P-SM

P-SM - Phosphorus doped fiber

FORC-Photonics

1 rub.

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P-SM

Count

Core diameter
5 µm
Clad diameter
125 µm
Nonconcentricity
< 1 µm
Core NA
~ 0.18
Cut-off wavelength
~ 1 µm

Description
Description
Features

P-SM-5, P-SM-7, P-SM-8 series are specially designed for highly efficient Raman lasers and amplifiers operating in the 1.1-1.6 µm spectral range. The main advantage of phosphorus-doped fiber is a three times higher value of the Raman shift as compared to germanium-doped fibers. This feature allows one to strongly simplify the Raman fiber laser and amplifier design. For example, to construct a high-power laser @ 1480nm required for pumping Er-doped fibers, only two cascades of Raman wavelength transformation are necessary, whereas six cascades are necessary in the case of Ge-doped fibers.

Fiber specifications

Model	P-SM-5	P-SM-7	P-SM-8
Core diameter, µm	5.0 ± 0.5	5.0 ± 0.6	5.5 ± 0.5
Clad diameter, µm	125 ± 1	125 ± 1	125 ± 1
Core NA	0.18	0.18	0.18
MFD @ 1550nm, µm	4.0 ± 0.5	4.0 ± 0.5	4.0 ± 0.5
Cutoff wavelength, µm	0,95 ÷ 1,05	0,9 ÷ 1,25	0,9 ÷ 1,25
Optical loss (1064 nm), dB/km	< 2.0	< 2.9	< 2.1
Optical loss (1240 nm), dB/km	< 1.2	< 1.95	< 1.1
Optical loss (1480 nm), dB/km	< 1.0	< 1.45	< 1.0
Raman gain, dB/km×W	> 5.8	> 6	< 5
Nonconcentricity, µm	< 1	< 1	< 1

Other parameters including PM version are available on the request

JSC «Leningrad Laser Systems» (LLS) is the official distributor of FORC-Photonics and offers full technical support and worldwide shipping of products.