CD-PMD Dispersion Testing
Specialist Chromatic Dispersion (CD) and Polarisation Mode Dispersion (PMD) fibre testing services across the UK and Europe.
TNS Comms provides certified fibre characterisation, OTDR testing, and optical performance verification to ensure high-capacity fibre networks meet modern transmission standards.
CD & PMD Fibre Testing Services
We are fully conversant with Chromatic dispersion and polarisation mode dispersion testing, all our engineers are fully trained in this subject and hold valid CFCE Certified Fibre Characterisation Engineer qualification, approved by (OTT) Optical Technology Training.
Today’s modern day requires high bandwidth the use of fibre optic cable has advanced and is now a cost effective solution for all businesses and organisations. With this in mind fibre optic testing has become a critical part of installation tasks and requires expensive equipment to validate the network performance.
Specialist Fibre Characterisation & Dispersion Testing
High-speed optical networks demand precise testing to guarantee performance, reliability, and future scalability.
TNS Comms delivers professional CD and PMD testing services for:
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DWDM and coherent optical networks
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Long-haul and metro fibre links
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Data centre interconnects
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5G and high-capacity backhaul
Our engineers support projects throughout the UK, Ireland, and mainland Europe, working on both live and dark fibre networks.
What is CD & PMD Fibre Testing?
Chromatic Dispersion (CD)
Chromatic Dispersion occurs when different wavelengths of light travel at different speeds through optical fibre, causing signal spreading and limiting transmission distance and bandwidth.
Polarisation Mode Dispersion (PMD)
PMD is caused by physical imperfections in fibre that result in different polarisation states travelling at different speeds, impacting high-bit-rate optical systems.
CD & PMD testing is critical for:
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High-speed transmission (10G, 100G, 400G+)
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DWDM and coherent optical systems
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Network upgrades and acceptance testing
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Preventing signal degradation and errors
Why CD & PMD Testing Is Essential?
Without accurate CD and PMD measurement, fibre networks may experience:
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Reduced data rates
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Increased error rates
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Limited transmission distances
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Failed network acceptance testing
Professional dispersion testing ensures fibre infrastructure is compliant, optimised, and ready for future network demands.
Our CD & PMD Fibre Testing Services
Chromatic Dispersion Testing
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End-to-end CD measurement
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Fibre characterisation for new and existing networks
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DWDM and long-haul fibre validation
Polarisation Mode Dispersion Testing
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Accurate PMD coefficient measurement
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Suitable for high-bit-rate optical systems
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Pre-deployment and fault investigation testing
OTDR Testing & Analysis
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Event detection and fibre integrity checks
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Fault location and splice verification
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Bidirectional OTDR testing for accuracy
Insertion Loss Measurement (ILM)
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End-to-end loss testing
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Connector and splice loss assessment
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Network acceptance and compliance testing
How we deliver accurate results:
TNS Comms engineers use industry-leading optical test equipment from trusted manufacturers such as EXFO and VIAVI.
Our testing aligns with recognised international standards including:
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ITU-T fibre characterisation guidelines
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IEC optical testing standards
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Network operator acceptance criteria
All results are supplied in clear, professional test reports suitable for client handover and compliance documentation.
UK & European CD & PMD Testing Coverage
We provide CD & PMD fibre testing services across:
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England, Scotland, Wales & Northern Ireland
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Ireland
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Mainland Europe (Germany, France, Netherlands, Belgium, Nordics and more)
Our mobile engineering teams enable rapid deployment for planned works or urgent testing requirements.
Industries We Support
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Telecommunications operators
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Internet service providers (ISPs)
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Data centres and hyperscale facilities
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Utilities and infrastructure providers
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Government and defence projects
Why Choose TNS Comms?
✔ Certified fibre testing specialists
✔ Proven UK & European delivery experience
✔ Advanced CD, PMD & OTDR testing capability
✔ Fast mobilisation and flexible scheduling
✔ Clear reporting and professional handover
TNS Comms acts as a trusted technical partner, supporting both short-term testing projects and long-term network programmes.
Request a Quote for CD & PMD Fibre Testing
Contact TNS Comms today for expert CD & PMD fibre testing across the UK and Europe.
Call: +44 1270 297691
Email: enquiries@tnscomms.co.uk
