On March 11, 2026, Ciena Corporation and Quantum Computing Inc. announced a joint demonstration of quantum-secured communications at OFC 2026, showcasing high-speed encryption using post-quantum cryptography (PQC) and quantum key distribution (QKD). The demonstration reflects growing efforts to strengthen the security of optical communication networks as data transmission increases and emerging quantum computing capabilities challenge existing encryption methods.
Ciena’s optical networking technology
Ciena develops networking technologies that enable the transmission of large volumes of data across fiber-optic communication networks. Its hardware, software, and services are widely used by telecommunications providers, cloud operators, and enterprises to support modern internet infrastructure.
A core part of its portfolio is optical transport networking, which uses light signals transmitted through fiber-optic cables to carry digital information across long distances. Compared with traditional electrical transmission, optical systems support significantly higher data capacity and form a key component of global communications networks.
The company also develops network infrastructure equipment, such as the 6500 Packet-Optical Platform, that help manage and route traffic across complex communication systems. As demand continues to grow, these systems must maintain high performance and reliability, driving innovation in hardware design and cooling technologies.
Another area of development involves monitoring technologies for fiber-optic networks. Platforms such as Navigator Network Control Suite provide visibility and analytics for optical networks. By analyzing characteristics of signals traveling through optical fibers, operators can detect disturbances or faults along the cable, supporting network monitoring, maintenance, and reliability.
Acquisition of Nubis Communications
On September 22, 2025, the company announced its $270 million acquisition deal of Nubis Communications, a developer of high-speed optical interconnect technologies for artificial intelligence (AI) data centers. The transaction, finalized on October 7, supports the company’s expansion into high-capacity data-center networking and next-generation infrastructure.
Nubis develops silicon photonics-based optical interconnect solutions that enable fast and energy-efficient communication between chips and servers within hyperscale data centers. As AI training and inference workloads scale rapidly, demand for high-bandwidth, low-latency connectivity between computing components has increased significantly, particularly for cloud providers and data center operators.
Through the acquisition, Ciena adds data center interconnect capabilities into its optical networking portfolio, which supports high-speed and efficient connectivity in AI-driven data center environments.
Ciena: Patenting Activity
Ciena’s patent filings surged in the late 2010s, reflecting active innovation in optical networking technologies as cloud computing and data center infrastructure expanded. This trend aligned with the rapid growth of hyperscale networks in the mid-2010s, as large-scale cloud providers scaled their infrastructure to meet rising data demand. By 2018, spending on optical hardware by cloud operators had risen by nearly 50% year-over-year, exceeding $1 billion, highlighting strong investment in high-speed network infrastructure.Highest recorded filings was around 2020-2021, during a period of continued innovation in optical networking technologies at Ciena. Following its introduction in 2019, WaveLogic 5 was deployed across multiple platforms in 2020, including the Waveserver and 6500 systems, with continued enhancements and integration into Ciena’s broader optical networking solutions. In 2021, Ciena further expanded its 400G/800G deployments, reaching over 140 customers globally and shipping approximately 25,000 modem units. These developments highlight the growing scale of high-capacity optical networks supporting cloud and data center infrastructure.
Ciena: Top Technology Areas
Ciena Corporation’s patent filings are primarily concentrated in digital information transmission (H04L) and signal transmission technologies (H04B), reflecting its core focus on high-capacity networking and optical communication systems. This is followed by multiplex communication (H04J) and optical technologies (G02B), which support the efficient transport and management of large volumes of data across fiber networks.
Additional filings in selecting arrangements (H04Q), electric digital data processing (G06F), and electronic hardware design (H05K) highlight the company’s work in building reliable networking platforms. Beyond these areas, Ciena’s patents also extend to network hardware design, data encoding technologies, and advanced control systems that support the performance and scalability of modern communication infrastructure.
Ciena: Top Law Firms
Ciena relies on a diverse network of intellectual property law firms to manage and prosecute its patent filings. Among these, Clements Bernard Walker and Baratta Law represent a majority of the company’s U.S. patent activity, indicating a central role in supporting Ciena’s protection of its networking and communications technologies.
Several other firms also contribute to the company’s patent prosecution efforts, with Young Basile Hanlon & MacFarlane PC and Integral IP accounting for a notable portion of Ciena’s filings. In particular, patent lawyers Miriam Paton and Amy Scouten represented the majority of patent filings handled by Integral IP. Additional filings are handled by the firms Guntin & Gust PLC and Osha Bergman Watanabe & Burton LLP (former Osha Liang LLP), illustrating Ciena’s use of multiple legal partners to support patent activity across different technical areas and jurisdictions.
