Single Mode Fibers
Amplification fluoride fibers
2 weeks delivery time
Response within 48h
Thanks to their high RE solubility (up to 100 000 ppm) and low phonon energy, LVF fluoride fibers offer dozens of active transitions, enabling a broad range of application possibilities from visible to mid-infrared.
Their low phonon energy make them very good glass host for amplification in nIR.
Thus we have two standard fiber to amplify signal in near infrared :
– Praseodymium Doped Fiber Amplifier (PDFA) amplification from 1280 to 1330 nm, using a Pr doped ZBLAN fiber, pumped at 976 or 1020 nm (O-band amplifer).
– Thulium Doped Fiber Amplifier (TDFA) amplification from 1460 to 1520 nm, using a Tm doped ZBLAN fiber, pumped at 1420 nm (S-band amplifier).
Please note we have other designs in stock that can be used to amplify light at different wavelengths.
Rare earth | Molar content (ppm) | ∅core/clad (µm) | λc (*) (µm) | Amplifier | Operating wavelength | Small signal gain |
|---|---|---|---|---|---|---|
Pr | 1 500 | 3/125 | 0.9 | PDFA | 1280 – 1320 nm | > 26 dB |
Tm | 6 000 | 3/125 | 0.9 | TDFA | 1460 – 1520 nm | > 32 dB |
(**) | undoped | 3/125 | 0.9 |
(*)λc = cut-off wavelength
O-band amplification
Find below results obtained at LVF regarding amplification of O-band with our Praseodymium doped ZBLAN fiber :
- Maximum gain = 31 dB amplification for bidirection pumping was obtained for – 30 dBm input power.
S-band amplification
Find below results obtained at LVF regarding amplification of S-band with our Thulium doped ZBLAN fiber :
With a bidirectional pumping at 1420 nm, TDFA amplifies light from 1460 up to 1520 nm.
- Maximum gain = 39 dB amplification for bidirection pumping was obtained for – 30 dBm input power.
Fibers and modules
Depending on your needs, the fiber can be supplied bare.
Since standard splicing procedures cannot be applied to fluoride fibers, we can also prepare a fiber module with silica fibers at each end.
With such fiber solution, you do not need to pay attention to the specifics of soft fiber handling and splice silica according to standard processes.
Bare fiber
Amplifier modules
Depending on your need and wavelength range of interest, fibers can be customized in order to adjust their cut-off wavelength, core diameter and rare earth content.
Standard price available
in our catalog on-line
CUSTOMIZE
your own RE doped fiber for visible, nIR of mIR amplification
- Doping/co-doping (rare earth, molar content)
- Cut-off wavelength (single mode)
- Custom NA (single mode)
- Core size: 3 µm single mode or more
All our fibers are available as fiber patch cables or fiber bundles
You have requirements about high power laser delivery?
LVF proposes IR screened fibers and endcaps solutions.
