Infinera Corporation is a vertically integrated manufacturer of long-haul Wavelength division multiplexing (WDM) optical transmission equipment for the telecommunications service provider market. It was a pioneer in design and manufacture of large scale photonic integrated circuits (PICs).

Headquartered in Sunnyvale, California, the company sells data communications equipment to network operators building the global infrastructure that underpins the Internet. The company’s systems can send large amounts of data on optical fiber cables.

Infinera has pioneered design and manufacture of large scale photonic integrated circuits (PICs). Over 300 patents have been filed by Infinera in fields including optical transport and virtualization of optical bandwidth.

In March 2011, Infinera announced "500,000 hours of failure free operation worldwide". The company claims that its PIC technology has never failed in a customer network.

The production efficiency of using monolithic integration with PIC has permitted Infinera to build large super-channel cards with capacity of 500 gigabit/second. In 2015, it announced Facebook had deployed an Infinera Intelligent Transport Network to light the world's longest terrestrial optical network route (3,998km), capable of delivering up to eight terabits per second of data transmission capacity (equivalent to streaming one million high-def videos simultaneously).

This large throughput may be in excess of actual carrier requirements. Infinera has changed its business model to permit purchase of a 500 Gbit/s. line card by a carrier, but only switch on capacity in 100 Gb/second units of capacity. The company refers to this pricing model as "Cashflow-Efficient Instant Bandwidth" and has trademarked the term. The company's technology road map projects linecards' throughput to scale to 4 terabit and beyond.