Optical Fiber End Caps for Laser, Amplifier And Cable

Product Item : QiM20-006
Category： Micro Glass Rods
Material: Corning 7980 / 7979, Heraeus fused silica, Ohara fused silica
Aperture: 90% of the central diameter area
Flatness: λ/10 @ 632.8 nm
Parallelism: ＜15″
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Optical Fiber End Caps for Laser, Amplifier And Cable
Fiber end cap refers to a small section of quartz rod or GRIN fiber fused onto the end face of an optical fiber. There are two types of optical fiber end caps. One is the end cap designed to reduce the optical energy density at the transmission interface of high-power laser optical fiber, which is fused between fused silica rod and optical fiber. Another type is the self focusing lens end cap based on the fusion of GRIN fiber and ordinary single-mode fiber for micro imaging needs. As an important optical component in the QBH (fiber laser output head), the end cap is mainly used to solve the fiber laser output problem, and also back reflection problem in the industrial processing.

Product Features
• Customization: The models of fiber optic cables and end caps can be customized by the customer
• Precise control: The length of the end cap can be precisely controlled
• Stable and reliable: The quality of Co2 dissolution point is reliable
• Precise welding: capable of achieving continuous and precise welding of multiple end caps
• Diversified customization of end caps: The front end of the end cap can be ground flat or inclined, and the front end of the end cap can be coated with AR film.

Main Parameters

Material	High purity ultraviolet fused silica Corning 7980 or Corning 7979, Heraeus quartz, Ohara quartz/coreless fiber/refractive index gradient fiber
Size specification	1.8-100mm
Aperture	90% of the central diameter area
Flatness	λ/10 @ 632.8 nm
Smooth finish	10/5 S/D, optimal up to 0/0 S/D
Parallelism	＜15″
Fiber type:	SMF-28E/SM-Hi1060/MM-200-220-22NA/customized by customer
Total fiber length and stripping length	customized by customers
Coating requirement	R<0.2% @ CW ± 25nm/can be customized according to customers

Product Application

• QBH fiber optic connector
• High power laser coupling
• Micro fiber imaging system

Optical Detection Capability

We use Zygo New View 8300 coherent scanning interferometer or atomic microscope (AFM) for high-precision measurement of roughness, ensuring a more uniform polished substrate surface. Combined with high-power coating technology, the end cap has stronger resistance to damage.

Our company provides various customized specifications of fused quartz end caps, with material options including Corning fused silica, Heraeus fused silica, Ohara fused silica, etc. Coating options include IAD and IBS processes, providing customers with ideal solutions for fiber laser applications from low power to high power.