Fiber Optic Attenuators

Fiber optic attenuators are passive devices used to reduce the power level of an optical signal. They are available in fixed and variable types, and come with connectors like FC/PC or LC/APC for easy integration.

Product	Wavelength Range	Maximum Optical Power	Fiber Type	Availability	Price (USD)
Variable Fiber Optic Attenuator	850 nm 830 - 870 nm	300 mW	SM800	In stock	$ 411.03
Product Code Wavelength Range 850 nm 830 - 870 nm Maximum Optical Power 300 mW Fiber Type SM800 Insertion Loss < 1.8 dB Return Loss > 40 dB Attenuation 1.8 - 50 dB Fiber Connector Type FC/PC Key Features Narrowband, Variable Attenuation Transmission 0.001 - 66.1% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	1310 nm, 1480 nm, 1550 nm	-	SM Fiber	Contact Supplier	Add to cart to request quote
Product Code Wavelength Range 1310 nm, 1480 nm, 1550 nm Fiber Type SM Fiber Return Loss > 50 dB Attenuation 20 dB Fiber Connector Type FC/APC Key Features Variable Attenuation Core Diameter 8 μm Supplier Location Germany See product details More from ID Photonics
Variable Fiber Optic Attenuator	1064 nm (±20 nm)	300 mW	SM980PS-U25A	Contact Supplier	$ 774.53
Product Code Wavelength Range 1064 nm (±20 nm) Maximum Optical Power 300 mW Fiber Type SM980PS-U25A Insertion Loss < 1.3 dB Return Loss > 45 dB Attenuation 1.3 - 50 dB Fiber Connector Type FC/APC Key Features Polarization Maintaining Variable Attenuation Transmission 0.001 - 74.1% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Fiber Cable Length 1 m Extinction Ratio > 18 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	1550 nm	2 W	-	6 - 12 weeks	$ 435.00
Product Code Wavelength Range 1550 nm Maximum Optical Power 2 W Return Loss 60 dB Attenuation 80 dB (Maximum) Fiber Connector Type FC/APC Key Features Variable Attenuation Core Diameter 8 μm Cladding Diameter 125 μm Center Wavelength 1550 nm Weight 100 g Attenuator Configuration Mini pigtail, 5-mm thk housing Supplier Location California, USA See product details More from OptoSigma
Variable Fiber Optic Attenuator	1064 nm 1044 - 1084 nm	300 mW	HI1060	In stock	$ 343.31
Product Code Wavelength Range 1064 nm 1044 - 1084 nm Maximum Optical Power 300 mW Fiber Type HI1060 Insertion Loss < 1.3 dB Return Loss > 40 dB Attenuation 1.3 - 50 dB Fiber Connector Type FC/PC Key Features Narrowband, Variable Attenuation Transmission 0.001 - 74.1% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	1550 nm	2 W	-	In stock	$ 435.00
Product Code Wavelength Range 1550 nm Maximum Optical Power 2 W Return Loss 60 dB Attenuation 80 dB (Maximum) Fiber Connector Type FC/APC Key Features Variable Attenuation Core Diameter 8 μm Cladding Diameter 125 μm Center Wavelength 1550 nm Weight 100 g Attenuator Configuration Pigtail, 16-mm SQ housing Supplier Location California, USA See product details More from OptoSigma
Variable Fiber Optic Attenuator	780 nm (±20 nm)	300 mW	SM85-PS-U25A	In stock	$ 881.44
Product Code Wavelength Range 780 nm (±20 nm) Maximum Optical Power 300 mW Fiber Type SM85-PS-U25A Insertion Loss < 2.1 dB Return Loss > 40 dB Attenuation 2.1 - 50 dB Fiber Connector Type FC/APC Key Features Polarization Maintaining Variable Attenuation Transmission 0.001 - 61.7% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Fiber Cable Length 1 m Extinction Ratio > 16 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	850 nm 830 - 870 nm	300 mW	SM800	Contact Supplier	$ 435.97
Product Code Wavelength Range 850 nm 830 - 870 nm Maximum Optical Power 300 mW Fiber Type SM800 Insertion Loss < 1.8 dB Return Loss > 40 dB Attenuation 1.8 - 50 dB Fiber Connector Type FC/APC Key Features Narrowband, Variable Attenuation Transmission 0.001 - 66.1% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	1300 - 1550 nm	2 W	-	6 - 12 weeks	$ 3073.00
Product Code Wavelength Range 1300 - 1550 nm Maximum Optical Power 2 W Return Loss 50 dB Attenuation 60 dB (Maximum) Fiber Connector Type FC/UPC Key Features Variable Attenuation Core Diameter 9 μm Cladding Diameter 125 μm Center Wavelength 1300 - 1550 nm Weight 100 g Attenuator Configuration Electronic Supplier Location California, USA See product details More from OptoSigma
Variable Fiber Optic Attenuator	1550 nm	2 W	-	In stock	$ 435.00
