Optical Modulator Patent Landscape 2026
Optical Modulator Patent Landscape in 2026
The optical modulator IP field is dominated by a tight group of Japanese telecoms and photonics specialists, with Fujitsu, NTT, and Sumitomo Osaka Cement holding the top three positions and the field’s center of gravity firmly in G02F (optical control and modulation). Annual filing volume peaked in 2019 and has since eased, placing the technology in a consolidation phase where incumbent depth matters more than new entrant momentum.
Fujitsu and NTT lead a concentrated Japanese-dominated field
Fujitsu Ltd holds the top position in the applicant ranking, followed closely by Nippon Telegraph & Telephone Corp and Sumitomo Osaka Cement Co Ltd — three entities whose cumulative depth illustrates how concentrated this field is at the top. The top five filers collectively account for 29% of the combined output of the hundred largest filers.
The leading quartet — Fujitsu, NTT, Sumitomo Osaka Cement, and NEC Corp — are separated by relatively narrow margins at the top, suggesting a genuine contest among peer-level incumbents rather than a single runaway leader. Mitsubishi Electric Corp and Canon KK form a clear second tier, with Seiko Epson Corp and Cisco Technology Inc trailing at the next step.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Fujitsu Ltd | 1,701 | |
| 2 | NIPPON TELEGRAPH & TELEPHONE CORP | 1,671 | |
| 3 | Sumitomo Osaka Cement Co Ltd | 1,455 | |
| 4 | NEC Corporation | 1,422 | |
| 5 | Mitsubishi Electric Corporation | 767 | |
| 6 | Canon Inc | 761 | |
| 7 | Seiko Epson Corporation | 608 | |
| 8 | Cisco Technology Inc | 589 | |
| 9 | Samsung Electronics Co Ltd | 570 | |
| 10 | Sumitomo Electric Industries Ltd | 526 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Fujitsu Optical Components Ltd | 472 | |
| 12 | Panasonic Holdings Corporation | 454 | |
| 13 | Huawei Technologies Co Ltd | 423 | |
| 14 | NGK Insulators Ltd | 384 | |
| 15 | Hitachi Ltd | 378 | |
| 16 | Intel Corporation | 344 | |
| 17 | California Institute of Technology | 329 | |
| 18 | NAT INST OF INFORMATION & COMM TECH | 316 | |
| 19 | Anritsu Corporation | 301 | |
| 20 | Sony Group Corporation | 284 |
This concentration implies that freedom-to-operate analysis, licensing discussions, and standard-essential patent considerations in optical modulation will almost certainly involve Japanese corporate filers. New entrants must either design around dense G02F-anchored portfolios or target adjacent branches where incumbent coverage thins.
Figures for 2023–2025 are subject to publication lag and likely undercount actual activity; the apparent step-down in recent years should not be read as an acceleration of decline. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2019 peak followed by easing volume; G02F dominates the technology mix
The filing trend and technology composition charts together reveal a maturing field: annual activity crested in 2019 and has moderated since, while the IPC mix shows a core cluster in optical and photonic classes surrounding a sparse periphery of adjacent application domains.
Annual filing trend
Filings climbed to a 2019 peak before stepping down across subsequent years. The 2023–2025 bars are suppressed by publication lag and will fill in as applications publish; interpret them as lower bounds, not confirmed declines. The multi-year trend still reflects a field past its fastest-growth phase.
↗ Hover for values · click a bar to ask EurekaTechnology composition
G02F (optical control and modulation) is the dominant class by a wide margin, followed by G02B (optical elements and systems) and H01S (lasers and stimulated emission). Transmission-related classes H04B and H04J appear at meaningful but lower volumes, while classes such as H04N, G03B, G01J, and G01N each represent a small fraction of total records — signaling adjacencies that remain relatively sparse.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Comb generating optical cavity that includes an op…
A low-loss comb-generating optical cavity including an optical amplifier and a microwave-driven electro-optic modulator crystal, produces a comb of optical frequency sidebands having spectral lines equally spaced around the frequency of an input laser beam incident on the comb-generating cavity. The comb-generating cavity includes an input mirror movable… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Method and apparatus for optical imaging with mean… | 1,985 |
| 2 | Deformable mirror light modulator | 1,167 |
| 3 | Ultra-high resolution scanning fiber display | 702 |
| 4 | Nanocomposite materials with engineered properties | 601 |
| 5 | Optical fiber scanner for performing multimodal op… | 469 |
| 6 | Optical device and virtual image display device | 449 |
| 7 | Chiral smectic liquid crystal optical modulators h… | 439 |
| 8 | Display panel with electrically-controlled wavegui… | 396 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment decisions
Four structural dimensions — lifecycle stage, incumbent concentration, co-development activity, and geographic coverage — each carry distinct implications for teams deciding where to place bets in optical modulator technology.
