Waferpedia

JDSU

OLS-56

Precision OpticsJDSU OLS-56 family
Research Quality: 40% complete

The JDSU OLS-56 is a portable optical radiation source used for testing fiber optic networks. The JDSU OLS-56 supports single-mode wavelengths of 1310, 1490, 1550, and 1625 nm and multimode wavelengths of 850 and 1300 nm. The JDSU OLS-56 delivers output power from -7 to 0 dBm with an accuracy of 0.3 dB.[1]

OLS-56 — tehencom.com
Fig. 01OLS-56tehencom.com[1]

Power

270 Hz, 1 kHz and 2 kHz[1]

Performance

0.3 dB[1]

Optics

1, 2, 3 or 4 (depending on the model)[1]

What it is

The JDSU OLS-56 is a portable optical radiation source. JDSU is a manufacturer of test equipment for fiber optic communications. The OLS-56 is one of a series of portable optical sources offered by JDSU.[1]

What do the numbers mean?

Power & electrical4

Radiation modulation
270 Hz, 1 kHz and 2 kHz[1]
Accurate?
Radiation modulation
270 Hz, 1 kHz, 2 kHz[1]
Accurate?
Modulation frequencies
270 Hz, 1 kHz, 2 kHz[1]
Accurate?
Radiation modulation frequencies
270 Hz, 1 kHz, 2 kHz[1]
Accurate?

Optics & imaging19

Number of wavelengths
1, 2, 3 or 4 (depending on the model)[1]
Accurate?
Wavelengths (single mode)
1310, 1490, 1550, 1625 nm[1]
Accurate?
Wavelengths (multimode 50/125 µm)
850, 1300 nm[1]
Accurate?
Number of wavelengths
1, 2, 3, or 4 (depending on model)[1]
Accurate?
Wavelengths (multimode)
850, 1300 nm (50/125 µm)[1]
Accurate?
Number of wavelengths
1, 2, 3 or 4 (model-dependent)[1]
Accurate?
Single-mode wavelengths
1310, 1490, 1550, 1625 nm[1]
Accurate?
Multimode wavelengths
850, 1300 nm (50/125 µm)[1]
Accurate?
Wavelengths (multimode)
850, 1300 nm (multimode 50/125 µm)[1]
Accurate?
Type
Portable source of optical radiation[1]
Accurate?
Wavelength count
1, 2, 3 or 4 depending on the model[1]
Accurate?
Multimode wavelengths
850, 1300 nm[1]
Accurate?
Wavelengths (multimode)
850, 1300 nm (50/125 µm fiber)[1]
Accurate?
Wavelengths (multimode)
850, 1300 nm[1]
Accurate?
Single-mode wavelengths
1310 nm, 1490 nm, 1550 nm, 1625 nm[1]
Accurate?
Multimode wavelengths (50/125 µm)
850 nm, 1300 nm[1]
Accurate?
Equipment type
Portable source of optical radiation[1]
Accurate?
Multimode wavelengths
850, 1300 nm (multimode 50/125 µm)[1]
Accurate?
Multimode wavelengths
850, 1300 nm (50/125 µm fiber)[1]
Accurate?

Performance1

Output power accuracy
0.3 dB[1]
Accurate?

Configuration & options5

Output power
-7 to 0 dBm[1]
Accurate?
Output power range
-7 to 0 dBm[1]
Accurate?
Fiber type
single-mode and multimode 50/125 µm[1]
Accurate?
Model group
JDSU OLS-55, OLS-56[1]
Accurate?
Model line
JDSU OLS-55, OLS-56[1]
Accurate?

Vintage & configurations

Documented models & variants

DesignationGenerationVintageChangesSource
OLS-55———tehencom.com[1]
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What replaced it?

  • siblingJDSU OLS-55— OLS-55 and OLS-56 are listed together as portable sources of optical radiation with identical specifications.source[1]

What does it need to run?

Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.

  • Radiation modulation270 Hz, 1 kHz and 2 kHz[1]
  • Radiation modulation270 Hz, 1 kHz, 2 kHz[1]
  • Modulation frequencies270 Hz, 1 kHz, 2 kHz[1]
  • Radiation modulation frequencies270 Hz, 1 kHz, 2 kHz[1]

Where are the manuals?

Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.

Not publicly documented

Field notes

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Frequently asked questions

What output power range does the OLS-56 provide?

The OLS-56 provides output power from -7 to 0 dBm.[1]

What modulation frequencies are supported by the OLS-56?

The OLS-56 supports radiation modulation at 270 Hz, 1 kHz, and 2 kHz.[1]

What wavelengths are available for single-mode operation on the OLS-56?

The OLS-56 supports single-mode wavelengths of 1310, 1490, 1550, and 1625 nm.[1]

What is the output power accuracy of the OLS-56?

The output power accuracy of the OLS-56 is 0.3 dB.[1]

Not publicly documented

The following facts about the OLS-56 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the OLS-56 are on record.

    Answerable by: OEM historical records or a trade-press announcement

  • The control-system platform and OS era of the OLS-56 are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • No publicly documented failure modes or field errata for the OLS-56 are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

  • The process node or technology generation of the OLS-56 is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

  • No publicly documented compatible parts, consumables, or accessories for the OLS-56 are on record.

    Answerable by: an OEM parts catalog or a service engineer

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Sources & citations

Sources (1)Every fact above is drawn from these public sources
  1. [1]tehencom.com — tehencom.comtehencom.com
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Last updated Oct 8, 2026.

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