Luna - OBR 4600 - Optical Backscatter Reflectometer

Luna - OBR 4600 - Optical Backscatter Reflectometer
  • “Zero Dead Zone” reflectometer
  • Measure 30 m with 10 μm sampling resolution
  • 80 dB dynamic range
  • Backscatter-level sensitivity (-130 dB)
  • High-speed scanning (1 m segments at up to 3 Hz)
  • Extended range provides 2 km range with no dead zone
  • Measure IL, RL, distributed loss, distance, polarization states, phase derivative and group delay
  • High resolution C and L band (OBR 4600) or O band (OBR 4613) capability


The Luna OBR 4600 is part of Luna’s award winning Optical Backscatter ReflectometerTM product line. Designed for component testing, short run network testing and troubleshooting, the OBR 4600 enables ultra high resolution reflectometry with backscatter level sensitivity. The OBR 4600 has spatial resolution as fine as 10 microns and no deadzone. The OBR 4600 comes with an extensive range of options including a strain and temperature sensing package with maximum sensor lengths up to 2 kilometers.

Key Features

  • The OBR 4600 has a dual display with an intuitive user interface that allows the user to simultaneously determine fault location and magnitude in the upper display and perform fault or component characterization using the frequency domain in the lower display
  • The user can easily locate, identify and troubleshoot macrobends, splices, connectors and breaks in a network up to 2km with as low as 3mm spatial resolution and no deadzone
  • Selected sections of the scan can be highlighted using controls in the upper display. An analysis in the frequency domain can be performed in the lower display to calculate insertion loss (IL), return loss (RL), polarization states and group delay
  • The OBR 4600 has as a standard offering multiple scanning options including fast scan (30 m with 10um resolution in less than 7 seconds), continuous scanning feature (continuous measurement of 1 m segment up to 3 hz). A spot scanning feature is also offered as an option.
  • The scanning wavelength range and centerpoint are user selectable

Spot Scan option

The spot scan option allows the user to narrow the scan range to 1 to 2 meter area within the network under test. This reduces the time required to scan and also allows the user to focus exclusively on the area of interest.

Hard shell carrying case
The OBR 4600 can be provided with a hard shell carrying case for applications that require portability or exposure to more rugged environments.

2km sensing length
The OBR 4600 range can be extended up to 2km with a 3mm spatial resolution and no deadzone.

Software Development Kit
A selection of DLL files can be provided to allow users to customize their own test equipment user interface with the OBR 4600 operation.

Lightpath Analysis Software
The Lightpath Analysis software allows the user to program a go/no go check based on a pre-selected characterization of a component or network. This option is ideal for testing and can reduce a complicated analysis to a simple pass/fail end of line production test.

Distributed temperature and strain sensing package
The temperature and strain sensing option allows the user to make strain or temperature measurements using sensors made with standard unaltered fiber optic cable that does not require fiber bragg gratings. The distributed sensing option can provide sub cm spatial resolution with sensors up to 2 km. For more information on high definition fiber optic sensing refer to the fiber optic sensing section of this website.

Our technology accelerates the development of advanced fiber optic networks with unprecedented visibility into optical component performance.

Ultra High Visibility inside Components
Silicon Photonics Testing

More Product Information

Luna - OBR 5T-50 - Optical Backscatter Reflectometer
Industry-leading combination of measurement speed, range, accuracy and resolution
  • 12 Hz acquisition rate
  • 8.5 meter measurement range
  • 0.0034% time-of-flight delay accuracy
  • 20 micron sampling resolution
Streamlined user interface and Software Development Kit (SDK) included
  • Optimize throughput with customized interface
Automatically locates reflective events and yields RL, IL and event location

Luna - OBR 4200 - Optical Backscatter Reflectometer
  • Verify quality of optical fiber cable assemblies, connectors and short-run networks
  • Troubleshoot and distinguish between macro-bends, splices, connectors and breaks
  • Locate insertion loss points – save hours of troubleshooting time
  • Verify return loss of multiple points in a fiber assembly or harness simultaneously
  • Verify and maintain aircraft and shipboard networks
  • Customize GUI for automated pass/fail verification of your fiber assembly using software development kit

