Phosphorus doped fibers P-SM

Application notes:

 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.

 

Article P-SM-5, P-SM-7, P-SM-8

Phosphorous fiberPhosphorus doped fiber

 

 

 

 

 

 

 

 

     

           

 

 

 

 

 

 

   

Fiber specifications

Parameter / Article

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
Cutoff wavelength, µm 0,9 5÷ 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 are available on the request

 Phosphorus doped fiber (Article P-SM