7 segments · 112 companies · as of Sep 18, 2026
Optical Interconnect
Lasers, modules and photonic circuits moving data inside AI clusters
Where it sits
Fed by: Chip ManufacturingFeeds: Servers & Systems
Optical links carry accelerator traffic beyond the reach of short copper connections. The supply chain spans InP materials and lasers, DSPs, transceiver modules, photonic foundries, circuit switches and precision assembly, with major manufacturing clusters across Asia.
Why now
800G deployments and 1.6T ramps are tightening laser and assembly capacity. Nvidia committed $2 billion each to Lumentum and Coherent, while CPO production and 400G-per-lane demonstrations extend the roadmap beyond pluggable modules.
800G & 1.6T transceiver modules
Pluggable modules convert switch and adapter signals to light. Hyperscalers qualify suppliers on optical performance, power, yield and delivery capacity; Chinese manufacturers and US photonics firms anchor the market.
800G and 1.6T OSFP transceivers support hyperscale AI fabrics across EML and silicon-photonics designs
leader800G/1.6T FRO, LRO and LPO modules ramp for cloud buyers; 400G-per-lambda DR4 remains a demonstrated design
leader800G/1.6T transceiver portfolio combines captive lasers, detectors and silicon-photonics technology
majorCloud Light business supplies 800G/1.6T datacom modules alongside the group's laser components
major800G ramp and a March 2026 volume 1.6T order target AI hyperscalers; the order's buyer is undisclosed
challenger1.6T OSFP224 DR8 and 800G modules serve Chinese and global data-center interconnect customers
majorVia HGGenuine, supplies 800G and 1.6T FRO/LRO/LPO modules and optical engines for AI fabrics
majorVia acquired Source Photonics, adds vertically integrated high-speed datacom transceivers and lasers
challenger800G silicon-photonics modules ship in volume; 1.6T products move through customer qualification and ramp
challenger100G through 1.6T pluggables use EML, silicon photonics and TFLN optical-engine options
challengerHigh-speed optical modules complement copper cable assemblies in its data-center interconnect portfolio
challengerFormer Intel module business supplies 800G and 1.6T DR8, 2xFR4 and LRO pluggables
majorLinkX branded optical modules qualify Ethernet and InfiniBand links within Nvidia AI fabric systems
majorBranded 800G LPO and 1.6T OSFP optics accompany Nexus and Silicon One AI switching platforms
majorHisense-controlled Ligent supplies 800G/1.6T datacom modules; its IPO prospectus reports mass production
challenger800G optical transceivers accompany the company's data-center switch platform for AI connectivity
nicheOptical Solutions supplies active optical cables and datacom transceivers, including its Oplink product lineage
nicheLiteWave800 800G linear-drive modules support short-reach AI fabric links alongside its coherent transport portfolio
nicheOSFP 800G DR8, 2DR4 and 2FR4 modules support intelligent-computing Ethernet fabrics in Chinese data centers
major1.6T OSFP DR8/2FR4 and 800G transceiver catalog extends its passive and active optical component business
challenger800G OSFP DR8 modules use eight 100G lanes and MPO-16 interfaces for short-reach data-center fabrics
challenger800G OSFP DR8/2FR4 modules have entered small-volume delivery; 1.6T DR8 products remain at sample stage
challenger
Sources: equalocean.com, hkexnews.hk, lightcounting.com, n.o-netcom.com, investors.ao-inc.com
Lasers, modulators & optical chips
EMLs, continuous-wave lasers, modulators and photodetectors convert electrical data into light and back. InP, silicon photonics, thin-film lithium niobate and polymer devices compete on bandwidth, power, yield and qualification history.
