Viavi MAP-300 50um, 62.5um MM Bi-Directional IL/RL (850/1300nm)

Multimode modules are based on the same basic technology and architecture as the single-mode module described above. A standard dual-wavelength version is available (850, 1300 nm) for multimode
applications with an integrated power meter and optional 2x2 optical switches for automated bidirectional testing.

The multimode module requires the selection of fiber type. After years of fighting to balance test capacity investments between 50 μm (OM2, 3, 4) and 62.5 μm (OM1), VIAVI released a first-of-its-kind
module that tests both fiber types. The dual-fiber option can test 50 μm or 62.5 μm from the same module. Similar to the single-mode version, an optional bidirectional test is available which can also test
hybrid assemblies.

Measurements for RL from 15 to 60 dB are possible and can be achieved during concurrent IL measurements in less than 2 s per wavelength.

IL performance meets IEC 61280-4-1 recommendations for mode fill. For high-throughput testing, the mORL module uses the same laser sources for IL and RL. The multimode module includes a standard
set of low-power LED sources from which to select for extra precision. The low-power LED sources offer lower coherence without polarization, removing instability from speckle effects on the power
meter surface. Like the single-mode module, launch powers are monitored to achieve an IL stability of ±0.02 dB.