Solutions & Applications
Telecom Network Sync · 5G Infrastructure · Data Center Connectivity · Optical Networks · Critical Networks
1. Network Architecture & Deployment
5G Fronthaul
Challenge: Low-latency, high-density connectivity between 5G base stations and centralized units.
Solution: 25G/50G eCPRI optical modules with precise timing synchronization.
25G SFP28 BiDi modules
50G SFP56 PAM4 modules
Industrial temperature range (-40°C to 85°C)
Midhaul & Backhaul
Challenge: Aggregating traffic from multiple sites with high reliability and scalability.
Solution: 100G/400G coherent optics with advanced FEC and monitoring.
100G QSFP28 coherent modules
400G QSFP-DD ZR/ZR+ modules
Carrier-grade reliability (10+ years lifespan)
Metro & Core Transport
Challenge: Maximizing fiber capacity for growing traffic between major hubs.
Solution: DWDM systems with flexible grid and programmable transponders.
400G/800G coherent muxponders
ROADM-based optical layer
EDFA/Raman hybrid amplifiers
2. Network Requirements by Segment
| Segment | Distance | Bandwidth | Critical Parameters | Optical Technology |
|---|---|---|---|---|
| 5G Fronthaul | 0–20 km | 25G/50G per link | Latency<100µs, sync=""> | Direct detect, grey optics |
| 5G Midhaul | 20–80 km | 100G/200G aggregation | High reliability, Network slicing | Coherent, DWDM-ready |
| Backhaul to Core | 80–600 km | 200G/400G per λ | 99.999% availability | Coherent with SD-FEC |
| Metro Core | Intra-city | 400G/800G, 16T per fiber | Flexible grid, CDC | Flexible coherent, ROADM |
| Long Haul | 600+ km | 200G/400G, submarine-ready | Ultra-low noise, high OSNR | Coherent with Raman |
3. Optical Product Specifications
| Product Category | Specifications | Quantity (Typical) | Key Features |
|---|---|---|---|
| 25G SFP28 BiDi | 1270/1330nm, 20km, Class C+ | 500–5,000 units | Single fiber, cost-effective fronthaul |
| 100G QSFP28 LR4 | 4×25G WDM, 10km, DDM | 200–2,000 units | Data center interconnect, aggregation |
| 400G QSFP-DD ZR | Coherent, 80–120km, SD-FEC | 50–500 units | Metro DCI, pluggable coherent |
| DWDM Mux/Demux | 96 channels, flex-grid, 75GHz | 10–100 units | Fiber capacity expansion, ROADM nodes |
| EDFA Amplifiers | 17/23dBm output, dual-stage, C-band | 20–200 units | Signal boosting, in-line amplification |
| Coherent Muxponder | 1.2T capacity, OTN switching | 5–50 units | Service aggregation, grooming |
4. Technical Challenges & Solutions
| Challenge | Solution |
|---|---|
| Fiber Exhaust | Deploy flex-grid ROADMs with 75GHz spacing, increasing capacity by 33% |
| 5G Latency Requirements | Coherent optics with sub-microsecond latency; URLLC-compliant fronthaul |
| Operational Complexity | SDN-controlled optical layer with zero-touch provisioning and AI-based failure prediction |
| Cost Pressure | 400G coherent delivers 40% lower cost per bit vs. 100G technology |
| Technology Migration | Disaggregated architecture: white box switches with merchant silicon and open line systems |
5. Business Benefits & ROI
40% CAPEX reduction — lower cost per bit with 400G coherent vs. 100G technology
60% OPEX savings — reduced power consumption with modern coherent DSPs and optimized amplifiers
16 Tbps capacity on single fiber pair using C+L band amplification and flex-grid
90% faster service provisioning with SDN automation and programmable optics
6. Deployment Timeline
| Phase | Duration | Focus Areas |
|---|---|---|
| Phase 1: Assessment | 1–2 months | Network audit, traffic analysis, requirements gathering |
| Phase 2: Core Upgrade | 3–4 months | Metro core DWDM, coherent 400G deployment |
| Phase 3: Aggregation | 2–3 months | 5G midhaul/backhaul, edge connectivity |
| Phase 4: Access | 4–6 months | Fronthaul deployment, last-mile fiber enhancement |
| Phase 5: Optimization | Ongoing | Performance tuning, automation, expansion planning |
Planning a 5G transport upgrade?
Our carrier solutions team will audit your network, design the architecture, and deliver a full BOM — typically within 48 hours.
Email: Info@apexallinone.com | WhatsApp/Phone: +852 9821 3834
