Polarization Maintaining Passive Double-cladding Fiber-Everfoton Technologies Corporation Limited

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Polarization Maintaining Passive Double-cladding Fiber

Everfoton's panda type Polarization Maintaining Passive Double-cladding Fiber, adopting core and stress rod manufactured through the advanced PCVD process, has accurate refractive index distribution and excellent geometric and birefringent properties. Using special coating with a low refractive index, high NA (numerical aperture > 0.46) double-cladding transmission is achieved. Meanwhile, large mode field diameter ensures good connection with other passive double-cladding fibers, and perfectly matches PM ytterbium doped fiber, which is very helpful to ultrafast laser processing and reducing high pulse nonlinear effect.

Precise control of geometric parameters
Excellent birefringence
Matching active ytterbium-doped polarization-maintaining fiber with good fusion compatibility

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sales@everfoton.com

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Applications Specifications

Applications

Chirped pulse amplification
Second harmonic generator
Single-frequency narrow linewidth amplifier
Frequency doubling

Specifications

Fiber Type	GDF_DC 5/125-0.12（PM）	GDF_DC125/400-0.075（PM）	GDF_DC 20/400-0.065（PM）		GDF_DC 25/250-0.065（PM）
Part No.	DG1118-H	DG1118-I	DG1118-G	DG1118-F
Optical Properties
Core NA	0.12	0.075±0.005	0.065±0.005	0.065±0.005
Inner Cladding NA	≥0.46	≥0.46	≥0.46	≥0.46
Birefringence Index	2.5×10^-4（Typical）	3×10^-4（Typical）	4×10^-4（Typical）	2.5×10^-4（Typical）
Cladding Attenuation@1095nm (dB/km)	≤10.0	≤15.0	≤15.0	≤15.0
Geometrical Properties
Core Diameter (µm)	-	11.0±1.0	20.0±1.5	25.0±1.5
Cladding Diameter (µm)	125.0±1.0	125.0±1.0	400.0±5.0	247.0±3.0
Coating Diameter (µm)	345.0±10.0	245.0±10.0	550.0±15.0	395±15
Proof Test (kpsi)	≥100	≥100	≥100	≥100

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Precise control of geometric parameters Excellent birefringence High laser conversion efficiency Excellent beam quality Polarization-maintaining Ytterbium-doped Fiber Everfoton's panda type Polarization-maintaining Ytterbium-doped Fiber, based on advanced PCVD and MCVD technologies, has excellent geometric and birefringent properties, which can effectively reduce the nonlinear effect in the optical system. As a gain fiber, it has high optical conversion efficiency and outstanding beam quality, which is widely used in ultrashort pulse precision processing, lidar and other fields.

Step index profile Pure silica core structure Customized geometry, NA and coating materials Low-loss for UV-band Suitable for medium and low power (below wattlevel) energy delivery Ultraviolet Optimized Fiber (UVF) Everfoton's UV Fibers are designed for the light source wavelength between 200nm to 670nm. The fiber adopts high OH content and pure silica structure, ensuring the excellent properties of fiber attenuation and optical damage resistance. UV fibers with different geometric sizes and NAs can be customized according to different customer requirements.

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