Coherent Corp. develops, manufactures, and markets engineered materials, optoelectronic components and devices, and optical and laser systems and subsystems for the use in the industrial, communications, electronics, and instrumentation markets worldwide. It operates through three segments: Networking, Materials, and Lasers. The Networking segment offers telecommunication products for fiber-optic transmission; datacom transceivers, including pluggable transceivers for ethernet and fiber channel applications; and advanced optics, such as fiber and precision optics used in projection displays, crystal materials and components for optical communications, filters and assemblies for life sciences, sensors, instrumentation, and semiconductor equipment, as well as ultraviolet (UV), visible, and near-infrared spectroscopy optics for industrial lasers. The Materials segments provides laser optics and accessories; infrared thermal imaging optics and assemblies; polycrystalline materials; thermoelectric components, subassemblies, and systems; ceramic and metal-matrix composite products; semiconductor lasers and laser bars; Q-switched laser modules, uncooled pump laser modules, and laser systems for superhard materials processing; laser processing heads and beam delivery systems; EELs, VCSELs, and detectors; pumps for amplifiers; precision optical assemblies, infrared optics, thin-film coatings and optical materials; optical solutions; and integrated circuits for transceivers. The Lasers segment offers UV gas and solid-state lasers; UV optical systems, line beams, and mask-based imaging systems; UV nanosecond lasers; continuous-wave lasers and systems; amplifiers; subsystems and standard systems; IR lasers; crystals and diode lasers, and specialty polishing and coating solutions. The company was formerly known as II-VI Incorporated and changed its name to Coherent Corp. in September 2022. Coherent Corp. was incorporated in 1971 and is headquartered in Saxonburg, Pennsylvania.

Fabrinet provides optical packaging and precision optical, electro-mechanical, and electronic manufacturing services in North America, the Asia-Pacific, and Europe. The company offers a range of advanced optical and electro-mechanical capabilities in the manufacturing process, including process design and engineering, supply chain management, manufacturing, printed circuit board assembly, advanced packaging, integration, final assembly, and testing. Its products include switching products, including reconfigurable optical add-drop multiplexers, optical amplifiers, modulators, and other optical components and modules that enable network managers to route voice, video, and data communications traffic through fiber optic cables at various wavelengths, speeds, and over various distances. The company's products also comprise transceivers, tunable lasers, and transponders; and active optical cables, which provide high-speed interconnect capabilities for data centers and computing clusters, as well as Infiniband, Ethernet, fiber channel, and optical backplane connectivity. In addition, it provides solid state, diode-pumped, gas, and fiber lasers used in semiconductor processing, biotechnology and medical device, metrology, and material processing industries; and differential pressure, micro-gyro, fuel, and other sensors used in automobiles, as well as non-contact temperature measurement sensors for the medical industry. Further, the company designs and fabricates application-specific crystals, lenses, prisms, mirrors, laser components, and substrates; and other custom and standard borosilicate, clear fused quartz, and synthetic fused silica glass products. It serves original equipment manufacturers of optical communication components, modules and sub-systems, industrial lasers, automotive components, medical devices, and sensors. The company was incorporated in 1999 and is based in George Town, the Cayman Islands.

Lumentum Holdings Inc. manufactures and sells optical and photonic products in the Americas, the Asia-Pacific, Europe, the Middle East, and Africa. The company operates through two segments: Cloud & Networking and Industrial Tech. The Cloud & Networking segment offers components, modules, and subsystems to support the high-speed transmission of data over high-capacity fiber optic links in cloud data center, AI/ML, enterprise and communications services networking applications that enable the transmission and transport of data, video, and audio over high-capacity fiber-optic cables. It offers high-speed transceivers, reconfigurable optical add/drop multiplexers, coherent dense wavelength division multiplexing pluggable transceivers, and tunable small form-factor pluggable transceivers. We also sell laser chips for use in high-speed datacom transceivers and data interconnection solutions. The Industrial Tech segment offers solid-state lasers, kilowatt-class fiber lasers, ultrafast lasers, diode lasers, and gas lasers, as well as laser diode products. It serves to customers in semiconductor device, solar cell, display, electric vehicle, and battery manufacturing markets, as well as broader materials processing and precision micromachining end-markets. Lumentum Holdings Inc. was incorporated in 2015 and is headquartered in San Jose, California.