100G/200G EMLs and high-power CW lasers underpin datacom modules and Nvidia-backed CPO capacity expansion
leader200G EMLs, high-power CW lasers and photodiodes serve datacom; six-inch InP expansion is a capacity buildout
leaderEML, VCSEL and photodetector products supply high-speed optical links alongside optical DSPs
major200G EML chips and 200G PIN photodiodes target 800G/1.6T transceiver transmit and receive paths
majorInP CW lasers and optical subassemblies supply datacom modules; future wafer expansion is distinct from device shipments
majorFitel laser and external light-source assemblies supply silicon-photonics and coherent optical links
majorLasers, photodetectors and optical analog chips support 200G-per-lane modules and 400G-lane demonstrations
majorCW lasers and 100G PAM4 EMLs supply optical modules; 200G PAM4 EML customer qualification is still progressing
challengerDFB laser chips and passive PLC/AWG devices feed domestic optical module and subassembly suppliers
challengerCW laser arrays support optical-engine programs; Jabil beta units target late 2026 and production targets 2027
challengerVia NTT Innovative Devices, supplies InP optical semiconductors and light sources for high-speed links
majorCombX multiwavelength lasers feed FalconX redundant external light-source modules for AI optical links
emergingHeterogeneously integrated InP-on-silicon laser chips entered customer testing in 2026 with Tower fabrication
emergingDevelops Lynx optical detectors and Quasar quantum-dot lasers; AI connectivity commercialization remains early
emergingTFLN Chiplet modulators power a TFC-assembled 1.6T DR8 reference module; 400G-per-lane PICs were introduced in 2026
challengerEO polymer modulator PDK with SilTerra targets 200G/400G lanes; initial tapeout and device validation precede volume
emergingQCOMB quantum-dot DWDM comb laser began evaluation-kit sampling in August 2026 for multiwavelength AI optical links
emergingCaptive DML laser fabrication supports its modules; 400mW CW lasers for silicon photonics were announced as samples
challengerVCSELs and PIN/APD photodetectors supply short-reach optical transmitters and receiver subassemblies
nicheInP PIN photodetectors and arrays provide receiver chips for 100G-lane and 800G optical module designs
nicheReports 100G PAM4 VCSEL shipments from its four-inch platform; named datacom volume customers are undisclosed
emergingEight-channel 100G EML chips target 800G DR8/FR8 modules; 200G EML products remain in development and qualification
emerging70/100mW CW laser diodes supply silicon-photonics modules; 100G/200G EML development extends the optical-chip portfolio
challengerReports a 400G/800G VCSEL production ramp; photodiodes remain in validation and 200G EML volume is unverified
niche
Sources: mitsubishielectric.com, trendforce.com, investors.ao-inc.com, everbrightphotonics.com, vertilite.com, luxnetcorp.com.tw
Optical DSPs, drivers & TIAs
DSPs recover data and compensate for channel impairments; drivers and transimpedance amplifiers interface with optical devices. Power budgets at 1.6T favor smaller processes, linear designs and transmit-only retiming.
Ara 3nm 1.6T DSP family adds Ara T transmit-retimed optics and Petra 100G-to-200G gearbox variants
leaderSian-family DSPs and Taurus 400G-per-lane optical DSP address 1.6T modules and the 3.2T roadmap
majorOptical PAM4 DSPs and SerDes target power-efficient 800G/1.6T links alongside its electrical cable silicon
challengerKeystone 400G/800G DSPs ship in volume; Rushmore 1.6T DSP and Washington TIA are in qualification
challengerFiberEdge and DirectEdge 200G-per-lane TIAs and laser drivers support 1.6T retimed and linear optics
major200G-per-lane TIAs and drivers enable 1.6T LPO and retimed modules, with 400G-lane transmit demonstrations
majorLinear and limiting optical TIAs and modulator drivers serve datacom and coherent optical receivers
nicheOptical receiver amplifiers and laser-control signal chains support datacom and transport modules
nicheVia acquired Alphawave, develops Dragonfly 800G/1.6T optical DSPs; Amazon collaboration was announced in September
challengerTPAFEA003/005 optical-control AFEs target 800G/1.6T SiPh modules; newly shown parts include preview-stage devices
emergingIntegrated-driver PAM4 DSPs serve optical modules; a 1.6T DSP was shown at CIOE 2026, with volume shipments unverified
emerging
Sources: marvell.com, semtech.com, qualcomm.com, 3peak.com, eet-china.com, cioe.cn
CPO & optical I/O engines
CPO puts optical engines beside switch or accelerator chips. Spectrum-X and Bailly are in early production ramps; Davisson volume is unverified. Pluggables remain complementary, while most accelerator optical-I/O offerings still require qualification.