Past-peak: consolidation, not collapse
The lifecycle evidence places optical modulator IP in a Decline stage, with annual filings easing back from the 2019 peak. This does not signal abandonment — it signals that foundational architecture patents are largely filed and the frontier has shifted toward integration and systems-level optimization. R&D teams should expect thickening prior art in core G02F claims and prioritize differentiation in subsystem design or novel material platforms.
Lifecycle: DeclineTop five hold 29% of the leading-hundred share
The top five filers account for 29% of the combined patent records among the hundred largest filers, a meaningful concentration for a field spanning broad photonic physics. All five leaders show declining recent momentum (ranging from –27% to -75% versus their prior three-year base), indicating that even incumbents are pulling back new filing rates. Challengers willing to invest in adjacent branches could gain relative position without a direct head-to-head contest in the saturated G02F core.
Concentration: HighNTT–NTT Electronics and Fujitsu–PETRA are the most active co-filing pairs
The most active co-development pair is Nippon Telegraph & Telephone Corp with NTT Electronics (28 joint filings), followed by Fujitsu with the Photonics Electronics Technology Research Association (PETRA, 22 filings) and Fujitsu with NEC Corp (18 filings). Samsung Electronics and Gwangju Institute of Science and Technology form the leading cross-sector academic pairing (14 filings). The ecosystem is organized around a small number of deep bilateral relationships rather than broad open consortia.
Ecosystem: BilateralUS filing office leads; Asian originators dominate the applicant list
The United States is the primary filing jurisdiction by patent-record volume, followed by Europe (EPO) and WIPO (PCT). Despite US leadership as a filing destination, the ranked applicant list is dominated by Japanese entities, with Cisco Technology Inc and Samsung Electronics Co Ltd the only non-Japanese names in the top ten. This divergence suggests Japanese originators routinely nationalize into the US market, making US patent exposure essential for anyone designing or selling optical modulator products.
Geography: US-anchoredGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Nippon Telegraph & Telephone Corporation | NTT Electronics Corporation | 28 |
| Fujitsu Ltd | Photonics Electronics Technology Research Association (PETRA) | 22 |
| Fujitsu Ltd | NEC Corporation | 18 |
| Samsung Electronics Co Ltd | Gwangju Institute of Science and Technology | 14 |
| NEC Corporation | Photonics Electronics Technology Research Association (PETRA) | 12 |
| Sumitomo Osaka Cement Co Ltd | National Institute of Information and Communications Technology (NICT) | 10 |
| Fujitsu Ltd | Yokogawa Electric Corporation | 9 |
| Fujitsu Ltd | Sumitomo Electric Device Innovations Inc | 9 |
| Fujitsu Optical Components Ltd | TDK Corporation | 7 |
| Nippon Telegraph & Telephone Corporation | Anritsu Corporation | 6 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Fujitsu and NTT lead by depth; Sumitomo Osaka Cement holds the strongest G02F focus
The top two players are peer-level incumbents whose portfolios span core optical modulation, waveguide systems, and optical transmission. Sumitomo Osaka Cement distinguishes itself with the tightest G02F concentration among the top three, while both leaders show sharply reduced recent filing rates.
Fujitsu Ltd
Fujitsu holds the top position with 1,701 patent records, its portfolio concentrated in G02F 1 (optical control and modulation, 695 records), H04B 10 (optical transmission, 370 records), and G02B 6 (optical fiber and waveguide systems, 312 records). The company is also the most active co-filer, anchoring bilateral relationships with PETRA, NEC, Yokogawa Electric, and Sumitomo Electric Device Innovations. Recent filing momentum is sharply down (▼ -63% versus its prior three-year base), consistent with a field-wide consolidation.
patent records: 1,701Nippon Telegraph & Telephone Corp
NTT ranks second with 1,671 patent records, with its portfolio similarly anchored in G02F 1 (552 records) and G02B 6 (187 records), augmented by H04B 10 transmission coverage (161 records). NTT’s most active co-filing pair is with NTT Electronics (28 filings), reflecting a parent–affiliate model of IP development. Recent filing momentum has declined more steeply than Fujitsu’s (▼ -75%), suggesting the company has shifted emphasis toward portfolio management over new filing volume.
patent records: 1,671| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Fujitsu Ltd | 13 | ▼ -63% |
| Nippon Telegraph & Telephone Corporation | 45 | ▼ -75% |
| Sumitomo Osaka Cement Co Ltd | 78 | ▼ -54% |
| NEC Corporation | 23 | ▼ -45% |
| Mitsubishi Electric Corporation | 19 | ▼ -27% |
| Fujitsu Optical Components Ltd | 68 | ▼ -6% |
| Samsung Electronics Co Ltd | 10 | ▼ -72% |
| NGK Insulators Ltd | 4 | ▼ -73% |
Under-served adjacencies: semiconductor devices and multiplex communication
Relative to the dominant G02F core, several IPC classes appear at noticeably lower coverage in this corpus. Two in particular — H01L (semiconductor devices) and H04J (multiplex communication) — combine sparse filing density with plausible technical linkage to optical modulator performance.
