | PC | In line (with patch cord) | 1310/1550nm | 1dB |
| LC | ... | 2dB | |||
| MU | ... | ||||
| ... | 30dB |
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