PacketLight’s PL-1000D fiber optic diagnostic solution constantly monitors signal quality and network faults in a single device.

PL-1000D Fiber Optic Network Monitoring Solution - Optical Infrastructure Products


The PL-1000D facilitates non-intrusive network visibility, providing carriers, dark fiber providers and enterprises real-time network diagnostics and improved service level agreements (SLAs).

The solution integrates an optical time domain reflectometer (OTDR) and an optical spectrum analyzer (OSA) into a 1U box for minimal rack space and improved CAPEX and OPEX.

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Flexible Design

The PL-1000D monitors up to eight fiber strands consecutively and operates standalone over dark fiber, lighted fiber, or a third party network without impacting network traffic. The device monitors the entire DWDM C-band spectrum and provides the optical spectrum, OSNR, and OTDR measurements of the fiber.

Key Advantage

Improved SLA

The PL-1000D remote monitoring solution saves costs and time as it reduces the need to deploy technicians to the field with dedicated test equipment.

Powerful Feature Set

The PL-1000D consists of two mechanisms for monitoring live fiber optic networks.

The OTDR locates fiber cut by sending high powered optical pulses into the fiber and creating Rayleigh back-reflections. The returning signals are measured and calculated, indicating the accurate location and intensity of the fault.

The OSA enables to monitor the OSNR and optical spectrum of each fiber and shows a full, accurate and detailed picture of the wavelengths used in the fiber.

PL-1000D Diagrams 

PL-1000D OTDR Diagram


PL-1000D OSA Diagram


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  • The device can be used as an optical time domain reflectometer (OTDR), optical spectrum analyzer (OSA), or both
  • Monitoring up to 16 fibers simultaneously, 8 by the OTDR and 8 by the OSA
  • Controlled with PacketLight web application or PacketLight’s Lightwatch™ NMS
  • OTDR:
    • Integrates 1:8 optical switch and OTDR
    • 30dB fiber loss
    • Embedded 1610nm OADMs
    • Accuracy 15m
    • Dead zone of 5m from transmitter
  • OSA:
    • Integrates 1:8 optical switch and OSA
    • Embedded splitters
    • Support full C-band
    • Supports 50GHz or 100GHz ITG grid
    • Measures the power, frequency and OSNR of the optical channels in the fiber
  • 1U footprint 19"
  • Dual AC/DC PSU
  • Hot swappable fan unit 
  • Low power consumption
  • Monitoring dark fibers service/infrastructure
  • Monitoring lighted DWDM fibers
  • In service OTDR measurements for DWDM networks
  • In service OSA measurements for DWDM networks
  • Detection of fiber tapping
  • Simultaneous OTDR of up to 8 fibers
  • OSA monitoring of up to 8 fibers
  • In service fiber monitoring
  • Can operate over dark fiber or over third party network
  • Integrates with other PacketLight solutions
  • Detection of fiber tapping attempts