Luna - ODiSI 6000 Optical Distributed Sensor Interrogator
  • Multi-channel (or single-channel) measurements of strain-multiplex: Over 300,000 measurement locations
  • Flexible, lightweight and easy to install sensors reduce time to first measurement
  • Passive, corrosion resistant, dielectric, flexible sensors go where other sensors can’t – in bends, around corners, embedded inside materials
  • Long sensor life – no drift or recalibration required, cycle counts >107
  • Large strain range and high resolution allow for mapping of complex strain fields and large strain gradients

Luna - OVA 5000 - Optical Vector Analyzer - All-Parameter Analysis
The OVA simultaneously performs these optical component characterizations every 3 seconds:
  • Insertion Loss (IL)
  • Return Loss (RL)
  • Polarization Dependent Loss (PDL)
  • Phase Response
  • Group Delay (GD)
  • Chromatic Dispersion (CD)
  • Polarization Mode Dispersion (PMD) / Second Order PMD
  • Min/Max Loss due to Polarization
  • Impulse Response
  • Jones Matrix Elements
  • Phase Ripple – Linear and Quadratic

Luna - T‑Gauge® Control Unit (TCU)
  • The T‑Gauge® Control Unit (TCU) is the central component of the T‑Gauge® family of products and serves as the source of the optical and electrical signals necessary to generate and detect terahertz. The TCU also transforms analog data into a digital signal that can be analyzed using the onboard processor and interacts with the wide variety of THz accessories.
  • The TCU is a 19 inch (483 mm) rack, wall, or table mountable instrument, consisting of an ultrafast laser, high-speed optical delay, ranging optical delay, power supplies, and signal conditioning electronics, with connectors for convenient interfacing to various optical and electronic components. The high-speed delay included in the TCU can be chosen from a number of delay length and speed options. When utilized in conjunction with T-Gauge® accessories, the TCU enables the user to generate and detect pulsed terahertz energy for a wide variety of measurements.

Luna - Fiber Optic Switch
  • High Port Count
  • Rapid Switching Time at 30 ms
  • Low Insertion Loss (< 1.5 dB)
  • Low Wavelength Dependent Loss (< 0.3 dB)
  • O, C and L band operation
  • USB 2.0 Interface

Luna - Saf-T-Chek Anomaly Detection System (ADS)
The Saf-T-Chek Anomaly Detection System (ADS) is designed for use by domestic or international governments and businesses for security screening of personnel. The Saf-T-Chek ADS® is primarily for detection of anomalous items in the head-region concealed by religious headgear, wigs, hats, caps or scarves. It will allow a security officer to provide targeted screening of personnel with minimal equipment footprint, exceptional ease of use, and light enough to be portable.

Luna - T-Ray® 5000 Terahertz Control Unit
The T-Ray® 5000 product family allows state of the art terahertz research to be performed quickly and easily. The modular construction and patented fiber-coupling of the T-Ray® 5000 allow experiments to be rearranged to perform a large number of experiments.

Luna - PHOENIX 1400 - Tunable Laser Source
  • Full C-band tunability
  • Smooth, linear scans
  • Narrow linewidth, low noise
  • Wavelength calibration in seconds
  • Integrated wavelength and power monitors
  • External triggering
  • 2 optical detectors and data acquisition channels
  • Industry leading wavelength accuracy and resolution

Luna Innovations

Luna Innovations mission is to help advance the continuing increase in data transmission rates for the public & private communications network with high speed optical receivers and test products, while also leveraging our unique fiber optic sensing technology to improve the structural testing of new composite elements and components in new aircraft and automobiles.

Luna Innovations Incorporated (NASDAQ: LUNA) was founded in 1990 and has been successful in taking innovative technologies from the applied research stage to product development and ultimately to the commercial market. In some cases, the successes led to the creation of independent businesses. We have created companies in our area of focus, sold some of them to industry leaders in their fields, raised private capital, formed joint ventures and entered into a number of licensing agreements.

Contact Details


301 1st Street, SW

Suite 200

Roanoke, VA 24011

Phone: 540-769-8400

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