Product Code Wavelength Range 1550 nm Maximum Optical Power 2 W Return Loss 60 dB Attenuation 80 dB (Maximum) Fiber Connector Type FC/APC Key Features Variable Attenuation Core Diameter 8 μm Cladding Diameter 125 μm Center Wavelength 1550 nm Weight 100 g Attenuator Configuration Pigtail, 24-mm dia. housing Supplier Location California, USA See product details More from OptoSigma
Variable Fiber Optic Attenuator	1310 nm (±20 nm) 1550 nm (±20 nm)	300 mW	SMF-28e	2 weeks	$ 313.61
Product Code Wavelength Range 1310 nm (±20 nm) 1550 nm (±20 nm) Maximum Optical Power 300 mW Fiber Type SMF-28e Insertion Loss < 1.5 dB Return Loss > 55 dB Attenuation 1.5 - 50 dB Fiber Connector Type FC/PC Key Features Variable Attenuation Transmission 0.001 - 70.8% Attenuation Resolution 0.1 dB Dimensions 38 x 30 x 19 mm Operating Temperature 0 - 60 °C Polarization-Dependent Loss < 0.2 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	1064 nm 1044 - 1084 nm	300 mW	HI1060	In stock	$ 369.44
Product Code Wavelength Range 1064 nm 1044 - 1084 nm Maximum Optical Power 300 mW Fiber Type HI1060 Insertion Loss < 1.3 dB Return Loss > 40 dB Attenuation 1.3 - 50 dB Fiber Connector Type FC/APC Key Features Narrowband, Variable Attenuation Transmission 0.001 - 74.1% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	780 nm 760 - 800 nm	300 mW	HI780	In stock	$ 411.03
Product Code Wavelength Range 780 nm 760 - 800 nm Maximum Optical Power 300 mW Fiber Type HI780 Insertion Loss < 2.1 dB Return Loss > 40 dB Attenuation 2.1 - 50 dB Fiber Connector Type FC/PC Key Features Narrowband, Variable Attenuation Transmission 0.001 - 61.7% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	630 nm 620 - 650 nm	300 mW	SM600	In stock	$ 494.17
Product Code Wavelength Range 630 nm 620 - 650 nm Maximum Optical Power 300 mW Fiber Type SM600 Insertion Loss < 3 dB Return Loss > 40 dB Attenuation 3 - 50 dB Fiber Connector Type FC/PC Key Features Narrowband, Variable Attenuation Transmission 0.001 - 50.1% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	780 nm (±20 nm)	300 mW	SM85-PS-U25A	In stock	$ 857.68
Product Code Wavelength Range 780 nm (±20 nm) Maximum Optical Power 300 mW Fiber Type SM85-PS-U25A Insertion Loss < 2.1 dB Return Loss > 40 dB Attenuation 2.1 - 50 dB Fiber Connector Type FC/PC Key Features Polarization Maintaining Variable Attenuation Transmission 0.001 - 61.7% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Fiber Cable Length 1 m Extinction Ratio > 16 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	1550 nm	2 W	-	In stock	$ 435.00
Product Code Wavelength Range 1550 nm Maximum Optical Power 2 W Return Loss 60 dB Attenuation 80 dB (Maximum) Fiber Connector Type FC/APC Key Features Variable Attenuation Core Diameter 8 μm Cladding Diameter 125 μm Center Wavelength 1550 nm Weight 100 g Attenuator Configuration Pigtail, 12-mm dia. housing Supplier Location California, USA See product details More from OptoSigma
Variable Fiber Optic Attenuator	1300 - 1550 nm	2 W	-	In stock	$ 3104.00
Product Code Wavelength Range 1300 - 1550 nm Maximum Optical Power 2 W Return Loss 60 dB Attenuation 60 dB (Maximum) Fiber Connector Type FC/APC Key Features Variable Attenuation Core Diameter 9 μm Cladding Diameter 125 μm Center Wavelength 1300 - 1550 nm Weight 100 g Attenuator Configuration Electronic Supplier Location California, USA See product details More from OptoSigma
Variable Fiber Optic Attenuator	1064 nm (±20 nm)	300 mW	SM980PS-U25A	In stock	$ 749.58
Product Code Wavelength Range 1064 nm (±20 nm) Maximum Optical Power 300 mW Fiber Type SM980PS-U25A Insertion Loss < 1.3 dB Return Loss > 45 dB Attenuation 1.3 - 50 dB Fiber Connector Type FC/PC Key Features Polarization Maintaining Variable Attenuation Transmission 0.001 - 74.1% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Fiber Cable Length 1 m Extinction Ratio > 18 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	780 nm 760 - 800 nm	300 mW	HI780	In stock	$ 435.97
Product Code Wavelength Range 780 nm 760 - 800 nm Maximum Optical Power 300 mW Fiber Type HI780 Insertion Loss < 2.1 dB Return Loss > 40 dB Attenuation 2.1 - 50 dB Fiber Connector Type FC/APC Key Features Narrowband, Variable Attenuation Transmission 0.001 - 61.7% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	1310 nm (±40 nm) 1550 nm (±40 nm)	300 mW	SM13-PS-U25D	In stock	$ 751.95
