Fibre Optics

In the following note, the LUNA OVA calculations for GD and CD are presented, along with a straightforward way for the user to calculate these parameters, starting from the OVA optical phase measurement, with a user-defined optical frequency derivative step size. Example measurements are included that illustrate these calculations and practical considerations. Click here to download the full article

LUNA’s Optical Backscatter Reflectometer (OBR) has the ability to make long distance length measurements of up to 2 kilometres.  This engineering note gives users step by step guidance on using the OBR to obtain skew and strain measurements. Click here to download the full article

A series of tests were performed by Luna to demonstrate the capability of the Optical Backscatter Reflectometer (OBR) as a tool for optical fiber spool characterization. This engineering note discusses skew and strain measurement results from these tests. Click here to download the full article

This engineering note outlines the capabilities of the Optical Backscatter Reflectometer (OBR) 4600 in characterising a chirped fibre Bragg grating (FBG). Data taken with the OBR instrument on a chirped FBG are presented and several competing technologies are mentioned. Click here to download the full article

Luna’s Optical Backscatter Reflectometer (OBR) is ideally suited for troubleshooting both single mode and multi-mode optical networks. This engineering note details the advantages and disadvantages of three methods of mode conditioning: 1) direct launch method 2) full equilibrium mode launch 3) partial mode launch. Click here to download the full article

LUNA’s Optical Backscatter Reflectometer (OBR) is well suited for making localised Insertion Loss (IL) measurements in reflection using the differences in fibre Rayleigh scatter amplitude on either side of a loss event. This engineering note details how the use of a circulator can allow the user to measure the total IL of their Device Under Test (DUT) in transmission. Click...

This engineering note details two methods of coupling light from single mode fiber to multi-mode fiber to produce stable and repeatable Insertion Loss (IL) and Return Loss (RL) measurements with LUNA’s Optical Backscatter Reflectometer (OBR). This note also discusses the differences between IL and RL results for the two mode launch conditions and details the consequences for OBR spatial resolution...

Overview Planar optical waveguide technologies are the key elements in the modern, high speed optical network. Recent broad deployment of optical and hybrid optoelectronic chips and planar light circuits (PLCs) has been driven by the cost, size and operational benefits that these architectures offer. From a measurement perspective, planar optical waveguide architectures offer several unique challenges. Even the highest quality...

LN Modulator is a device which converts information to signals by varying intensity and frequency of light. Capacity of transmission signal can be many tens times greater than conventional capacity by using this optical modulator. Application Note for LN Modulators