Spectrum-X Photonics is entering production; Quantum-X targets 800G InfiniBand, with deployment volumes undisclosed
leader51.2T Bailly has limited production shipments; 102.4T Tomahawk 6-Davisson is verified at early-access stage
leaderCW lasers and external light sources support Nvidia photonics; demonstrated socketed 6.4T optical engines at OFC 2026
majorUHP CW lasers and ELSFP-350 sources address CPO; Nvidia committed to advanced lasers, not disclosed module allocations
majorCOUPE stacks electronic and photonic dies for Nvidia Spectrum-X CPO switch packaging and manufacturing
majorNamed manufacturing partner in Nvidia photonics; optical-engine assembly and test support the CPO production ramp
majorAcquired Celestial AI Photonic Fabric adds scale-up optical I/O; material revenue is expected after 2026
majorDustPhotonics PICs and Hyperlume microLED technology underpin acquired optical-engine programs; scale remains undisclosed
challengerVia Nubis, develops dense optical engines and CPO/NPO interconnects following the October 2025 acquisition
emergingDemonstrated integrated optical I/O chiplets for future chip-to-chip links; no named production system is verified
challengerEnosemi photonic IC team develops co-packaged optical interconnects for future AI system designs
emergingAcquired aiXscale fiber-chip coupling technology supports development of photonic scale-up connectivity
emergingTeraPHY chiplets and SuperNova lasers are in partner qualification; no named volume-shipping AI system is verified
challengerPassage L200 optical interposer and L20 6.4T engine target AI fabrics; L20 sampling is scheduled for late 2026
challengerTeralight interposer engines target 1.6T DR8/2xFR4 modules; module-engine orders do not establish switch-CPO volume
emergingODIN photonic engines target XPU and switch interconnects; 12.8T remains a 2026-2027 product roadmap
challengerLightBundle microLED optical links reached 1 Tbps evaluation-kit shipments in August 2026
emergingHeterogeneous photonic ASIC designs integrate lasers on Tower's PH18DA process for 800G/1.6T links
challengerChromX programmable multiwavelength platform combines CombX lasers and external light sources for AI fabrics
emergingIntegrated laser and silicon-photonics chips target dense WDM engines; customer qualification is underway
emergingVia Teramount TeraVERSE, detachable fiber-to-chip interfaces address CPO assembly and serviceability
majorDevelops graphene photonic chip-to-chip links; fabrication investment and commercialization remain underway
emergingBarium-titanate-enhanced silicon photonic modulators target compact, low-power 200G-per-lane optical engines
emergingNPG102 800G/1.6T optical PICs began volume shipments; NPC505 6.4T near-package engines target first-half 2027
challenger
Sources: trendforce.com, nvidia.com, investors.broadcom.com, nvidianews.nvidia.com, lumentum.com, towersemi.com
Photonics foundries & wafers
Specialist fabs, compound-semiconductor substrate and epiwafer suppliers enable photonic chips. Heterogeneous integration joins InP light sources with silicon circuits, while wafer quality and process capacity constrain optical-device output.
PH18DA heterogeneous InP-on-silicon process supports volume NewPhotonics 800G/1.6T PICs and OpenLight designs
leaderGF Fotonix and acquired Singapore AMF capacity provide silicon-photonics manufacturing for optical interconnects
leaderCOUPE combines electronic and photonic dies with advanced packaging for switch CPO production
majorPIC100 enters high-volume 300mm silicon-photonics production for 200G-per-lane optical modules
challengerDevelops a 300mm silicon-photonics platform; general launch targets 2027 and customer volume is unverified
challengerPhotonics-SOI engineered wafers provide optical-device substrates to silicon-photonics fabs
majorXPH90 SOI and silicon-nitride process collaboration with LIGENTEC supports integrated photonic manufacturing
nicheProvides low-loss SiN and SOI photonic platforms with X-FAB, including TFLN and III-V integration options
nicheIndependent InP foundry fabricates integrated photonic circuits on 4-inch and developing 6-inch platforms
nicheMEMS foundry supplies optical micromechanical devices; specific hyperscaler OCS customers remain undisclosed
nicheInP substrates feed laser and detector fabs; China export permits affect optical-device supply continuity
majorInP substrate expansion plan targets 7-10x capacity using up to JPY120 billion of investment
leaderInP epiwafers supply Tower's photonics platforms under a June 2026 multiyear volume agreement
majorGaAs and InP epitaxial wafers supply laser-device makers serving optical communications
majorIII-V epitaxial wafers support optical emitters and high-frequency receiver electronics
nicheSingle-crystal InP substrates supply EML and CW-laser manufacturers; investment expands wafer production capacity
majorIII-V foundry processes cover VCSELs, laser diodes and photodetectors; high-speed datacom expansion is developing
niche
Sources: towersemi.com, gf.com, blog.st.com, xfab.com, smartphotonics.nl, jx-nmm.com
Optical circuit switching
OCS changes physical light paths without packet conversion. Google operates Apollo in production; other vendors range from commercial switch suppliers to prototypes. An unnamed customer order or evaluation does not establish a named hyperscaler deployment.
