Cladding Mode Free Photosensitive Single-Mode Fiber0 pages
Cladding Mode Free
nnnnPhotosensitive Single-Mode Fiber
nnnnNufern's Cladding Mode Free (CMF) fiber is designed to allow more uniform grating-writing in WDM applications. CMF
nnnnvirtually eliminates all cladding modes allowing tighter channel spacing for high speed communications. Cladding Mode
nnnnFree fiber is mode-matched to SMF-28TM for telecommunication system use. The polyimide coated CMF fiber is ideally
nnnnsuited for use in a WDM distributed sensing networks operating in high temperature and harsh environments.
nnnnTypical Applications
nnnnCouplers
nnnnC+L Band Gratings
nnnnPolyimide Version: Sensors
nnnnFeatures & Benefits
nnnnExcellent cladding mode suppression — allows for tighter channel spacing
nnnnMode matched to conventional transmission fibers — low splice loss (<0.1 dB typically)
nnnnPolyimide Version: High Temperature coating — enables distributed WDM sensing in harsh environments
nnnnOptical Specifications
nnnnCMF CMF-P
nnnnOperating Wavelength 1450- 1600 nm 1450- 1600 nm
nnnnCoreNA 0.130 0.130
nnnnMode Field Diameter 9.1 ± 0.5 pm @ 1550 nm 9.1 ± 0.5 pm @ 1550 nm
nnnnCutoff 1370±70nm 1370±70nm
nnnnGeometrical & Mechanical
nnnnSpecifications
nnnnCladding Diameter 125.0 ± 1.5 pm 125.0 ± 2.0 pm
nnnnCore Diameter 8.0 pm 8.0 pm
nnnnCoating Diameter 245.0 ±15.0 pim 145.0±5.0pm
nnnnCoating Concentricity < 5.0 pm < 1.5 pm
nnnnCore/Clad Offset < 0.50 pm < 0.50 pm
nnnnCoating Material UV Cured, Dual Acrylate Polyimide
nnnnOperating Temperature Range -55 to 85 °C -65 to 300 °C
nnnnShort Term Bend Radius > 6 mm s 12 mm
nnnnLong Term Bend Radius s 13 mm s 25 mm
nnnnProoftest Level > 200 kpsi (1.4 GN/m2) > 100 kpsi (0.7 GN/m2)
nnnn/tftFERN
nnnnRoHS
nnnn7 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
nnnnproducts are manufactured under an ISO 9001:2008 certified quality management system.
nnnnStandard 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
nnnncoating may be available. Let us know how Nufern can assist with your requirements.
nnnnNU0044- 12/16/2011
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