Gooch & Housego (G&H) manufactures precision optical components. The company's products are designed primarily for use in light measurement instrumentation and crystal manufacturing. It was founded in 1948 to make precision glass and crystalline materials; it still makes precision optics, such as coatings, lenses, prisms, and mirrors. G&H also offers acousto-optic devices, such as frequency shifters, tunable filters, fiber-coupled modulators, and standard and custom Q-switches. In 2007 G&H acquired SIFAM Fibre Optics for £5 million. The next year it bought the assets and business of General Optics from GSI Group for $21 million. Gooch & Housego PLC company does much of its business in North America.

Greenwoods Communications Ltd. company was founded in 1989 by CEO John Greenwood. Greenwoods Communications distributes communications products for both wired and wireless networks and provides related network development services. The company sells such products as connectors, cable, cabinets, communications equipment, and tools. It deals in brands from such vendors as Nortel, Porta Systems, and Radiall. The company's services include outsourced site building, project and facilities management, network design, and testing. Greenwoods serves equipment manufacturers, communications service providers, and cable television broadcasters.

H3C Technologies Co., Limited (H3C), a wholly owned subsidiary of Hewlett-Packard Company (NYSE: HPQ), is a leading global supplier of IP-based products and solutions. With principal operations in Hangzhou, China, H3C employs 4,800 people worldwide. To maintain a level of innovation and technical excellence, H3C operates advanced R&D facilities in Beijing, Hangzhou and Shenzhen in China; invests more than 15 percent of revenues back into R&D every year and has more than half of the workforce engaged in research and development. Till now, it has applied for more than 2,800 patents, 85% of which are original invention patents. Reflecting the future trends of “open and convergence”, H3C initiated the IToIP architecture concept, which aims to build a converged network infrastructure integrating networking, security, storage and multimedia communication, so as to enable service-oriented applications for customers. Guided by innovative IToIP architecture, H3C built a full series of IP products and solutions, including routers, LAN switches, network security, WLAN, IP multimedia, intelligent management software etc. It has successfully transformed from a networking vendor to a total IToIP solution provider, and has built a strong footprint in one of the world’s most dynamic markets. Currently, H3C holds the No.1 position in China’s enterprise networking market.Together with its parent company HP, H3C has secured the No.2 position in the global networking market. In addition, H3C’s video surveillance system has become the No.1 choice for China’s nationwide Safe City project, with applications spanning across more than 160 cities. H3C sells its products and solutions through more than 3,300 channel partners in Greater China. The company also has a high-caliber direct touch sales team, working closely with partners to explore the potential of H3C solutions for its customers. In the rest of world, H3C leverages HP's global resources to sell H3C products and solutions to the worldwide customers.

Hamamatsu Photonics designs and builds optical and electronic components used by manufactures of high-tech and industrial machinery. The company divides its business into two main units. Its optoelectronic devices business produces electron tubes, imaging devices, light sources, and solid- state components used in the production of communications devices, industrial automation equipment, and radiological gear. Hamamatsu's imaging and measuring instruments division makes image processing and analysis products such as cameras and optical microscopes used by semiconductor manufacturing and pharmaceutical research firms. Hamamatsu Photonics K.K. company operates in Asia, Europe, and North America through subsidiaries.

Harmonic Inc. designs, manufactures, and sells video products and system solutions that enable service providers to deliver broadcast and on-demand services. Its broadcast and on-demand services include high-definition television, video-on-demand, network personal video recording, and time- shifted TV. Harmonic Inc. company offers video processing products, including broadcast encoders, contribution and distribution encoders, stream processing and statistical multiplexing solutions, and decoders and descramblers. It also offers management and control software products that consist of NMX Digital Service Manager that gives service providers the ability to control and visually monitor their digital video infrastructure at an aggregate level; and NETWatch management system, which operates in broadband networks to capture measurement data and enables the broadband service operator to monitor and control the hybrid fiber-coax transmission network from a master headend or remote locations. In addition, Harmonic Inc. company provides content management software that comprise CLEARCut storage encoding and CarbonCoder software, which facilitate the creation of multi-format video for Internet, mobile, and broadcast applications; ProStream 8000 solution that allows operators to present on-screen mosaics with various channels tiled within a single video stream; and Armada and Streamliner products for the management of an operator’s video-on-demand assets and the distribution of these assets to subscribers. Further, it offers edge and access products, such as edge products, optical transmitters and amplifiers, and optical nodes and return path equipment. Further, the company provides consulting, implementation, and integration services. It sells and markets its products through direct sales force, independent distributors, and integrators to various broadband communications companies primarily in the United States. Harmonic Inc. company was founded in 1988 and is headquartered in Sunnyvale, California.

