| Company Name | | Active fiber detectors |  |
| | Attenuation meters |  |
| | Bit-error-rate |  |
| | Diode laser |  |
| | Fiber-diameter measurers |  |
| | Fiber-end-face interferometer |  |
| | Index profilers |  |
| | Light-pulse generators |  |
| | Multimeters |  |
| | Numerical aperture |  |
| | Optical channel monitors |  |
| | Optical loss test sets |  |
| | Optical time-domain reflectometers |  |
| | Power meters |  |
| | Signal generators |  |
| | Sources |  |
| | Testers, dispersion |  |
| | Testers, illumination |  |
|