Fundamentals
What multi-vendor pluggable testing reveals about required optical signal-to-noise ratio (OSNR), margin allocation and network resilience, derived from published cross-vendor...
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September 4, 2026
ROADM Add/Drop Architecture: Colorless, Directionless, Contentionless ROADM Add/Drop Architecture Choices: Colorless, Directionless, Contentionless Design Trade-offs What each add/drop property costs...
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September 4, 2026
Why the industry stopped optimising bits per hertz and started counting instrumented fiber pairs per cubic meter of amplifier …
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September 4, 2026
The two geometric quantities that set how much nonlinear interference a span generates, derived from first... …
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September 4, 2026
Every C-band and C+L band plan... …
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September 2, 2026
Multicore and few-mode transmission, inter-core crosstalk and coupling management, and the fiber-pair and multicore... …
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September 1, 2026
Two evaluations of one route: which allowances load the delivered signal-to-noise ratio, which raise the required …
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August 31, 2026
Every recovery mechanism from the fiber span to... …
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August 27, 2026
Which components carry over unchanged from single-mode plant, which are re-qualified at a new operating point, which are …
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August 27, 2026
Why an air core removes distributed Raman gain, raises the launch-power ceiling by three orders of magnitude, and hands the...
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August 27, 2026
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