Harris Corporation, together with its subsidiaries, operates as a communications and information technology company that serves government and commercial markets worldwide. It operates in three segments: RF Communications, Government Communications Systems, and Broadcast Communications. The RF Communications segment designs, develops, and manufactures secure radio communications products and systems for manpack, handheld, soldier-worn, vehicular, strategic fixed- site, and shipboard applications that operate in various radio frequency bands. It also offers products and solutions ranging from wireless network infrastructure solutions to portable and mobile single-band and multiband radios, and public safety-grade broadband video and data solutions for the public safety, federal, utility, commercial, and transportation markets. The Government Communications Systems segment develops, supplies, and integrates communications and information processing products, systems, and networks for aerospace, terrestrial, and maritime applications supporting department of defense missions. This segment also provides mission-critical communications and information processing systems for the U.S. civilian Federal market, as well as offers IT transformation, managed, and information assurance solutions. The Broadcast Communications segment provides workflow, infrastructure, and networking solutions that enable media companies to streamline workflow from production through transmission; media solutions to manage digital media workflow through software solutions for advertising, media management, digital signage, broadband, digital asset management, and play-out automation; and transmission systems for delivery of media over wireless broadcast terrestrial networks. The company also offers healthcare IT solutions, IT compliance solutions, and mission-critical managed satellite communications services. Harris Corporation was founded in 1895 and is based in Melbourne, Florida.

Hatteras Networks Inc. company is backed by venture firms Columbia Capital, ComVentures, Globespan, and Grotech. Named for the lighthouse at Cape Hatteras, North Carolina, Hatteras Networks makes telecommunications switching equipment for service providers that enables delivery of broadband Ethernet services. The company's products are used in the "last mile" of a communications network, from a provider's local switching facility to the end user and designed to reduce the need for expensive fiber-optic installations. Hatteras has served such network operators as Expedient Communications and Atlantic Telephone, as well as financial services providers including CTS Strategic Investments.

Hemisphere GPS designs and manufactures commercial and industrial global positioning systems. Its GPS products include navigational guidance systems and receiver modules. Hemisphere GPS's Ground Agriculture Group designs and manufactures products for precision farming and agriculture (enabling precision spraying of crops and navigation of machinery in fields), while its Air Agriculture Group specializes in the design and manufacture of GPS products for farmers, forestry workers, and firefighters. Hemisphere GPS company also offers specialty products through its Precision GPS Guidance Group, including DGPS integrated receivers, GPS compasses, antennas, and OEM modules.

HF Company may not necessarily be sending you signals, but it sure hopes you receive them. For businesses, the firm designs and markets signal processing equipment for high- speed network access. For individual customers, it makes equipment for terrestrial and satellite TV reception (cables, plugs, connectors, amplifiers, antennas); digital peripheries to interconnect TV, HiFi, and IT equipment (cables, connectors, interface boxes, wireless boxes); and security products (alarms, intercoms, automatic door devices). Nearly two-thirds of its annual sales come from France. Chairman and managing director Yves Bouget formed HF company in 1988 and controls a nearly 20% stake.

Hitachi Communication Technologies America, Inc company is developing fourth-generation (4G) wireless networking equipment using the Long Term Evolution (LTE) industry standard. Lighting up long-distance networks, Hitachi Communication Technologies America (HCTA) was formed in the 2009 merger of Hitachi Telecom (USA) and Salira Systems. The company, a subsidiary of Hitachi America, makes telecommunications equipment sold in North America. HCTA offers the AMN and Salira lines of fiber-optic transport systems used to enable data transmission and manage bandwidth on optical networks. Its equipment is used by cable multiple-system operators (MSOs), municipalities, telecom carriers, and utilities.

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