Company lists · Data refreshed September 2026
Top 25 Wavelength division multiplexing suppliers worldwide
RevenueBase identified 823 wavelength division multiplexing suppliers worldwide as of September 2026 and tracks 14,650 professional contacts across them, including 3,506 with verified work emails. China is the largest market and Shenzhen the largest hub.
This list covers wavelength division multiplexing suppliers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026. Country and city lists for wavelength division multiplexing suppliers follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest wavelength division multiplexing suppliers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,257 contacts → | ||||
Indirect evidence “Lumentum (NASDAQ: LITE) is a global leader in optical and photonic technologies that power the networks and infrastructure behind AI, cloud computing, and next-generation…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 614 contacts → | ||||
Indirect evidence “A reference for high-capacity optical transport technology and systems, Padtec offers an extensive product portfolio that meets the end-to-end demands - in transmission, optical…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 416 contacts → | ||||
Indirect evidence “Applied Optoelectronics, Inc.| NASDAQ: AAOI AOI is a leading designer and manufacturer of fiber optic networking products.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 285 contacts → | ||||
Indirect evidence “Source Photonics is a leading global provider of innovative and reliable technology that enables communications and data connectivity, in next-generation mobile and fixed-line…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 258 contacts → | ||||
Indirect evidence “Clearfield, Inc.(NASDAQ: CLFD) designs, manufactures, and distributes fiber optic management, protection, and delivery solutions that play a critical role in enabling broadband…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 225 contacts → | ||||
Indirect evidence “Acacia is an optical networking strategy and technology company that empowers cloud and service providers to meet the fast-growing consumer demands for data.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 196 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 177 contacts → | ||||
Indirect evidence “SwissOptic AG is your partner of choice for the entire process chain of OEM optics, from concept to volume production.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 148 contacts → | ||||
Indirect evidence “Cortina Systems, Inc.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 130 contacts → | ||||
Indirect evidence “Hisense Broadband Multimedia Technologies Co, Ltd.(HBMT) is a global leader in the development and manufacturing of broadband optical and multimedia terminals.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 122 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 102 contacts → | ||||
Indirect evidence “SM-OPTICS is company driving innovation in fiber based communication, counting on a proven management and R&D team with 20+ years of experience in the optical domain as well as…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 100 contacts → | ||||
Indirect evidence “Optical Fiber Connectivity TDM & IP/MPLS Solution Provider.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 96 contacts → | ||||
Indirect evidence “DenseLight services the global photonics & Data Centre markets, using its patented Integrated Photonics technology to deliver cost competitive solutions to Sensing and Datacom…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 95 contacts → | ||||
Indirect evidence “InnoLight was founded in 2008, is now a world leader in development of silicon photonics and provide a wide range of high-speed optical solutions for optical communication…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 93 contacts → | ||||
Indirect evidence “Where Light Meets Digital - EFFECT Photonics is a highly vertically integrated, independent photonic optical systems company addressing the need for high-performance, affordable…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 92 contacts → | ||||
Indirect evidence “At indie (Nasdaq: INDI), we empower our customers with best-in-class semiconductor, photonics, software, and system-level technologies designed to drive their success.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 84 contacts → | ||||
Indirect evidence “The world-class team of scientist and engineers at Ranovus is comprised of professionals with a unique combination of decades of expertise in product development of…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 76 contacts → | ||||
Indirect evidence “A FonNet Networks é uma extensão da Precision Optical Technologies, Inc no Brasil, uma das maiores fabricantes de tecnologia de redes ópticas do mundo.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 70 contacts → | ||||
Indirect evidence “iPRONICS has pioneered the field of software-defined photonics.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 69 contacts → | ||||
Indirect evidence “Established in the year 2005 in the city of Riyadh, Amwaj Telecommunication Manufacturing Company (ISO 9001:2008) has the distinction of being first of its kind in the Middle East…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 67 contacts → | ||||
Indirect evidence “Lumiphase builds optical communication chips to help network equipment vendors and cloud providers manage the exploding data traffic.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 65 contacts → | ||||
Indirect evidence “ColorChip brings high speed data transmission to the world’s top mega-datacenters and enterprises.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 61 contacts → | ||||
Indirect evidence “Flexoptix is a telecommunications company based in Darmstadt.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 57 contacts → | ||||
Indirect evidence “Specialist on the Optical and Radio Networking HFR’s technologies and products have been at the forefront of the telecom evolution since Key products are Cellular Coverage…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: wavelength division multiplexing suppliers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names wavelength division multiplexing suppliers.
- Partial evidence
- Its own public description names part of wavelength division multiplexing suppliers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name wavelength division multiplexing suppliers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 823 wavelength division multiplexing suppliers worldwide
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Wavelength division multiplexing suppliers worldwide at a glance
As of Sep 22, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among wavelength division multiplexing suppliers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for wavelength division multiplexing suppliers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “wavelength division multiplexing suppliers”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names wavelength division multiplexing suppliers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among wavelength division multiplexing suppliers, and records with no verified work email.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 3,506 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Wavelength division multiplexing suppliers by location
3 lists · largest firstEvery Wavelength division multiplexing suppliers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names wavelength division multiplexing suppliers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many wavelength division multiplexing suppliers are there worldwide?
RevenueBase identified 823 wavelength division multiplexing suppliers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Lumentum, headquartered in San Jose, tops this list with the largest team on record.
Which country has the most wavelength division multiplexing suppliers?
China leads with 345 companies, followed by the United States (126) and Taiwan (25). Every wavelength division multiplexing suppliers list by country and city is linked on this page.
Which city has the most wavelength division multiplexing suppliers?
Shenzhen leads with 127 headquartered companies, followed by Wuhan (20) and Chengdu (10).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,506 verified decision-maker contacts tracked across these 823 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.