Dense Wavelength-Division Multiplexing
Commercial optical transport systems that multiplex many closely spaced wavelength channels over optical fiber to scale backbone capacity.
Core metadata
- ID: dense_wavelength_division_multiplexing
- Era: Modern
- First known date: 1996 (exact)
- Region: United States long-haul carrier networks; later global optical-networking industry
- Review status: source_checked
- Maturity: established
Prerequisites
Dependents
- None.
Fields
Field lanes
- Telecommunications & Networking: Transmission Media
Node sources
- First Commercial DWDM System (IEEE Communications Society, 2026, review) • Supports: node, maturity
- ITU-T G.694.1: Spectral grids for WDM applications (International Telecommunication Union, 2020, official_agency) • Supports: node, maturity
- Introduction to DWDM Technology (Cisco, 2000, review) • Supports: node, maturity
Prerequisite edge evidence
Edge/source evidence summary:
- Prerequisite edges: 2
- Average edge confidence: 88%
- Prerequisite sources: 2
- review: 2
| Prerequisite | Type | Confidence | Evidence level | Note | Sources |
|---|---|---|---|---|---|
| Fiber Optics (fiber_optics) | required | 90% | review | Commercial DWDM at this scope is an optical-fiber transport system that places multiple dense wavelength channels onto fiber links. |
|
| Lasers (lasers) | required | 86% | review | DWDM channels are optical carriers at specific wavelengths; practical systems use controlled laser transmitters for those channels. |
|
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