Fiber Laser Photonic Integration Patents: Leaders & White Space 2026
- Small, concentrated field. just 20 patent families sit inside the monolithic and all-fiber integration search, with filings led by United States and China receiving offices.
- Filing activity has cooled. the trend peaked at 6 families in 2023 after a flat 2022, with no clear upward momentum among tracked assignees in the latest year.
- Claims cluster in H01S. 19 of 20 records sit in H01S (lasers & stimulated emission) against 7 in G02B, showing the core contest is inside the laser cavity, not the coupling optics.
What the fiber laser photonic integration patent set covers
Fiber laser photonic integration covers architectures that fuse gain fiber, pump coupling and cavity components into a single spliced or monolithic optical path, removing free-space alignment steps from the laser build. The search string ties monolithic fiber laser, all-fiber integration and spliced component integration language to IPC classes for fiber-laser gain media (H01S3/067, H01S3/16) and fiber-optic coupling elements (G02B6/255), so the resulting 20 families are concentrated on structural integration claims rather than broader laser-system patents.
The dataset spans records published from 2015 through the 2026-07-31 cut-off. Because publication typically lags filing by roughly eighteen months, the most recent one to two years of activity will read lower than actual filing volume once later applications publish.
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Filing trend and technology composition
Two views of the same 20-family dataset: how filings moved year over year, and where those filings sit across the IPC classes that define fiber laser integration.
A peak in 2023, then no clear direction
Filings opened at 5 in 2017, dipped to 0 at the 2022 midpoint, then rose to a peak of 6 in 2023 before the partial, still-publishing 2026 count. That shape reads as a small field with sporadic filing bursts rather than sustained investment growth, and the 2022 trough is a genuine gap in the record rather than a data artefact.
H01S dominates; G02B is the supporting class
19 of the 20 records classify under H01S (lasers and stimulated-emission devices), confirming that most claims describe the laser cavity, gain fiber or pump scheme itself. Only 7 records also carry a G02B optical-elements classification, meaning fewer than half the families claim the fiber-optic coupling or splicing hardware separately from the laser architecture.
Shares are the percentage of the 20 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Fiber Laser Photonic Integration with Eureka
This page is one run against one query. Ask Eureka your own question about fiber laser photonic integration and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited and most representative filings
US20240146014A1 — Hundred-kilowatts-level monolithic fiber laser based on auxiliary lasers and hybrid cladding pumping scheme
Filed by Tianjin University, this application couples multi-wavelength auxiliary lasers alongside a signal laser into the core of a single gain fiber under hybrid cladding pumping. Gain competition along the fiber suppresses signal amplification at the front segment and concentrates it at the rear segment, a staged-gain approach aimed at scaling monolithic fiber laser output toward the hundred-kilowatt class without adding free-space stages.Published 2024-05-02.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5566196A | Multiple core fiber laser and optical amplifier | 460 |
| 2 | US20170343729A1 | Monolithic visible wavelength fiber laser | 19 |
| 3 | CN102496842A | 高重频锁模光纤激光器 | 12 |
| 4 | CN113131317A | 基于单模双偏芯结构的可调谐锁模光纤激光器及控制方法 | 8 |
| 5 | WO2017189962A1 | Monolithic visible wavelength fiber laser | 8 |
| 6 | CN110635346A | 一种环型腔1.7um掺铥全光纤激光器 | 7 |
| 7 | CN115986541A | 一种2.8μm和3.5μm双波长中红外光纤激光器 | 3 |
| 8 | US20210181417A1 | Mid-infrared optical fibers with enhanced oh-diffusion resistance | 2 |
| 9 | US20240146014A1 | Hundred-kilowatts-level monolithic fiber laser based on auxiliary lasers and hybrid cladding pumping scheme | 1 |
| 10 | US20240275120A1 | 2.8 micrometer and 3.5 micrometer dual-wavelength mid-infraredfiber laser | 1 |
Citation counts reflect a searched corpus skewed toward older filings; treat them as a signal of past influence, not current filing activity.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
Three patterns stand out once the family counts, IPC split and receiving-office mix are read together.
A narrow, specialist field
With only 20 patent families across the entire 2015–2026 window, fiber laser photonic integration is a niche relative to the broader fiber-laser art. That narrowness cuts both ways: freedom-to-operate searches are tractable, but any single well-drafted family can dominate a sub-claim.
US-first filing pattern with a China contingent
United States receiving-office filings outnumber China roughly two to one, with smaller counts at the EPO, India and via WIPO/PCT. That skew suggests the commercially defended claim territory is still primarily US-anchored, with China as the clear secondary jurisdiction to monitor.
Cavity and gain-fiber claims outweigh coupling claims
The gap between H01S and G02B classification counts indicates that most applicants are claiming what happens inside the laser cavity — gain fiber design, pumping scheme, mode-locking — rather than the splice or coupling hardware that physically integrates the fiber path.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to fiber laser photonic integration, with the prior art for and against each one.
