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LC/UPC Singlemode Fixed Flanged Fiber Optic Attenuator, Female to Female, 1~25dB
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LC/UPC Singlemode Fixed Flanged Fiber Optic Attenuator, Female to Female, 1~25dB

#11819

Our single-mode fixed fiber optic attenuators offer low reflection, high mode stability and a variety of attenuation values.

FS P/N: AT-F-LCU
:
Price:
US$  1.20
Availability: Available,  Orders placed today will ship within 10 business days
The actual shipping time may vary with the estimated time, it depends on handling time, destination zip code, shipping service selected and receipt of cleared payment.
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Item Details
Fiber ConnectorLC/UPCConnector GenderFixed Female to Female
Transfer ModeSinglemodeAttenuation 1~25dB
Operating Wavelength(nm)1260~1620(SM)Attenuation Accuracy1-9dB ±0.5, 10-25dB ±10%
Return loss≥55dBMax Optical Input Power200mW
Operating Temp Range-40~75°CPolarization Dependent Loss≤ 0.2dB
Storage Temp Range-40~80°CHumidity95%RH
Features & Benefits

Fully compatible with LC fiber optic connectorsPrecise attenuation valuesIndustry standard attenuation levelsLow PDL and insertion lossPrecision polishing for reduced back reflectionHighly Reliable Physical Contact ConnectorsCompartmentalized case provides safe component storage and simple organizationSmall, durable case for easy portabilityRoHS compliant
Package
Package Description: Designing suitable packaging according to the shape of products, we can provide perfect collocation of high quality products and delicate packaging for you. Contact us at sales@fs.com for customizing your attenuators package.
Why Use Attenuators?
The ability of any fiber optic system to transmit data ultimately depends on the optical power at the receiver as shown below, which shows the data link bit error rate as a function of optical power at the receiver. (BER is the inverse of signal-to-noise ratio, e.g. high BER means poor signal to noise ratio.) Either too little or too much power will cause high bit error rates.

Too much power, and the receiver amplifier saturates, too little and noise becomes a problem as it interferes with the signal. Fiber optic attenuators are mainly used for adjusting the Optical Power to a desired level. Attenuators are available in models with variable attenuation or with fixed values from a few dB to 20 dB or more.
Does Multimode or Singlemode Systems need attenuators?
Generally, multimode systems do not need attenuators, because multimode sources rarely have enough power output to saturate receivers. Singlemode systems, especially short links, often have too much power and need attenuators.

For a singlemode applications, the most important specification, after the correct loss value, is return loss or reflectance! Choose a type of attenuator with good reflectance specifications and always install the attenuator ( X in the drawing) as shown at the receiver end of the link. This is because it's more convenient to test the receiver power before and after attenuation or while adjusting it with your power meter at the receiver, plus any reflectance will be attenuated on its path back to the source.
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