7 segments · 86 companies · as of Sep 18, 2026
Optical Transport & Fiber
Coherent links, fiber and network routes between AI campuses
Where it sits
Fed by: Chip ManufacturingFeeds: Servers & Systems
AI workloads increasingly span buildings, campuses and regions. Coherent modems move traffic over long fiber routes, while fiber manufacturers, connectivity suppliers and network operators provide the physical capacity linking data centers across land and oceans.
Why now
800G coherent pluggables and 1.6T transport engines expand capacity per fiber. Hyperscaler route contracts, new submarine projects and hollow-core manufacturing agreements are driving cable and connectivity investment beyond the server hall.
Coherent transport systems
Transport platforms combine coherent modems, optical line systems and software to connect data centers over metro and long-haul routes. Capacity per wavelength, reach and open-line compatibility determine system choices.
6500 and Waveserver systems use WaveLogic 6 Extreme engines for up to 1.6 Tb/s per wavelength
leader1830 platforms combine Nokia PSE and acquired Infinera ICE7 1.2T engines for metro and long-haul DCI
leaderNCS transport and routed optical networking integrate Acacia coherent modules into IP and optical networks
majorOptiX OSN platforms provide high-capacity coherent backbone and metro links for Chinese cloud networks
majorZXONE optical transport systems connect metro and backbone networks with 400G/800G coherent channels
major400G/800G coherent backbone systems connect intelligent-computing networks; 1.6T remains a development path
majorVia 1Finity, supplies coherent transport; L1000/L2000 optical line systems target autumn 2026 availability
majorSpectralWave WX open optical platforms support 400G/800G links between data centers and carrier networks
nicheFSP 3000 TeraFlex coherent transport supports up to 1.2T per channel and 7.2T per rack unit
challengerApollo 9408 modular transport supports 400G-1.2T channels and 400ZR/800ZR routed optical networking
challengerDCP-802 dual transponder supports 400G and 800G coherent links for open DCI networks
challengerFlexRate coherent transport brings programmable 400G/800G capacity to regional and data-center links
nicheTJ1600-D3 DCI platform scales from 400G to 1.2T wavelengths, with up to 51.2T per shelf
challengerPL-8000G combines ten 800G coherent transponders in 1U with optical amplification and protection for metro DCI
nicheLightPad Max TM2400G-NK carries two wavelengths up to 1.2T each for regional transport and data-center interconnects
niche
Sources: ciena.com, nokia.com, adtran.com, ribboncommunications.com, packetlight.com, padtec.com.br
Coherent optics & line components
Coherent DSPs, pluggable modems, tunable lasers and wavelength-selective switches turn router ports into long-reach optical links. Vendors compete on power, reach and integration as 800ZR ramps and 1600ZR develops.
Via Acacia, supplies 400ZR/800ZR coherent modules and DSPs for routed optical and open transport networks
leaderOrion powers shipping COLORZ 800 optics; Libra 800G and Electra 1.6T coherent DSPs target second-half 2026 samples
leaderWaveLogic 6 Nano enables 800G coherent pluggables alongside WaveLogic 6 Extreme embedded engines
majorCoherent PSE and ICE optical engines, including Infinera integration, serve pluggable and embedded DCI designs
major400G/800G coherent transceivers, tunable lasers and optical components supply transport and DCI equipment
majorWavelength-selective switches, tunable lasers and coherent components supply reconfigurable optical line systems
majorVia NTT Innovative Devices, ExaSPEED 800 coherent DSP and optical components serve transport modules
nicheFITEL lasers and acquired Fujitsu Optical Components modulators and coherent receiver assemblies supply DCI optics
nicheOptical amplifiers, isolators and passive components support coherent modules and long-haul line systems
niche400ZR/800ZR coherent pluggables complement DCP open-line systems for router-based DCI
niche400ZR+ and 800ZR coherent pluggables extend its module portfolio into router-based data-center interconnects
challenger800ZR coherent modules use Marvell Orion DSPs for amplified links between data centers
challengerEOLO168HG 800ZR OSFP modules target coherent data-center interconnects beyond its short-reach datacom portfolio
challengerCoherent 800ZR modules plug into routers for DCI; FSP 3000 open line systems supply the optical layer
nicheVia Juniper, qualified 400ZR/800ZR coherent pluggables connect supported router platforms over metro fiber
nicheNetEngine platforms support 400ZR coherent pluggables for IP-over-DWDM links between metro and data-center sites
major
Sources: marvell.com, innolight.com, accelink.com, eoptolink.com, adtran.com, juniper.net
Optical fiber & cable
Fiber makers convert preforms into low-loss strands and high-count cables for campus and long-haul networks. AI demand increases fiber density and installation speed, with capacity constrained by preform, draw and cable manufacturing.
