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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/coherent-pluggable-optics-for-data-center-interconnect-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Optical CommunicationsCoherent Pluggable Optics for Data Center Interconnect Patents
- Filing activity peaked in 2019 at 18 records and has not returned to that level since, with the midpoint year 2022 sitting at just 5 — a flat-to-declining trend rather than a growing one.
- One assignee dominates a four-name ranking with 36 of the credited records, leaving the remaining three entrants to split a small residual — a leader-and-long-tail structure, not a competitive field.
- Filing is concentrated in transmission and digital-transmission classes H04B and H04L together cover the large majority of the 39 records in scope, while switching (H04Q) and optical elements (G02B) barely register.
39
Published Records
-40%
Filing Growth 2021→2024
US
Leading Jurisdiction
2019
Peak Filing Year
Filing growth compares 2021 (5 records) with 2024 (3) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What this landscape covers
This dataset tracks patent filings at the intersection of coherent optics and pluggable transceiver architectures aimed at data center interconnect, using a search string anchored on full-duplex coherent optics, tunable laser linewidth, carrier phase recovery and coexistence with direct-detection systems. The scope spans 2015 to the 2026-07-31 cut-off and returns 39 published records, each mapped to one or more IPC subclasses.
Because publication lags filing by roughly 18 months, the most recent one or two years in the trend understate real activity. The filing pattern here should be read as a mature but narrow niche: a small number of active filers, a peak already behind it, and technology classes that cluster tightly around signal transmission rather than spreading into adjacent optical hardware.
Filing activity and technology composition, 2015–2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Coherent Pluggable Optics for Data Center Interconnect covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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The data
Filing trend and technology composition
Two views of the same 39-record dataset: how filing activity has moved year over year, and which IPC subclasses the claims fall under.
A peak already past
Filings rose to 18 in 2019, the high point of the series, then fell back; by the 2022 midpoint the annual count was down to 5, and the trend into the most recent years shows no rebound — consistent with a technology area where the core claim space was staked out early.
Transmission-class concentration
H04B (transmission, general) appears in 92.3% of the 39 records and H04L (digital information transmission) in 76.9%, so nearly every filing touches one or both. H04J (multiplex communication) appears in 38.5% of records, while H04Q (switching) and G02B (optical elements) each cover a small minority — 7.7% and 2.6% respectively.
Shares are the percentage of the 39 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Coherent Pluggable Optics for Data Center Interconnect covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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Most-cited records and a representative filing
Representative filing
US11716164B1 — Systems and methods for full duplex coherent optics
CABLE TELEVISION LABORATORIES, INC.
A full duplex communication network includes an optical transmitter end having a first coherent optics transceiver, an optical receiver end having a second coherent optics transceiver, and an optical transport medium operably coupling the first coherent optics transceiver to the second coherent optics transceiver. The first coherent optics transceiver is configured to simultaneously transmit a downstream optical signal and receive an upstream optical signal, while the second transceiver simultaneously receives that downstream signal and transmits the upstream signal back.Filed by Cable Television Laboratories, Inc. (2023-08-01); abstract trimmed for length.
Highest-cited records in scope
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20200076508A1 | Systems and methods for full duplex coherent optics | 64 |
| 2 | US20190305854A1 | Systems and methods for coherent optics in an access network | 63 |
| 3 | US20190181952A1 | Systems and methods for full duplex coherent optics | 24 |
| 4 | US20190149245A1 | Systems and methods for coherent optics interface | 14 |
| 5 | US10917175B2 | Systems and methods for full duplex coherent optics | 8 |
| 6 | US20200044765A1 | Systems and methods for full duplex coherent optics | 6 |
| 7 | US20190069055A1 | Systems and methods for coherent optics ranging and sensing | 6 |
| 8 | US11082143B2 | Systems and methods for full duplex coherent optics | 5 |
| 9 | US11716164B1 | Systems and methods for full duplex coherent optics | 4 |
| 10 | US20210167857A1 | Systems and methods for full duplex coherent optics | 4 |
Citation counts favour older records in a searched corpus; treat them as a signal of influence within this dataset, not as a ranking of present-day importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Coherent Pluggable Optics for Data Center Interconnect covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers mean for a filing decision
Three findings that shape where a new filing would sit relative to existing claim space.
Filing momentum
Peak 2019: 18 records
annual filings
The active filing window has closed, not opened
The series peaked at 18 records in 2019 and had fallen to 5 by the 2022 midpoint, with no recovery visible in the years since. That pattern points to a technology whose core architecture — full-duplex coherent transceivers for access and interconnect links — was largely staked out in a short window rather than one still being actively contested.
Read against a 39-record total, this is a small, front-loaded field.
Class concentration
92.3% in H04B
of 39 records
Claims cluster on transmission, not on optical hardware
H04B and H04L cover the large majority of records, meaning most claims are written around transmission and digital-signal-processing aspects of coherent optics rather than around the optical components themselves. G02B, the optical-elements class, appears in only 2.6% of records — a narrow footprint for a topic nominally about optical modules.
