Knowledge
Optical Power Meter Working Principle: How It Measures Light
How an optical power meter works: a photodiode converts light to current proportional to optical power. Learn about wavelength calibration, detectors, and referencing.
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Knowledge
Knowledge
OTDR Working Principle: Rayleigh Scattering and Fresnel Reflection
How an OTDR works: it sends a laser pulse and measures returning light. Rayleigh scattering reveals attenuation; Fresnel reflection locates events. Learn the working principle.
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Knowledge
PON Power Meter vs Optical Power Meter: What’s the Difference?
A PON power meter tests live PON links inline, reading upstream and downstream wavelengths at once; an optical power meter measures one wavelength on dark fiber. Learn when to use each.
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Knowledge
What Is a Fiber Cleaver Used For?
A fiber cleaver creates a flat, perpendicular end face on optical fiber for splicing and termination. Learn how it works, cleaving vs cutting, and why cleave quality matters.
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Knowledge
RJ45 Explained: Meaning, vs Ethernet, vs Cat6, vs RJ11
RJ45 stands for Registered Jack 45. Learn what it means, whether RJ45 is the same as an Ethernet cable or Cat6, and whether Ethernet uses RJ11 or RJ45.
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Knowledge
What Is the Primary Purpose of an Optical Fiber Inspection Scope?
The primary purpose of a fiber inspection scope is to check connector end faces for contamination and damage before mating. Learn how it works with IEC 61300-3-35.
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Knowledge
Which Light Sources Cannot Be Used in Fiber Optic Systems?
Incandescent and thermal lamps cannot be used in fiber optic systems. Learn why, what a fiber source must do, and the special case of the LED.
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Knowledge
What Are the Light-Emitting Sources Used in Fiber Optics?
The light-emitting sources used in fiber optics are LEDs, laser diodes, and VCSELs. Learn how each works, the coherent vs incoherent distinction, and which fiber each suits.
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Knowledge
What Is a Network Termination Unit (NTU)?
A Network Termination Unit (NTU) is the demarcation point between the provider's network and your premises. Learn what it does, how it relates to the ONT, and why it matters.
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Knowledge
What Are Fiber Optic Certification Tools? Tier 1 & Tier 2 Explained
Fiber optic certification tools prove installed cabling meets standards. Learn what an OLTS and OTDR do, the Tier 1 vs Tier 2 difference, and supporting tools.
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