Low-loss fiber and dense cable support Meta's multiyear agreement worth up to $6B and other AI campus builds
leaderSirocco high-density microduct cables and optical fiber supply hyperscale campuses and intercity networks
majorSpider Web Ribbon and wrapping-tube cables, including AFL production, increase fiber density for AI networks
majorOptical fiber, ribbon cable and multicore-fiber development serve hyperscale campus and backbone connectivity
majorVia Lightera, formerly OFS and related units, supplies optical fiber, ribbon cable and data-center connectivity
majorPreforms, single-mode fiber and high-count cables provide vertically integrated supply for AI network expansion
majorHigh-density optical cables and MPO connectivity support 400G/800G data-center and backbone networks
majorDense fiber cable and multicore developments target 800G data-center and long-haul optical infrastructure
majore-Ribbon high-count optical cable, including 16-fiber ribbon designs, targets dense Japanese data-center wiring
nicheOptical fiber and Neuralis high-density cabling serve AI facilities, including MMC-based connectivity
challengerHigh-density OS2 fiber cable targets 800G/1.6T data-center cabling and long-distance connectivity
challenger864-fiber cable contracts for US AI data centers schedule deliveries from July 2026 through 2027
nicheVia LS Cable & System, supplies optical communication cable for campus and terrestrial network projects
nicheSynthetic quartz and optical-fiber preforms supply upstream material for expanding fiber production
nicheViper Core high-count microcables and duct systems target long-distance transport and data-center interconnect routes
challenger
Sources: investor.corning.com, sumitomoelectric.com, lightera.com, stl.tech, m.zttgroup.com, hexatronic.com
Hollow-core fiber
Hollow-core fiber reduces propagation delay by guiding light through air. Azure carries production traffic on selected routes; the wider market remains a manufacturing ramp with trials and specialist cable programs. Public data do not establish a global installed-kilometer total.
Via Lumenisity, deploys hollow-core links carrying Azure production traffic and qualifies expanded manufacturing
leaderCollaborates with Microsoft to industrialize hollow-core fiber in North Carolina; factory output is not disclosed
majorCovantics partners with Microsoft to expand hollow-core manufacturing; disclosed plans are not installed route capacity
majorDevelops manufacturable hollow-core cable with Relativity Networks; widespread customer deployment is unverified
challengerDevelops hollow-core fiber technology and works with Prysmian on manufacturable AI inter-campus cable
emergingHollowBand hollow-core fiber targets low-delay DCI; named hyperscaler production routes are undisclosed
challengerVia Lightera, demonstrated a next-generation hollow-core optical line in 2026; broad commercial deployment is unverified
emerging
Sources: techcommunity.microsoft.com, corning.com, heraeus.com, lightera.com, uk.prysmian.com, en.yofc.com
Structured cabling & fiber connectivity
Trunks, ferrules, connectors and patch panels turn bulk fiber into maintainable data-center links. Density, insertion loss, cleanliness and installation labor become critical as 800G/1.6T ports multiply the number of fibers.
Acquired CommScope CCS, including SYSTIMAX fiber and structured cabling, in January 2026
leaderEDGE and high-density optical connectivity turn fiber into preterminated AI data-center cabling systems
leaderChroma Link and Ortronics fiber connectivity provide high-density trunks, patching and cabling for AI racks
majorDataTuff and FiberExpress cabling and connectivity support data-center physical networks
majorBase-16 fiber system and preterminated assemblies support 400G, 800G and 1.6T data-center links
majorSTRATA MMC platform supports up to 3,456 fibers per rack unit for dense AI network patching
majorLightHouse fiber systems and MPO assemblies connect high-density AI racks and data-center halls
nicheLISA and IANOS high-density fiber management systems organize campus and data-center optical links
majorVia Rosenberger OSI, supplies modular fiber trunks, connectors and cabling systems for AI data centers
nicheMPO and SN-family miniature connectors terminate high-density 800G/1.6T optical cabling
majorMMC/MDC connector and MT ferrule platforms increase fiber density at optical modules and patch panels
majorPrecision fiber connectors and polishing machines control end-face quality in high-density optical assemblies
nicheVia controlled Hakusan, supplies MT ferrules and ceramic fiber interfaces for dense optics and CPO assemblies
majorNOVA platform brings modular LC/MPO fiber management into data centers; initial 4RU panels support 384 LC fibers
challengerData-center fiber trunks, cable and connectivity assemblies support rack, hall and campus interconnection
nicheDistributes fiber cabling, connectivity and deployment materials to hyperscale and enterprise data-center projects
majorVia Channell, acquired in June 2025, supplies fiber management enclosures for communications network builds
nicheVia AFL, PRIZM TMT and MMC fiber connectivity support dense AI data-center cabling and optical interfaces
majorData Center Systems businesses supply pre-terminated fiber assemblies and connectivity for hyperscale facilities
challengerNetscale high-density fiber panels and MPO trunks organize patching and structured cabling inside data centers
nicheMTP trunks and high-density fiber panels provide structured interconnects between racks and data-center distribution areas
nicheLANmark-OF and LANmark ULTIM fiber systems provide trunks, patching and high-density data-center cabling
nicheMPO connector assemblies and precision fiber terminations support high-density optical patching and low-loss links
nicheVia Suncall America, supplies fiber connectors and newly licensed SENKO SN interfaces; new AI-density products are ramping
niche
Sources: investors.amphenol.com, hexatronic.com, rdm.com, itinfra.datwyler.com, aginode.net, diamond-fo.com
Fiber network operators
Operators lease dark fiber, managed wavelengths and backbone capacity between AI campuses. Route diversity, rights of way, conduit availability and access to power-rich new locations distinguish networks beyond simple bandwidth.
