20/400 NuMATCH LMA Double Clad Fibers0 pages

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Typical Applications

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High power fiber lasers

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CW and pulsed amplifiers

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Military, industrial and medical

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20/400

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Precision Matched

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Passive LMA Double Clad Fibers

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Nufern's Large Mode Area (LMA) and Polarization Maintaining LMA (PLMA) passive double clad fiber are ideal for high

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power fiber lasers and amplifiers used in military, industrial, and medical applications. These fibers feature a 20 micron

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diameter core and 400 micron diameter clad size with a low NA (0.065) core. They are precision matched to their active

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Yb-doped 20/400 LMA and PLMA matched counterparts to ensure excellent splice compatability and low loss. As with all

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Nufern standard Large Mode Area (LMA) fibers, these fibers are proof-tested to 100 kpsi, an industry requirement for long

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term reliability. They utilize the latest fiber design and NuCOAT™ coating technology to ensure excellent preservation of

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beam quality and extended operating life at the high power levels demanded by today's industrial fiber laser applications.

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These precision matched fibers are available in both non-PM and PANDA-style PM fibers.

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-s

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Features & Benefits

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NuCOAT™ fluoroacrylate coating — Greater fiber durability in extreme environmental operating & storage conditions

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LMA core design — Useful for transmitting high CW powers

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"Few" moded core design — Easy to maintain single mode LP01 beam through fiber & components

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PANDA-style stress structure for increased birefringence — Superior optical performance and uniformity

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All fiber proof tested to > 100 kpsi — Critical for ensuring long term reliability when coiling

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Optical Specifications PLMA-GDF-20/400-M LMA-GDF-20/400-M

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Operating Wavelength (nominal) 1060 nm 1060 nm

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CoreNA 0.065 ±0.005 0.065 ±0.005

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First Cladding NA (5%) > 0.46 s 0.46

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Core Attenuation < 50.0 dB/km @ 1300 nm < 30.0 dB/km @ 1300 nm

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< 25.0 dB/km @ 1200 nm á 15.0 dB/km @ 1200 nm

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Cladding Attenuation < 15.0 dB/km @ 1095 nm < 15.0 dB/km @ 1095 nm

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Birefringence nominal 4 x 10"4 N/A

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Geometrical & Mechanical

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Specifications

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Cladding Diameter 395.0 ± 10.0 pm 395.0 ± 5.0 pm

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Core Diameter 20.0 ± 1.5 pm 20.0± 1.5 pm

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Coating Diameter 550.0 ±15.0 pim 550.0 ± 15.0 pim

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Core/Clad Offset < 2.00 pm < 2.00 pm

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Clad Non-Circularity N/A < 0.50 %

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Prooftest Level > 100 kpsi (0.7 GN/m2) > 100 kpsi (0.7 GN/m2)

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These precision matched fibers are included in our precision matched sets - see PLMA-YDF-20/400-M and LMA-YDF-20/400-M

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nUFERN

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7 Airport Park Road, East Granby, CT 06026 • 860.408.5000 • Toll-free 866.466.0214 • Fax 860.844.0210 E-mail info @ nufern.com • www.nufern.com Nufern

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products are manufactured under an ISO 9001:2008 certified quality management system.

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Standard specifications and design parameters are listed above. Specifications are subject to change without notice. Other configurations such as alternative form factors, optimized cut-off and UV cured color

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coating may be available. Let us know how Nufern can assist with your requirements.

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NU0154- 01/19/2012

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RoHS

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