Terabit Frontier
1.6T / 800G
OSFP and QSFP-DD optics for AI-heavy data centre fabrics, hyperscale spine layers, and carrier core buildouts.
- 1.6T OSFP DR8 / FR8
- 800G QSFP-DD DR8 / FR8 / LR8
- AI fabric and hyperscale core deployment
Next Generation Optics
No OEM waiting for high-performance optics.
CT Verified transceivers from legacy speeds through to 1.6T. Every unit is coded to the required platform and backed by a 5-year warranty.
1G to 1.6TLegacy estates through to terabit-scale AI fabrics.
Platform CodedCisco, Arista, Juniper, Nokia, Huawei, and mixed-vendor estates.
Provenance CheckedPart, source, and compatibility checks before supply.
5-Year WarrantyCommercial confidence for critical optical supply.
Lead-Time Urgency
AI cluster build-outs are pulling supply from the usual channels.
Hyperscale and AI infrastructure demand has stretched optics supply industry-wide. If the usual two or three OEM vendors cannot keep pace, network projects need a broader verified supply chain.
Circular Telecom sources multi-vendor optics, codes each unit to the required platform, and keeps the CT Verified process visible: signal integrity, platform coding, provenance checks, and ESD-safe packaging.
Speed Tier Breakdown
From legacy edge continuity to terabit-scale fabrics.
High-Density Backbone
400G
QSFP-DD and OSFP modules for data centre interconnect, metro aggregation, and modern carrier backbone environments.
- DR4 / FR4 / LR4 reach profiles
- Core, metro, and WAN-ready stock
Core & Metro Workhorse
100G
Deep QSFP28 availability for proven estates, expansion projects, and high-performance network resilience.
- QSFP28 SR4 / LR4 / ER4
- CWDM4 and long-reach variants
Aggregation & Edge
25G / 40G
SFP28 and QSFP+ modules for aggregation switches, edge routers, and brown-field capacity upgrades.
- 25G SFP28 server-to-ToR
- 40G QSFP+ SR4 / LR4
Legacy & Edge Longevity
10G / 1G
Full-spectrum 10G SFP+ and 1G SFP modules to keep access infrastructure profitable and supportable.
- SFP+ SR / LR / ER / ZR
- 1G SFP access-layer modules
Cabling & Ancillary Optics
AOC / DAC
Supporting components that keep high-density infrastructure projects on schedule.
- AOC and DAC assemblies
- Breakout cabling and patching support
CT Verified Optics
Reliability is a technical mandate, not a label.
CT Verified optics are checked for signal integrity, platform coding, provenance, and packaging before shipment. That standard applies to every sourced optic we sell, whether or not it came from an ARC engagement.
ARC-Verified remains reserved for assets recovered through a client ARC process.
Next Generation Optics