H01L · Semiconductor devices
H01L accounts for a small share of total patent records in the corpus, despite semiconductor-device integration being a foundational enabler of silicon photonic and electro-optic modulator architectures. The relative sparsity may reflect a historical tendency for device-layer IP to be filed under G02F rather than H01L, or it may indicate a genuine gap in device-physics claims. Teams developing monolithic photonic integrated circuits or III-V-on-silicon modulators could find this branch less encumbered than the G02F core, though a targeted freedom-to-operate search is necessary before drawing conclusions.
Search this in Eureka →H04J · Multiplex communication
H04J (multiplex communication, including WDM and coherent multiplexing) represents a comparatively small share of the corpus given that dense-wavelength-division multiplexing is one of the primary deployment contexts for high-speed optical modulators. The sparse coverage in this adjacency could indicate that systems-level multiplexing IP sits in a separate filing corpus or that WDM-specific modulator optimization claims remain underdeveloped. Entrants focused on coherent transceiver integration or space-division multiplexing may find fewer blocking positions here than in the G02F core.
Search this in Eureka →How leaders differ by technology route across G02F, G02B, and H04B
Strength of each leader across the main technology routes.
| Player | G02F 1 · Optical control & modulation | G02B 6 · Optical elements & systems | H01S 5 · Lasers & stimulated emission | H04B 10 · Transmission (general) | H01S 3 · Lasers & stimulated emission |
|---|---|---|---|---|---|
| Fujitsu Ltd | Strong · 695 | Moderate · 312 | Moderate · 162 | Strong · 370 | Emerging · 43 |
| NEC Corporation | Strong · 450 | Strong · 236 | Strong · 237 | Moderate · 216 | Emerging · 33 |
| Nippon Telegraph & Telephone Corporation | Strong · 552 | Moderate · 187 | Moderate · 159 | Moderate · 161 | Emerging · 44 |
| Sumitomo Osaka Cement Co Ltd | Strong · 628 | Moderate · 215 | Absent | Absent | Absent |
| Infinera Corporation | Absent | Strong · 219 | Strong · 166 | Strong · 159 | Moderate · 90 |
| California Institute of Technology | Strong · 207 | Strong · 125 | Moderate · 58 | Moderate · 67 | Moderate · 68 |
| Mitsubishi Electric Corporation | Strong · 233 | Absent | Strong · 151 | Moderate · 91 | Emerging · 36 |
Frequently asked questions
The corpus in scope contains 6,056 patent families. This represents the deduplicated family-level count; individual patent records (including national filings and continuations) number higher and are used for applicant ranking and IPC composition figures.
Fujitsu Ltd holds the top position with 1,701 patent records in the ranking, followed by Nippon Telegraph & Telephone Corp (1,671) and Sumitomo Osaka Cement Co Ltd (1,455). All three are Japanese entities with portfolios concentrated in G02F 1 (optical control and modulation).
Annual filing volume peaked in 2019. The lifecycle evidence describes the field as in a Decline stage, with annual filings easing back from that peak. Note that 2023–2025 figures are suppressed by publication lag and should be treated as lower bounds.
The United States is the leading filing jurisdiction by patent-record volume, followed by Europe (EPO) and WIPO (PCT). Despite the US leading as a destination, the largest applicants are predominantly Japanese, indicating that Japanese originators routinely extend their portfolios into the US market.
G02F (optical control and modulation) is the dominant class by a substantial margin, followed by G02B (optical elements and systems) and H01S (lasers and stimulated emission). Transmission-related classes H04B and H04J appear at meaningful but lower volumes.
The most active bilateral co-filing pair is Nippon Telegraph & Telephone Corp and NTT Electronics (28 joint filings). Fujitsu anchors multiple co-filing relationships, including with PETRA (22 filings), NEC Corp (18 filings), Yokogawa Electric (9 filings), and Sumitomo Electric Device Innovations (9 filings). Samsung Electronics and Gwangju Institute of Science and Technology lead the cross-sector academic pairing with 14 joint filings.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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