🔀 Wavelength Services

Deterministic Optical Transport for Critical Workloads

Wavelength Services provide dedicated, Layer-1 optical “lambdas” (channels) across a carrier’s Dense Wavelength Division Multiplexing (DWDM) backbone. Unlike shared, routed services, a wavelength gives you fixed bandwidth, predictable latency, and transparent transport between endpoints—ideal for data-center interconnect (DCI), storage replication, AI/HPC fabrics, live media, and low-latency trading.

In the SolveForce Codex, Wavelength sits in 🌐 Connectivity = Grammar and underpins 🖧 Networks & Data Centers with guaranteed optical paths. See the map → 📚 SolveForce Codex

🎯 What You Get with Wavelength

  • ⚡ Fixed, clean bandwidth — common rates: 10 Gb/s, 100 Gb/s, 400 Gb/s (and regionally 800 Gb/s); no oversubscription.
  • ⏱️ Deterministic latency — optical path engineered end-to-end; typical fiber latency ≈ 5 μs per km (one way) + minimal optical gear overhead.
  • 🧭 Transparency — carrier transports your signal at Layer-1; your Layer-2/Layer-3 design stays intact (EPL/OTN/OTU framing available).
  • 🛡️ Option for Layer-1 encryption — in-flight AES-256 on optical transponders for regulated or sensitive data.
  • 🧰 Choice of protection — unprotected for ultra-low latency, or protected with diverse routes/50 ms optical ring protection.
  • 📃 Strong SLAs — latency, jitter, availability targets; fault isolation down to span/regeneration segments.

🔎 When to Choose Wavelength vs. Other Connectivity

  • Pick Wavelength when you need:
  • 🚀 High throughput + low, stable latency (AI cluster interconnects, SAN replication, market data).
  • 🧪 Protocol transparency (carry your own Ethernet/FC/InfiniBand framing; avoid MAC/IP changes).
  • 🧩 End-to-end control (you own higher-layer policies; the carrier just moves light).
  • Pick Dark Fiber when:
  • 🔬 You want complete optical control (your DWDM, ROADMs, optics) and have ops skillcapex to manage it. → Dark Fiber
  • Pick Lit Ethernet when:
  • 🧱 You want a managed Layer-2 service (EPL/EVPL) without optical details. → Lit Fiber
  • Pick MPLS / SD-WAN when:
  • 🌐 You need any-to-any site connectivity with dynamic routing/policies. → MPLS • SD-WAN

🧱 Service Profiles & Interfaces

  • Ethernet Private Line (EPL) — native Ethernet handoff; simple plug-and-play for DCI and L2 domains.
  • Optical Transport Network (OTN) — OTU-framed wavelengths (e.g., OTU2/OTU4) with robust performance monitoring.
  • Common client interfaces — 10GBASE-LR, 100GBASE-LR4/ER4, 400G-ZR/ZR+ coherent pluggables (subject to distance/optics).
  • Fiber type — Single-mode (SMF) G.652D/G.655; connectors typically LC/SC; cross-connects provisioned in colo MMRs. → Colocation

🧭 Design Options (Pick Your Path)

1) Protection & Diversity

  • 🛤️ Unprotected — fastest, lowest overhead; rely on dual diverse circuits at the design level.
  • ♻️ Protected — optical ring or 1+1 path protection; ~50 ms switchover typical; verify exact SLA.
  • 🧭 Physically diverse routes — separate laterals, conduits, bridges, and POPs; order route maps/LOAs to confirm separation.

2) Distance Classes

  • 🏙️ Metro (≤ 80–120 km): few/no regenerators; minimal latency; perfect for active/active DC pairs.
  • 🗺️ Regional (≤ 600–1,200 km): add Forward Error Correction (FEC) and occasional regeneration (REG); confirm ROADM add/drop latency.
  • 🌎 Long-haul (1,000+ km): multiple spans with FEC/REG; consider 400G ZR+ vs. transponder shelf for reach vs. power/space tradeoffs.

3) Optical Building Blocks

  • 🔦 Transponders / Muxponders — map client lanes into wavelengths; aggregate multiple 10G into a 100G/400G line.
  • 🌈 DWDM Mux/Demux — combine many wavelengths onto one pair; color plan and channel spacing (50/100 GHz).
  • 🧿 ROADM — Reconfigurable Optical Add/Drop Multiplexer; dynamic pathing through the optical mesh; small add/drop latency.

