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.

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.

Applied Optoelectronics, Inc. designs, manufactures, and sells fiber-optic networking products in the United States, Taiwan, and China. It offers optical modules, optical filters, lasers, laser components, subassemblies, transmitters and transceivers, turn-key equipment, headend, node, distribution equipment, and amplifiers. The company sells its products to internet data center operators, cable television, telecom equipment manufacturers, fiber-to-the-home, and internet service providers through its direct and indirect sales channels. Applied Optoelectronics, Inc. was incorporated in 1997 and is headquartered in Sugar Land, Texas.

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.

Luna Innovations Incorporated provides fiber optic test, measurement, and control products worldwide. The company offers test and measurement equipment for fiber optic components and sub-assemblies; polarization control products, including components, modules, and instruments to measure, manage, and control polarization and group delay in fiber optic networks; tunable lasers; and single frequency lasers. It also provides ODiSI sensing solution, which provides distributed strain and temperature measurements; distributed temperature sensing system; hyperion sensing products; Terahertz Sensing Systems that provide precise single and multi-layer thickness, density, basis weight, and caliper thickness measurements; and distributed acoustic sensing products. The company primarily markets its fiber optic test, measurement, and control products to telecommunications companies, defense agencies, government system integrators, researchers, original equipment manufacturers, distributors, testing labs, and strategic partners directly, as well as through manufacturer representative organizations, partner and distribution channels, technical sales engineers, value added resellers, and independent sales representatives. Luna Innovations Incorporated was incorporated in 1990 and is headquartered in Roanoke, Virginia.

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.