Standard singlemode fibers are rotationally symmetric step-index fibers with no defined axes of propagation. Rotational asymmetry, produced during the manufacturing process, causes irregular birefringence so that the linearly polarized radiation coupled into the fiber is transformed into elliptically polarized radiation. The state of polarization is also altered by fiber bending or by temperature variations.
Performance Features
Technical Data
Curr. No. | Nominal wave- length λnom | Cutt-off wave length λco | Operational wavelength range [nm] | Mode field diameter MFD [µm] | Numerical Aperture NA [µm] | Pure Silica Core | Order Code |
---|---|---|---|---|---|---|---|
1 | 360 Si | < 360 | 360–470 | 2.3–3.0 | 0.12 | x | SMC-360Si-… |
2 | 400 Si | < 400 | 400–600 | 2.6–3.9 | 0.12 | x | SMC-400Si-… |
3 | 460 | < 460 | 460–630 | 3.0–4.1 | 0.12 | SMC-460-… | |
4 | 460 Si | < 460 | 460–550 | 3.2–3.9 | 0.11 | x | SMC-460Si-… |
5 | 530 | < 530 | 530–700 | 3.7–4.9 | 0.11 | SMC-530-… | |
6 | 630 | < 630 | 630–800 | 4.1–5.2 | 0.12 | SMC-630-… | |
7 | 630 Si | < 630 | 630–780 | 4.1–5.0 | 0.12 | x | SMC-630Si-… |
8 | 780 | < 780 | 780–1000 | 5.0–6.5 | 0.12 | SMC-780-… | |
9 | 980 | < 980 | 980–1300 | 6.3–8.4 | 0.12 | SMC-980-… | |
10 | 1300 | < 1300 | 1300–1600 | 9.2–11 | 0.11 | SMC-1300-… |