Fibre optic development tools cover everything you need to bring up and characterise a fibre link before it goes into production — and to debug one that isn't performing. That includes optical power meters, visual fault locators, connector cleaning kits, media converters, patch cords, and SFP, SFP+, and SFP28 optical transceivers.

An optical power meter measures received power in dBm. It's the first thing you reach for when verifying a link budget: if received power is within the receiver's sensitivity window and you're still getting errors, the fault lies elsewhere. Visual fault locators inject 650nm red light into the fibre — visible through the jacket at macro-bends and break points, useful for tracing short runs and confirming continuity. They can't measure loss or locate a splice reflectance, but they're fast and cheap. Connector contamination is consistently the top cause of elevated insertion loss in deployed fibre systems; a clean connector adds roughly 0.3–0.5dB, a dirty one can add 3dB or more and kill a link that was otherwise fine. Clean before every mating, without exception.

For loss characterisation over distance, an OTDR maps backscattered pulse return time to locate splices, bends, and breaks to within a few metres. For most single-project development work, renting OTDR time is cheaper than buying the instrument.

Transceivers: SFP for 1G, SFP+ for 10G, SFP28 for 25G, all with LC duplex connectors. Multimode fibre has a 50µm core (OM3/OM4, aqua jacket) and runs at 850nm over short distances. Single-mode has a 9µm core (yellow jacket) and runs at 1310nm or 1550nm over longer distances. The two are not interchangeable — core size, wavelength, and launch conditions are all different.

TRX sources fibre optic tools and transceivers from Coherent (formerly Finisar/II-VI), InnoLight, Fluke Networks, and Ideal Networks through authorised distribution. No minimum order. In-stock lines ship to Johannesburg, Cape Town, Durban, and Pretoria. For parts that need sourcing, we'll give you an actual lead time.

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