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TECS Hard-Clad Fiber
TECS Hard-Clad Fiber Specifications
Core Diameter µm 200 ± 5 300 ± 6
Clad Diameter µm 225 ± 5 325 ± 10
Buffer Diameter1 µm 500 ± 30 650 ± 30
Bandwidth @ 820nm MHz-km 20 15
Maximum Core Offset µm 5 5
Acceptance Angle (Full)
– TECS 39 46˚46˚
– TECS 48 57˚—
Maximum Power Capability
– CW2 kW 0.2 0.5
– Pulsed3 MW 1.0 2.3
Operating Temperature @ 820nm ˚C -65 to +125 -65 to +125
Proof Test Level kpsi 100 100
Minimum Bend Diameter
– Recommended Short Term5 mm 20 30
– Recommended Long Term6 mm 40 60
TECS 39 Fiber
• Numerical aperture of 0.39 is available in two designs:
– Low-OH¯ fibers for visible to near-IR transmission
– High-OH¯ fibers for UV to visible transmission
TECS 48 Fiber
• High numerical aperture of 0.48:
– Couples over 50% more power than TECS 39 fiber
– Couples over 370% more power than standard silica-clad fibers
– Less critical fiber alignment requirements
– Reduced bending losses
Fiber Type Numerical
Aperture4
TECS 39 Low-OH¯0.39 ± 0.02 Part Number FT-200-EMT FT-300-EMT
Stock Number 98-0400-1371-0 98-0400-1372-8
Maximum Attenuation 10 (6 typical) 10
@ 820nm (dB/km)
High-OH¯0.39 ± 0.02 Part Number FT-200-UMT FT-300-UMT
Stock Number 98-0400-1303-3 98-0400-1304-1
Maximum Attenuation 12 12
@ 820nm (dB/km)
TECS 48* High-OH¯0.48 ± 0.03 Part Number FT-200-URT
Stock Number 98-0400-1335-5
Maximum Attenuation 12
@ 820nm (dB/km)