Infinera Corporation manufactures semiconductors, and supplies networking equipment, optical semiconductors, software, and services worldwide. It provides Infinera GX series for modular and sled-based platforms to support a various transport network applications; Infinera Cloud Xpress Family that is designed to meet the needs of internet content providers (ICPs), communication service providers, internet exchange service providers, enterprises, and other large-scale data center operators; and Infinera XT series, a platform that is designed to power cloud scale network services over metro, DCI, long-haul, and subsea networks. The company also offers Infinera 7300 series, an SDN-ready coherent optical transport system; and Infinera FlexILS open optical line system that connects various Infinera and third-party terminal equipment platforms over long-distance fiber optic cable providing switching, multiplexing, amplification, and management channels. In addition, it provides packet-optical transport platforms comprising Infinera XTM series, Infinera 7100 Series, Infinera mTera series, and Infinera 7090 series, as well as Infinera XTC series, a multi-terabit packet optical transport platforms that integrates digital OTN switching and optical DWDM transmission; and ICE-X, a suite of coherent pluggable optics designed to address point-to-point and point-to-multipoint transport applications from the network edge to the core. Further, the company offers Infinera Transcend Software Suite, a software platform, that provides automation capabilities, software tools, and applications for network operators. It markets and sells its products and related support services primarily through its direct sales force. The company was formerly known as Zepton Networks. Infinera Corporation was incorporated in 2000 and is headquartered in San Jose, California.

Clearfield, Inc. manufactures and sells various fiber connectivity products in the United States and internationally. The company offers FieldSmart, a series of panels, cabinets, wall boxes, and other enclosures; WaveSmart, an optical component integrated for signal coupling, splitting, termination, multiplexing, demultiplexing, and attenuation for integration within its fiber management platform; and active cabinet products. It also provides CraftSmart FiberFirst pedestals, an access terminal that offers a cable management and mounting bracket kit to support the deployment of access terminals; YOURx, an access terminal that provides flexibility with cable mid-span and internal splicing options; SeeChange, a terminal and hardened connector system; and FieldShield, a fiber pathway and protection method for reducing the cost of broadband deployment. In addition, the company offers fiber assemblies; fiber optic and copper cables, microducts, microduct accessories, and tools; and installation and connection accessories for fiber optic networks. It serves community broadband customers, large regional service providers, multiple system operators, and wireline/wireless national telco carriers. The company was formerly known as APA Enterprises, Inc. and changed its name to Clearfield, Inc. in January 2008. Clearfield, Inc. was incorporated in 1979 and is headquartered in Minneapolis, Minnesota.

LightPath Technologies, Inc. designs, develops, manufactures, and distributes optical components and assemblies. It offers precision molded glass aspheric optics, molded and diamond-turned infrared aspheric lenses, and other optical components used to produce products that manipulate light; and infrared products, including catalog and custom infrared optics. The company's products are used in defense products, medical devices, laser aided industrial tools, automotive safety applications, barcode scanners, optical data storage, hybrid fiber coax datacom, telecommunications, machine vision and sensors, and other sectors. It sells its products directly to customers in Europe and Asia. LightPath Technologies, Inc. was founded in 1985 and is headquartered in Orlando, Florida.

Optical Cable Corporation, together with its subsidiaries, engages in the manufacture and sale of fiber optic and copper data communications cabling and connectivity solutions primarily for the enterprise market in the United States and internationally. The company provides fiber optic and hybrid cables for high bandwidth transmission of data, video, and voice communications; and copper datacom cables, including unshielded and shielded twisted pair constructions. Its fiber optic connectivity products include fiber optic wall mounts, cabinet mount and rack mount enclosures, pre-terminated fiber optic enclosures, fiber optic connectors, splice trays, fiber optic jumpers, plug and play cassette modules, pre-terminated fiber optic cable assemblies, adapters, and accessories; and copper connectivity products comprising category compliant patch panels, jacks, plugs, patch cords, faceplates, surface mounted boxes, distribution and multi-media boxes, copper rack mount and wall mount enclosures, cable assemblies, cable organizers, and other wiring products for equipment rooms, telecommunications closets, data centers, and workstation applications. In addition, the company offers network, data storage, and telecommunications management systems, such as data cabinets, wall mount enclosures, horizontal and vertical cable management systems, and open frame relay racks; and datacom wiring products, including various enclosures, and modules and modular outlets for single dwelling and multiple dwelling residential uses. Further, it provides specialty fiber optic connectors and connectivity components, copper datacom connectors, and related systems and solutions for military, other harsh environment, and special applications, as well as cylindrical connector products. The company sells its products to distributors, original equipment manufacturers, value-added resellers, and end-users. Optical Cable Corporation was incorporated in 1983 and is headquartered in Roanoke, Virginia.

Actelis Networks, Inc. engages in the design, development, manufacture, and marketing of cyber hardened, hybrid fiber, networking solutions for Internet of Things and telecommunication companies in North America, Europe, the Middle East, Israel, and the Asia Pacific. It provides rapid-deployment networking solutions for wide-area IoT applications, including federal, state, and local governments; intelligent traffic systems; and military, utility, rail, telecom, and campus applications. The company's products include ethernet access devices; network aggregator switches; and Advanced MetaLIGHT/ Gigaline element management systems software, which enables remote management, monitoring, maintenance, and configuration of the installed equipment in the network. It also offers dynamic spectral software; and access broadband equipment. It serves offers its products through system integrators, distributors, contractors, resellers, and consultants. The company was incorporated in 1998 and is headquartered in Fremont, California.