🛡️ Security & Compliance at Layer-1

  • 🔐 AES-256 Layer-1 encryption — on transponders/coherent optics; near-zero latency tax vs. higher-layer encryption.
  • 🔒 MACsec/IPsec complement — add Layer-2 MACsec or Layer-3 IPsec where policy requires. → Encryption
  • 📋 Standards compliance — supports HIPAA/PCI DSS/NIST/FedRAMP posture when paired with higher-layer controls.
    See our security catalog → Cybersecurity

🧮 Sizing & Performance Planning

  • Throughput — right-size to 100G/400G for DCI/AI; consider 10G for point solutions or backup.
  • Latency budget — fiber path + ROADM + FEC/REG (~μs to low ms); set SLOs by application class:
  • Class A (metro): ≤ 2 ms one-way
  • Class B (regional): ≤ 15–35 ms
  • Class C (continental): ≤ 80–120 ms
  • Jitter — effectively near-zero at Layer-1; validate for synchronous apps (voice/video/market data).
  • Loss — design below 0.1% sustained; monitor optics for dB drift on long spans.

🏭 Common Use Cases

  • 🏢 Data Center Interconnect (DCI) — stretch L2 domains or run L3 EVPN/VXLAN over deterministic optical paths. → Networks & Data Centers
  • 💾 Synchronous Storage Replication — SAN/block replication (SRDF, MetroCluster, etc.) with strict RPO/RTO across metro. → SAN
  • 🤖 AI/HPC Fabric — east-west spine bandwidth for GPU pods and training clusters; predictable throughput for NCCL/collectives.
  • 📈 Market Data & Trading — low jitter for feed handlers/matching engines; route diversity for venue resilience.
  • 🎥 Live Media Contribution/Distribution — mezzanine feeds and uncompressed flows over engineered paths; backup via CDN. → CDN
  • 🧪 Lab/Research Networks — burst-heavy experiments; transparent framing for custom protocols.

🧰 Hand-Offs & Interoperability

  • 🧷 Cross-connects — fiber jumpers from your rack to the carrier DWDM panel (colo MMR).
  • 🧩 Client alignment — match client optics (e.g., LR4/ER4) and lane mapping; confirm FEC expectations.
  • 🔁 L2/L3 overlay choices — EPL for simple L2; or EVPN/VXLAN over routed cores for scale.

📊 SLAs, Monitoring & Operations

  • 🧾 SLA measures — latency, jitter, availability, and time-to-restore defined per route and service class.
  • 🔭 Telemetry — light levels, FEC counters, symbol errors, BER; integrate with NOC dashboards. → NOC
  • ♻️ Change control — route changes can alter latency; treat fiber work like a database schema change.
  • 🧪 Testing — RFC 2544/Y.1564 turn-ups; ongoing SLA audits; optical OTDR traces on long spans.

💵 Commercials & Ordering

  • 💸 Pricing model — Monthly Recurring Charge (MRC) per wavelength + Non-Recurring Charges (NRC) for install/cross-connects.
  • 🧭 Distance & route — metro vs. regional vs. long-haul affects price, regen count, and protection options.
  • 🗺️ Diversity paperwork — request route and POP diversity letters; require separate laterals and meet-me rooms if possible.

🛠️ Quick Checklist (Pre-Order)

  1. 🎯 Objective — DCI replication? AI fabric? Trading/market data?
  2. 🧮 Rate & count — 10G, 100G, 400G (now); consider future growth to 2× or 4×.
  3. 🧭 Routes — primary/secondary with physical diversity; document POPs and laterals.
  4. 🧱 Protection — unprotected vs. protected (ring/1+1); define failover behavior.
  5. 🔐 Security — L1 encryption required? Add MACsec/IPsec layers as needed.
  6. 🔌 Interface — optics type (LR4/ER4/ZR/ZR+), lane mapping, FEC.
  7. 🧷 Cross-connects — order MMR cross-connects at both ends.
  8. 📊 SLOs — latency/jitter/availability; add to monitoring & incident runbooks.
  9. 🧾 Contracts — term, MRC/NRC, diversity SLAs, restoration commitments.
  10. 🧪 Turn-up tests — RFC 2544/Y.1564, OTDR baseline; store “as-builts.”

🔄 Where Wavelength Fits in the Recursive Model

1) 🌐 Grammar — Wavelength is a Layer-1 transport rule set under Connectivity. → Connectivity
2) ☁️ Syntax — Feeds Cloud with deterministic pipes for migration, backup, DRaaS, and DCI. → Cloud
3) 🔒 Semantics — Carries Security controls (L1 encryption, MACsec/IPsec overlays) without altering meaning. → Cybersecurity
4) 🤖 Pragmatics — Enables stable, high-throughput AI pipelines and GPU fabrics. → SolveForce AI
5) 🏛️ Foundation — Language-first governance prevents ambiguity in routes, optics, and policies. → Primacy of Language

Open the full map → 📚 SolveForce Codex

📞 Get a Wavelength Design

Related pages:
Networks & Data Centers • Direct Connect / On-Ramps • Colocation • Dark Fiber • Lit Fiber • MPLS • CDN • NOC