Fluoride optical fibers for amplifiers and lasers at 1.3 and 1.5 µm are becoming important components for optical fiber communications systems. Efficient operation of fluoride fibers requires a very high numerical aperture (typically >0.3), which unfortunately leads to increased coupling losses (insertion loss) and low return loss when connected to standard silica fibers. This coupling loss decreases the overall gain and seriously degrades the noise figure. By coupling UHNA4, which offers 0.35 NA, between the fluoride and standard silica fibers, these losses can be dramatically reduced.
Specifications
- Wavelength Range: 1100 - 1600 nm
- Mode Field Diameter: 3.3 µm @ 1310 nm
- Cladding: 125 ± 1.5 µm
- Coating: 250 ± 20 µm
- 2nd Mode Cutoff Wavelength: 1050 ± 50 nm
- Core Composition: SiO2/GeO2
- Typical Attenuation @ 1550 nm: <20 dB/km
- NA: 0.35
- Stripper Tool: T06S13
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