Private Connectivity Fabric contracts total nearly $13B, including a dedicated North American network for Anthropic
leaderDark fiber and wavelengths connect AI campuses; Crown Castle Fiber Solutions acquisition closed in May 2026
majorPost-Windstream network expands South Central US AI routes under a 20-year, $500M hyperscaler contract
majorLong-haul fiber collaboration with AWS adds high-capacity routes designed for up to 1.6T wavelengths
majorAI Connect and national fiber connect compute sites; Corning agreement reserves 80M+ fiber miles for 2027-2032
majorOptical wavelength and IP-transit services connect AI infrastructure across a global carrier-neutral backbone
majorGlobal backbone and Nordic fiber upgrades provide hyperscalers with diverse high-capacity optical routes
majorIQ Network and optical wavelength services connect European and global AI data-center clusters
majorEuropean metro and long-haul fiber connects dense data-center markets and new hyperscale campus locations
nicheEuropean and transatlantic dark-fiber routes connect AI facilities; Aqua Comms completion was announced in January 2026
majorIZO services combine a global terrestrial and submarine backbone for cloud and enterprise data-center connectivity
majorIOWN All-Photonics Network links data centers with high-capacity optical paths for distributed computing
majorDomestic and global fiber networks connect Telehouse facilities and the Osaka Sakai AI data center
nicheSpectrum AI Accelerator offers 400G wavelengths to data centers; specific hyperscaler contracts remain undisclosed
nicheVia Comcast Business, sells dedicated DWDM wavelengths to enterprise and carrier customers, including data-center connections
nicheVia controlled Lightpath, sells dark fiber and wavelengths; disclosed AI transport awards reached $362M in 2025
challengerGlo Fiber Business sells dark fiber and 100G wavelengths with CoreSite connectivity across its Mid-Atlantic routes
nicheVia TDS Telecom, leases dark-fiber strands and IRUs to carriers and data centers; its lit wavelength catalog remains 10G
nicheVia Sparklight Business, sells carrier dark fiber and 10-100G wavelengths plus private Data Center Connect services
niche
Sources: ir.lumen.com, investor.crowncastle.com, business.comcast.com, spectrum.com, lightpathfiber.com, investor.shentel.com
Subsea systems, cable & owners
Submarine systems connect regional AI capacity through cable, repeaters, landing stations and specialized ships. Hyperscalers finance new routes, while a small supplier base delivers systems over multiyear construction schedules.
Designs, manufactures and installs repeatered submarine cable systems for hyperscalers and telecom consortia
leaderFrench-state-controlled supplier of submarine cable, repeaters and installation services for global cloud routes
leaderTurnkey submarine systems include the 2026 I-2SEA award linking India, Malaysia and Singapore, planned for 2029
majorVia HMN Tech, supplies turnkey submarine optical cable systems, including PEACE connectivity
majorVia unlisted LS Cable & System, supplies turnkey optical cable for JAKO; listed LS Marine Solution handles marine works
nicheVia Orange Marine and Elettra, installs and maintains submarine cables, including the Mediterranean Medusa system
nicheFunds planned Waterworth cable network spanning 50,000+ km and five continents to expand AI connectivity
majorGoogle funds Honomoana and Tabua transpacific cables; announced routes are distinct from verified ready-for-service links
majorAWS announced the US-Ireland Fastnet cable in September 2026; service is planned for 2028, not current capacity
majorBacks submarine routes including JAKO and I-2SEA to connect Azure regions and international AI capacity
majorOwns international submarine capacity and landing infrastructure that connects Asian and global data-center networks
majorGeoMesh submarine line-terminal systems upgrade subsea optical capacity; supplies dry equipment, not wet cable manufacture
majorSubmarine fiber-optic cable and repeaterless optical systems supply offshore and inter-island communication links
nicheNu-Wave subsea systems and repeaters support turnkey routes, including the 2026 FISH-in-SEAK contract
niche
Sources: tandfonline.com, ciena.com, m.zttgroup.com, xtera.com, nec.com, aboutamazon.com
Glossary
- DCI
- Data-center interconnect: optical links between separate buildings, campuses or regions.
- Coherent optics
- Optical transmission that measures light phase and amplitude to recover high-rate signals over long distances.
- ZR/ZR+
- Pluggable coherent optics for metro and regional links; reach depends on the module, fiber and line system.
- Hollow-core fiber
- Fiber that guides most light through an air-filled core, reducing propagation delay relative to solid glass.
- Dark fiber
- Unlit fiber leased to customers that install and operate their own transmission equipment.
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