Polarization-Maintaining Thulium doped fibers

This thulium (Tm) doped fiber products have been developed for core pumped fiber lasers and amplifiers. High power lasers @ 2 microns need a reliable and efficient Tm-doped fiber.

Product features：CW and pulsed fiber lasers @ 2 µm、 High pump and consistent absorption、 Low M²、 Large mode area、 High efficiency、 High Tm₂0₃ concentration

Application area：2 µm CW & pulsed lasers、 2 µm amplifiers

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General Parameters

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Dimensional Drawing

Specifications

PN# Typical parameters			TDF-15/250-PM	TDF-25/400-PM
Optical specifications	Operating wavelength	nm	1900-2100	1600-2100
	Fiber Core NA	-	0.11±0.02	0.10±0.01
	Fiber cladding NA	-	≥0.46	≥0.46
	Cladding attenuation @860nm	dB/km	≤15.0	≤15.0
	Cladding absorption @793nm	dB/m	2.2±0.2	2.2±0.2
	Birefringence coefficient	10-4	3.0±0.5	3.0±0.5
Dimensions & Mechanical specifications	Fiber core diameter	μm	15.0±1.0	25.0±2.0
	Cladding diameter	μm	250.0±5.0	400.0±5.0
	Cladding shape	-	Circle,Panda	Circle,Panda
	Coating diameter	μm	395±10.0	550±15.0
	Coating materials	-	Low refractive index coating	Low refractive index coating
	Matrix material	-	Quartz	Quartz
	Screening strength	kpsi	≥100	≥100

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