Component-level and photonic-integration claims look comparatively open.
Assignee structure
36 of a 4-name ranking
records held by the leader
One filer dominates a short ranking
The assignee ranking for this dataset returns just four names, and the leading entrant is credited with 36 records against a 39-record total in scope. That leaves only a handful of records spread across the other three, including one co-filing pair between a university and a small electronics firm.
This is a leader-and-long-tail structure, not a multi-player race.
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Looking for what nobody has claimed yet?
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to coherent pluggable optics for data center interconnect, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Coherent Pluggable Optics for Data Center Interconnect covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players
Who is filing, and where the momentum sits
The ranking behind this dataset holds only four assignees — read it as the complete set the data endpoint returns for this search, not a top-50 or top-100 cut.
Leader
36 records
of 39 in scope
Cable Television Laboratories holds the bulk of the ranked filings
The representative and most-cited records in this dataset — including the full-duplex coherent optics family — trace to Cable Television Laboratories, whose filings anchor the top of the citation table and account for the great majority of the ranked assignee total.
0 filings in the latest year across the ranking, consistent with the post-2019 slowdown.
Academic co-filer
2 co-filed records
strongest pair in the set
A university-industry pairing is the only notable collaboration
The strongest co-assignee pair in the dataset links a Brazilian university with a small electronics firm, on two co-filed records — the only collaboration pattern visible at this scale.
No other co-filing pairs rise above this level.
Momentum
-100% YoY
leader's latest-year change
All four ranked assignees show zero filings in the latest year
Every assignee in the ranking, including the leader, is credited with zero filings in the most recent year, and the leader's year-over-year change is recorded at -100%. Given the 18-month publication lag, some of this is an artefact of the cut-off date rather than a hard stop in activity.
Treat the latest year as incomplete, not as a closed data point.
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Cable Television Laboratories, Inc. | 0 | — |
| University of Campinas | 0 | — |
| IDEA SYST ELETRONICÔS LTDA SA | 0 | — |
| Ciena Corporation | 0 | -100% |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Coherent Pluggable Optics for Data Center Interconnect covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's next
Where to take this from here
The dataset points to a narrow, front-loaded field with one dominant filer — the next step is deciding whether to file around the dense core or into the gaps.
Map the H04Q and G02B gaps in detail
Switching-layer and optical-element claims cover a small share of records; a closer read of exactly what those filings claim will show whether the gap is real or just under-indexed by this search string.
Explore in EurekaWatch for a post-lag rebound
The zero-filing latest year across all four ranked assignees is consistent with an 18-month publication lag rather than a confirmed stop; re-run this view once more recent filings clear publication.
Track this topic in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Coherent Pluggable Optics for Data Center Interconnect covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions about this landscape
Within this 39-record dataset, the assignee ranking returns only four names, and one filer — Cable Television Laboratories — is credited with 36 of them. Its filings, including the full-duplex coherent optics family, also dominate the most-cited records table. The remaining three assignees in the ranking hold only a handful of records between them, so this is a strongly leader-heavy field rather than one with several comparable competitors.
The trend has already peaked and slowed: filings reached 18 in 2019, the high point of the series, and had fallen to 5 by the 2022 midpoint with no rebound visible since. Because publication typically lags filing by around 18 months, the very latest year in any such dataset will always look lower than it eventually turns out to be, so some caution is warranted on the most recent one or two years specifically. Taken together, the pattern points to a technology whose core architecture was claimed early rather than one still in an active filing race.
Almost all records in this dataset carry an H04B classification (transmission, general) at 92.3% of the 39 records, and most also carry H04L (digital information transmission) at 76.9%. H04J (multiplex communication) appears in 38.5% of records. Switching and selecting (H04Q) and optical elements and systems (G02B) are minority classes, at 7.7% and 2.6% respectively, which suggests claims in this space concentrate on transmission and signal-processing aspects rather than on optical hardware itself.
US11716164B1, assigned to Cable Television Laboratories, describes a full-duplex communication network built around a pair of coherent optics transceivers — one at the transmitter end and one at the receiver end — connected by an optical transport medium. Its distinguishing feature is simultaneous bidirectional operation: each transceiver both transmits and receives on the same link at the same time rather than alternating. Anyone designing a full-duplex coherent link for access or interconnect use should read this family closely, since it sits among the most-cited records in this landscape and anchors the assignee's broader coherent optics portfolio.
The clearest gaps in this dataset sit outside the dense H04B and H04L core: optical elements and systems (G02B) cover only 2.6% of the 39 records, and switching and selecting (H04Q) covers 7.7%, both far below the transmission classes. Sub-areas like tunable laser linewidth reduction, coherent-versus-direct-detection coexistence mechanisms, and photonic integration for pluggable form factors are represented but thin. A first claim in one of these branches would sit on noticeably less prior art than a claim written around general coherent transmission.
Answers are grounded in the same dataset. Derived from a Patsnap search on Coherent Pluggable Optics for Data Center Interconnect covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.