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Coherent optical communication equipment includes semiconductor lasers and photodiodes for optical transceiver modules and board level design, as well as wavelength-tunable lasers and optical receivers for optical coherent communication devices in the backbone systems.

Coherent optical communication involves the following key technologies:

- Polarization multiplexing and higher-order modulation: the orthogonal polarization characteristics and phase information of light are used to divide the original signal into two signals for multiple times, which greatly reduces the electrical-layer processing rate required.

- Coherent receiver technology: a local oscillator laser that has the same frequency as the received signal is used to implement interference between the laser signal and the received signal to restore the amplitude, phase, and polarization state information from the received signal.

- DSP technology: the DSP technology is used to resolve signal distortion and latency problems caused by dispersion at the electrical signal layer. It compensates for PMD and CD, greatly improving the PMD and CD tolerance.

- High-performance FEC algorithm: FEC is used to improve the OSNR tolerance of the system. Different FEC types and overhead ratios can be designed for different rates, modulation formats, and transmission performance requirements.


Huawei Technologies, Ciena, Cisco Systems(Acacia), Nokia, Infinera Corporation, ZTE, NEC Corporation, ADVA Optical Networking, are the key suppliers in the coherent optical communication equipment industry.  The coherent optical communication equipment market is highly concentrated. Huawei Technologies is the largest manufacturer and leads the industry. In 2020, Huawei Technologies held more than 28% sales share in the world. Ciena and Cisco Systems(Acacia) own about 20% and 15% sales share respectively.

The global Coherent Optical Communication Equipment market size was valued at $4033.14 million in 2020, and is projected to reach $16110.86 million by 2026, growing at a CAGR of 24.83% from 2021 to 2026.

Streaming video, cloud computing, the Internet of Things (IoT), and the evolution to 5G are putting massive pressure on today’s networks, requiring capacity increases by orders of magnitude and the ability to respond to even greater unpredictability in traffic patterns. The optical network sits at the heart of communications, interconnecting people, data centers, and an increasing number of devices across any distance, from across the street to across the ocean. Yet, for all the critical functions and agility they need to provide to meet today’s web-scale demands, most networks are weighed down with manual processes and hardware inflexibility. Operators are working to keep up with bandwidth demands by deploying, managing, and sparing different hardware for different areas of the network using cost-optimized solutions per specific application. They select their hardware based on upfront link engineering determined with best-guess fiber characterization data. Lack of network visibility and little hardware flexibility limit network efficiency, forcing operators to operate at suboptimal capacity, leaving revenue on the table and resulting in costly network overbuilds. With the speed at which technology shifts are occurring in the industry, using this operating model is no longer an option. New technologies promise to drive discontinuity in both cost and power reduction. Higher baud rate, programmable, coherent technology can reduce transport costs and put operators within reach of their business goals. 

The 400G segment represented huge market share all-inclusive in 2020. This segment is anticipated to maintain its dominance of market share over the projected time frame. It is expected that in the next few years, 600G & 800G will explode at a rapid compound annual growth rate.


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