Cladding Mode Free Photosensitive Single-Mode Fiber0 pages

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Cladding Mode Free

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Photosensitive Single-Mode Fiber

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Nufern's Cladding Mode Free (CMF) fiber is designed to allow more uniform grating-writing in WDM applications. CMF

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virtually eliminates all cladding modes allowing tighter channel spacing for high speed communications. Cladding Mode

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Free fiber is mode-matched to SMF-28TM for telecommunication system use. The polyimide coated CMF fiber is ideally

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suited for use in a WDM distributed sensing networks operating in high temperature and harsh environments.

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Typical Applications

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Couplers

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C+L Band Gratings

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Polyimide Version: Sensors

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Features & Benefits

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Excellent cladding mode suppression — allows for tighter channel spacing

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Mode matched to conventional transmission fibers — low splice loss (<0.1 dB typically)

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Polyimide Version: High Temperature coating — enables distributed WDM sensing in harsh environments

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Optical Specifications

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CMF CMF-P

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Operating Wavelength 1450- 1600 nm 1450- 1600 nm

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CoreNA 0.130 0.130

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Mode Field Diameter 9.1 ± 0.5 pm @ 1550 nm 9.1 ± 0.5 pm @ 1550 nm

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Cutoff 1370±70nm 1370±70nm

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Geometrical & Mechanical

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Specifications

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Cladding Diameter 125.0 ± 1.5 pm 125.0 ± 2.0 pm

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Core Diameter 8.0 pm 8.0 pm

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Coating Diameter 245.0 ±15.0 pim 145.0±5.0pm

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Coating Concentricity < 5.0 pm < 1.5 pm

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Core/Clad Offset < 0.50 pm < 0.50 pm

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Coating Material UV Cured, Dual Acrylate Polyimide

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Operating Temperature Range -55 to 85 °C -65 to 300 °C

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Short Term Bend Radius > 6 mm s 12 mm

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Long Term Bend Radius s 13 mm s 25 mm

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Prooftest Level > 200 kpsi (1.4 GN/m2) > 100 kpsi (0.7 GN/m2)

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/tftFERN

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RoHS

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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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NU0044- 12/16/2011

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