Product Code Wavelength Range 1310 nm (±40 nm) 1550 nm (±40 nm) Maximum Optical Power 300 mW Fiber Type SM13-PS-U25D Insertion Loss < 0.9 dB Return Loss 50 dB Attenuation 0.9 - 50 dB Fiber Connector Type FC/APC Key Features Polarization Maintaining Variable Attenuation Transmission 0.001 - 81.3% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature -5 to 70 °C Applications Telecom Fiber Cable Length 1 m Extinction Ratio > 18 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	630 nm 620 - 650 nm	300 mW	SM600	In stock	$ 517.94
Product Code Wavelength Range 630 nm 620 - 650 nm Maximum Optical Power 300 mW Fiber Type SM600 Insertion Loss < 3 dB Return Loss > 40 dB Attenuation 3 - 50 dB Fiber Connector Type FC/APC Key Features Narrowband, Variable Attenuation Transmission 0.001 - 50.1% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	980 nm 960 - 1000 nm	300 mW	HI1060	In stock	$ 369.44
Product Code Wavelength Range 980 nm 960 - 1000 nm Maximum Optical Power 300 mW Fiber Type HI1060 Insertion Loss < 1.5 dB Return Loss > 40 dB Attenuation 1.5 - 50 dB Fiber Connector Type FC/APC Key Features Narrowband, Variable Attenuation Transmission 0.001 - 70.8% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	1310 nm (±20 nm) 1550 nm (±20 nm)	300 mW	SMF-28e	In stock	$ 338.56
Product Code Wavelength Range 1310 nm (±20 nm) 1550 nm (±20 nm) Maximum Optical Power 300 mW Fiber Type SMF-28e Insertion Loss < 1.5 dB Return Loss > 55 dB Attenuation 1.5 - 50 dB Fiber Connector Type FC/APC Key Features Variable Attenuation Transmission 0.001 - 70.8% Attenuation Resolution 0.1 dB Dimensions 38 x 30 x 19 mm Operating Temperature 0 - 60 °C Polarization-Dependent Loss < 0.2 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	1310 nm (±20 nm) 1550 nm (±20 nm)	300 mW	SMF-28e	In stock	$ 287.49
Product Code Wavelength Range 1310 nm (±20 nm) 1550 nm (±20 nm) Maximum Optical Power 300 mW Fiber Type SMF-28e Insertion Loss < 1.5 dB Return Loss > 55 dB Attenuation 1.5 - 50 dB Fiber Connector Type No Connectors Key Features Variable Attenuation Transmission 0.001 - 70.8% Attenuation Resolution 0.1 dB Dimensions 38 x 30 x 19 mm Operating Temperature 0 - 60 °C Polarization-Dependent Loss < 0.2 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	630 nm (±20 nm)	300 mW	SM63-PS-U25A	In stock	$ 937.27
Product Code Wavelength Range 630 nm (±20 nm) Maximum Optical Power 300 mW Fiber Type SM63-PS-U25A Insertion Loss < 3 dB Return Loss > 40 dB Attenuation 3 - 50 dB Fiber Connector Type FC/PC Key Features Polarization Maintaining Variable Attenuation Transmission 0.001 - 50.1% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Fiber Cable Length 1 m Extinction Ratio > 16 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	630 nm (±20 nm)	300 mW	SM63-PS-U25A	In stock	$ 961.04
Product Code Wavelength Range 630 nm (±20 nm) Maximum Optical Power 300 mW Fiber Type SM63-PS-U25A Insertion Loss < 3 dB Return Loss > 40 dB Attenuation 3 - 50 dB Fiber Connector Type FC/APC Key Features Polarization Maintaining Variable Attenuation Transmission 0.001 - 50.1% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Fiber Cable Length 1 m Extinction Ratio > 16 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	1310 nm (±40 nm) 1550 nm (±40 nm)	300 mW	SM13-PS-U25D	In stock	$ 727.02
Product Code Wavelength Range 1310 nm (±40 nm) 1550 nm (±40 nm) Maximum Optical Power 300 mW Fiber Type SM13-PS-U25D Insertion Loss < 0.9 dB Return Loss 50 dB Attenuation 0.9 - 50 dB Fiber Connector Type FC/PC Key Features Polarization Maintaining Variable Attenuation Transmission 0.001 - 81.3% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature -5 to 70 °C Applications Telecom Fiber Cable Length 1 m Extinction Ratio > 18 dB Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs
Variable Fiber Optic Attenuator	980 nm 960 - 1000 nm	300 mW	HI1060	In stock	$ 343.31
Product Code Wavelength Range 980 nm 960 - 1000 nm Maximum Optical Power 300 mW Fiber Type HI1060 Insertion Loss < 1.5 dB Return Loss > 40 dB Attenuation 1.5 - 50 dB Fiber Connector Type FC/PC Key Features Narrowband, Variable Attenuation Transmission 0.001 - 70.8% Attenuation Resolution 0.15 dB Dimensions 26 x 18 x 8 mm Operating Temperature 0 - 70 °C Storage Temperature -40 to 85 °C Supplier Location New Jersey, USA See product details More from Thorlabs