Optical fibers for DUV

This fiber has been specially developed for DUV applications where photodarkening (also known as solarization) becomes main reason of transmission decrement during utility time caused by UV exposure. New fiber shows excellent stability of transmission after short time of exposure. Transmission recovery occurs when UV exposure is removed.

Benefits

• Improved transmission at DUV
• Recovery of fiber after UV exposure has been diminished
• Fiber is hermetically encapsulated by Carbon coating
• Carbon coating works as screen

Spectral attenuation of typical ZLDUV…CPH fiber (200 µm)

Induced Attenuation spectra for typical ZLDUV and ZLDUV..CPH fibers (200 µm)

Induced Attenuation at 214 nm for typical ZLDUV and ZLDUV..CPH fibers (200 µm)

Applications

Industrial / Scientific

• Spectroscopy
• Sensors
• Photolithography
• Laser welding / soldering / marking
• Laser delivery
• Nuclear plasma diagnostics
• Analytical instruments
• Laser diode pigtailing
• Pyrometry
• Semiconductor capital equipment
• Illumination and Monitoring

Medical

• Medical diagnostics
• Laser delivery
• Photodynamic Therapy
• Medical Treatments such as UV Psoriasis Treatment

Technical details

Available core Ø:	70 – 600 μm, larger upon a request
Core shapes:	circular (standard)
Standard Ø tolerances of fiber layers:	Core ± 2% Reflecting cladding ± 2% Jacket ± 5%
Operating t°:	-190 to +150°C
CCDR (clad to core ratio):	1.10, customized
Proof test:	100 or 70 kpsi
Bending radius, mm	Momentary: 50 x glass diameter, mm Long term: 120 x glass diameter, mm
Operating wavelength range:	190 – 800 nm
NA (numerical aperture):	0.22 ± 0.02 as standard others upon request
Improved Solarization resistance at:	190-250 nm

Download CPH brochure