Google's Apollo/Jupiter network operates MEMS optical circuit switches in production; external supplier identity is undisclosed
leaderR300 300x300 MEMS switches reconfigure cloud optical paths; named hyperscaler deployment is not publicly verified
leaderLiquid-crystal optical circuit switches generated initial revenue in FY2025 Q4; end customers remain undisclosed
majorPolatis DirectLight optical cross-connects won large orders from an unnamed hyperscaler; no Google attribution is assumed
majorG5 robotic fiber cross-connects automate DR4/DR8 patching; hyperscaler orders are company-reported and unnamed
challengerS320 commercial MEMS cross-connect offers 320 optical ports; named AI-hyperscaler deployment remains unverified
nicheOCS-on-a-chip combines silicon photonics and MEMS; April 2026 funding supports manufacturing scale-up
emergingPRISM photonic fabric couples optical switching with AI communication scheduling for accelerator clusters
emergingOC-32M 32-port silicon-photonic switch targets rapid optical reconfiguration in AI cluster fabrics
emergingONE silicon-photonic switches are entering customer deployments; Fabrinet manufacturing supports the early ramp
emergingUnveiled optical circuit switch products at OFC 2026 alongside its high-speed transceiver portfolio
emergingLightSphere X distributed optical circuit-switch modules target GPU superclusters and optical pooling
challenger64x64 silicon-waveguide OCS samples are in testing; the issuer excludes this product from its next two years of revenue plans
emergingProject Sirius researches nanosecond optical switching; a prototype is documented, with no Azure production deployment
emerging
Sources: cloud.google.com, coherent.com, hubersuhner.com, ipronics.com, static.cninfo.com.cn, microsoft.com
Optics assembly, passives & tools
Optical packaging requires accurate alignment, low-loss fiber attachment and repeatable testing. Contract manufacturers, fiber-array suppliers, connector makers and assembly-tool vendors turn photonic chips into deployable products.
Precision optical assembly and test support Nvidia's photonics ecosystem and customer 1.6T module ramps
leaderPhotonics sites build optical modules and engines, including the transferred Intel pluggable product lines
majorVia SPIL, provides semiconductor packaging in Nvidia's silicon-photonics manufacturing ecosystem
majorFAUs, passive optical subassemblies and external light-source components support 800G/1.6T and CPO designs
majorCeramic ferrules and alignment sleeves fix fiber geometry inside connectors; MT ferrules extend into dense module assembly
leaderNamed in Nvidia photonics manufacturing ecosystem; specific CPO switch assembly volumes are undisclosed
majorCompact connectors and detachable fiber interfaces support Spectrum-X and Quantum-X Photonics integration
majorMT and MMC ferrule platforms terminate dense multifiber optical assemblies used by module and cable manufacturers
majorSpecialty fiber and optical connectivity support Nvidia's CPO ecosystem and dense photonic packaging
majorAFL PRIZM TMT fiber interfaces and Fujikura FSM-100P+ splicers support dense optical assembly and CPO production
majorFiber, optical connection and component technology support Nvidia's silicon-photonics ecosystem
majorOptical cable and module assembly extends its connector manufacturing base into data-center photonics
challengerPrecision zirconia ferrules, sleeves and ceramic optical packages align fibers and protect laser or detector assemblies
majorFiber-array and optical coupling assemblies support CPO qualification, including its Himax collaboration
challengerPolarization-maintaining fiber arrays and MT-terminated fiber kits serve Nvidia's photonics ecosystem
majorOptical transceiver packaging and module production complement semiconductor system-in-package manufacturing
nicheMT ferrules and precision fiber-connectivity components feed multifiber datacom optical assemblies
majorVia wholly owned ficonTEC, supplies automated photonic alignment, bonding and optical assembly test tools
majorPrecision micro-optics and photonic manufacturing capabilities support laser and optical-package assembly
nicheOptical isolators, fiber arrays and micro-optics supply datacom modules, CPO assemblies and transport devices
majorPrecision 2D collimator arrays support OCS assemblies; disclosed orders leave the end customer unnamed
nicheWafer-level optics collaboration with FOCI targets CPO coupling; first-generation designs remain in validation
emergingOptical communications manufacturing assembles and tests complex photonic modules and network subsystems
nicheCeramic ferrules, split sleeves and fiber arrays provide precision alignment for datacom connectors and optical modules
niche
Sources: hkexnews.hk, global.kyocera.com, orbray.com, usconec.com, nvidianews.nvidia.com
Glossary
- CPO
- Co-packaged optics places optical engines beside switch or compute chips to shorten electrical links.
- EML
- A laser combined with an electro-absorption modulator, commonly used in fast optical transmitters.
- DSP
- A digital signal processor that compensates for transmission impairments in high-speed links.
- LPO / LRO
- Linear optics omit some or all module DSP functions to reduce power, placing more demands on host signals.
- OCS
- An optical circuit switch redirects fiber paths without converting payload traffic into electrical packets.
- InP
- Indium phosphide, a semiconductor material used to make lasers and other high-speed optical devices.
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