The innovations shaping Ciena’s intelligent networks
Ciena develops technologies that help modern networks run faster, smarter, and more efficiently. As global data traffic grows and network infrastructure becomes more complex, new approaches are needed to improve flexibility, reliability, and operational efficiency. The following patents highlight Ciena’s innovations in network architecture, hardware design, and optical networking, showcasing technologies that support more intelligent and resilient communication systems.
Vibration sensing through optical polarization
U.S. Patent No. 11,777,598 introduces a method for detecting vibrations in optical fiber networks by analyzing changes in the polarization of transmitted light using machine learning techniques. By leveraging signal measurements already captured in modern optical systems, the approach enables communication infrastructure to also function as a large-scale sensing system.
As optical networks continue to expand, maintaining their reliability becomes increasingly important. However, detecting physical disturbances such as vibrations remains challenging. Traditional monitoring approaches are often reactive, relying on manual inspection or simple threshold-based alerts after failures occur. In many cases, identifying the root cause requires additional tools or expert analysis, making the process time-consuming and difficult to scale.
In response to these limitations, the system leverages data already available within the network. Instead of relying on external sensors, it analyzes changes in the polarization of light traveling through optical fibers. These changes are processed using machine learning to identify patterns associated with vibrations or other external events. By transforming routine transmission data into a source of environmental insight, the system enables continuous and automated monitoring of fiber conditions. This allows operators to detect potential issues earlier and reduce reliance on manual diagnostics, improving overall network reliability.
The patent, titled “Utilizing polarization characteristics to detect vibrations in optical fibers”, was filed on May 17, 2022, and granted on October 3, 2022. The inventors are Maryam Amiri, Ivan Radovic, Petar Djukic, and Firouzeh Golaghazadeh. Representation was provided by Lawrence Baratta of Baratta Law PLLC.
Dynamic transport architecture for energy-efficient network routing
U.S. Patent No. 12,498,777 introduces a dynamic transport architecture that evaluates power usage across network elements to help operators route services more efficiently while reducing energy consumption and environmental impact.
Large-scale networks today often span multiple domains, from terrestrial fiber to submarine cables and edge networks. Traditional routing systems primarily focus on speed or capacity, leaving energy consumption largely unaddressed. This makes it difficult for providers to optimize networks for both cost and sustainability, especially as data demand continues to grow.
To address this, the patented approach collects power-related metrics from network components and evaluates multiple candidate routes for end-to-end services. Routes can then be selected based on their energy characteristics, enabling more efficient use of network resources without compromising performance. By incorporating energy awareness into routing decisions, the architecture improves operational flexibility while supporting more sustainable network management.
The patent, titled “Dynamic transport architecture for supporting flexible, open, intelligent, and power efficient edge-to-edge services across network domains”, was filed on February 1, 2024, and granted on December 16, 2025. The inventors of the patent are Richard Norris and David Boertjes, and the filing was represented by Kenneth Kwan of Guntin & Gust PLC.
Hybrid air-liquid cooling for network equipment
U.S. Patent No. 12,543,295 introduces a hybrid air and liquid cooling design that improves heat management in high-performance network equipment while allowing existing air-cooled systems to be upgraded with minimal structural changes.
As modern routers and switches support increasing data speeds and higher port densities, the components inside them, particularly high-power optical modules, generate significantly more heat. Traditional air-cooling systems that rely on fans can struggle to manage these rising thermal demands, while fully liquid-cooled designs often require major hardware redesigns. This creates a challenge for operators seeking better cooling without replacing entire systems.
The patented approach addresses this by combining airflow with targeted liquid cooling. A coolant distribution manifold directs liquid to cold plates attached to the hottest components, removing heat more efficiently. Designed to fit into spaces typically occupied by fan modules, the system allows conventional air-cooled network elements to be converted into hybrid cooling systems, improving thermal performance while preserving compatibility with existing hardware architectures.
The patent, titled “Hybrid air/liquid-cooled network element, coolant distribution manifold box for use in a hybrid air/liquid-cooled network element, and method for converting an air-cooled network element to a hybrid air/liquid-cooled network element”, was filed on October 10, 2023, and granted on February 3, 2026. The inventors are Behzad Mohajer, Terence Graham, Peter Ajersch, Bonnie Mack, Marko Nicolici, Michael Bishop, Kamran Rahmani, Simon Shearman, and Daniel Rivaud. Representation was provided by Christopher Bernard of Clements Bernard Walker PLLC.