Who is filing, and where momentum has stalled
The assignee list is a long tail: universities, a handful of laser specialists and no single entity with an obvious recent-year filing lead. Momentum tracking shows the tracked assignees at zero filings in the latest year, consistent with the flat overall 2022–2026 trend.
Universities hold a visible share, but activity has paused
Institutions including Tianjin University, Université Laval, Changchun University of Science and Technology, and the Shanghai Institute of Optics and Fine Mechanics appear in the assignee set. None show filings in the latest tracked year, matching the dataset's flat post-2022 trend rather than any single organisation withdrawing.
Commercial specialists show the same pause as academia
Named commercial assignees such as nLIGHT and Lumentum Operations sit in the same zero-filing latest-year bucket as the university filers, with one assignee (the India-based Institute of Technology Hyderabad) recording a -100% year-over-year change. There is no assignee currently showing positive filing momentum in this dataset.
One legacy patent anchors the citation table
US5566196A, a multiple-core fiber laser and optical amplifier patent, carries far more citations than any other record in the set. That gap reflects its age and foundational subject matter rather than current relevance — newer entrants should read it for freedom-to-operate history, not as a gauge of active competitive pressure.
| Assignee | Recent year | YoY |
|---|---|---|
| nLIGHT, Inc. | 0 | — |
| Tianjin University | 0 | — |
| Université Laval | 0 | — |
| Changchun University of Science and Technology | 0 | — |
| Institute of Technology Hyderabad | 0 | -100% |
| Lumentum Operations LLC | 0 | — |
| Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences | 0 | — |
| SDL, Inc. | 0 | — |
Where to take this analysis
The dataset points to a narrow field with concentrated cavity claims and a stalled filing trend — three directions worth following up.
Run a freedom-to-operate check on cladding-pumping claims
With H01S claims outnumbering G02B claims nearly three to one, a new entrant's biggest exposure is likely inside gain-fiber and pumping-scheme claims rather than coupling hardware. Map any planned design against the H01S-classified families first.
Explore in Patsnap EurekaWatch China filings for a possible second wave
China's 5 receiving-office filings against the US's 11 suggest the jurisdiction is still building out coverage. A flat 2022–2026 global trend combined with publication lag means a China-driven uptick could surface once 2025–2026 filings finish publishing.
Explore in Patsnap EurekaDraft around the under-claimed coupling branches
Fiber-integrated combiners, splice-based mode-locking and all-fiber polarization control remain thin in this dataset relative to core cavity claims, making them a plausible place to file a defensible first claim.
Explore in Patsnap EurekaCommon questions about fiber laser photonic integration patents
This dataset tracks 20 patent families published between 2015 and the 2026-07-31 cut-off, matched on monolithic and all-fiber integration language combined with IPC classes covering fiber-laser gain media and fiber-optic coupling elements. That is a small, specialist field compared with fiber-laser patenting broadly. Because publication lags filing by roughly eighteen months, the true count for 2025 and 2026 filings will rise as more applications publish.
The assignee list is a long tail of universities and specialist laser companies rather than one dominant filer, including Tianjin University, Université Laval, Changchun University of Science and Technology, nLIGHT, and Lumentum Operations. None of the tracked assignees show filings in the most recent year, and one, the Institute of Technology Hyderabad, recorded a -100% year-over-year change. That pattern suggests the field currently lacks an assignee with clear filing momentum.
US20240146014A1, assigned to Tianjin University and published 2024-05-02, describes a monolithic fiber laser architecture aimed at hundred-kilowatt-class output. It couples multi-wavelength auxiliary lasers together with a signal laser into a single gain fiber core under hybrid cladding pumping, using gain competition along the fiber length to suppress amplification at the front segment and concentrate it at the rear segment. Anyone designing a staged-gain monolithic fiber laser at comparable power levels should read this filing's claim scope carefully before finalizing an architecture.
The clearest gap sits in the fiber-optic coupling and splicing side of the field: only 7 of 20 records carry a G02B optical-elements classification against 19 in H01S, meaning cavity and gain-fiber claims dominate while coupling-hardware claims are comparatively thin. Sub-areas such as fiber-integrated pump/signal combiners, spliced mode-locking components, and all-fiber polarization control show limited direct claim coverage in this dataset. A first claim in these areas would likely center on the physical splice or combiner structure rather than the laser cavity itself.
The dataset shows a trough at the 2022 midpoint before recovering to a peak of 6 families in 2023, a pattern consistent with a small field where filing activity comes in sporadic bursts rather than steady annual growth. With only 20 total families across more than a decade, a handful of applicants pausing or restructuring their filing strategy can visibly move the year-over-year trend line. Readers should treat the 2022 dip as a real feature of this narrow dataset rather than assume broader industry retrenchment.
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.