Optical Safety Standards

The international laser safety standard for fiber optic comunications systems is:

IEC 60825-2 Ed. 3.2 2011, ‘Safety of laser products Part 2: Safety of optical fibre communications systems (OFCS)’ Specifically Annex D, table D.1

Equivalent USA standards are administered by the FDA (Food & Drug Administration) under 21CFR1040.10. This standard gernally defers to the IEC standard for product classification and labelling.

Laser safety classes relevant to Kingfisher Test Equipment are:

  1. Most infra-red test sources and VFL pens are Class 1. This means they are eye safe, witn no special precautions needed.
  2. Some high power VFL instruments are up to Class 2M power output, and some precautions may be required for these.

Class 2 devices are visible, so the "eye aversion" or "blink" response will cause the user to look away before eye damage is caused, allowing a higher safe level. The "M" suffix means that an unfiltered magnifying device must not be used.

Power meters don't emit light, but safety precautions will need to match the maximum light level that could be emitted from an attached fiber.

 

Wavelength
& fibre type

Hazard Level 
For core diameter SM 11 µm and MM <150 µm NA=0.18  

1 1M 2 2M 3R 3B
633 nm
(MM)
1.95 mW
+3 dBm
3.9 mW
+5.9 dBm
4.99 mW
+7 dBm
10 mW
+10 dBm
24.9 mW
+14 dBm
500 mW
+27 dBm
780 nm
(MM)
2.81 mW
+4.5 dBm
5.6 mW
+7.5 dBm
    14.4 mW
+11.6 dBm
500 mW
+27 dBm
850 nm
(MM)
3.88 mW
+5.9 dBm
7.8 mW
+8.9 dBm
    19.9 mW
+13 dBm
500 mW
+27 dBm
980 nm
(SM)
1.8 mW
+2.6 dBm
2.66 mW
+4.2 dBm
    9.21 mW
+9.6 dBm
500 mW
+27 dBm
1310 nm
(MM)
77.8 mW
+18.9 dBm
156 mW
+21.9 dBm
    399 mW
+26 dBm
500 mW
+27 dBm
1310 nm
(SM)
25.8 mW
+14.1 dBm
42.8 mW
+16.3 dBm
    129 mW
+21.1 dBm
500 mW
+27 dBm
1420 nm
(SM)
10.1 mW
+10 dBm
115 mW
+20.6 dBm
      500 mW
+27 dBm
1550 nm
(SM)
10.2 mW
+10.1 dBm
136 mW
+21.3 dBm
      500 mW
+27 dBm