Company lists · Data refreshed October 2026

Top 18 Dense wavelength division multiplexers (dwdm) suppliers worldwide

RevenueBase identified 116 company matches for dense wavelength division multiplexers (dwdm) suppliers worldwide as of October 2026 and tracks 2,194 professional contacts across them, including 363 with verified work emails. Shenzhen is the largest hub.

This list covers company matches for dense wavelength division multiplexers (dwdm) suppliers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 24, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 24, 2026 How this list was built
116Companies
2,194Contacts tracked
363Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 18 largest dense wavelength division multiplexers (dwdm) suppliers worldwide

Ranked by team size
Top 18 of 116 company matches for dense wavelength division multiplexers (dwdm) suppliers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 24, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchCampinas, BrazilHQ recorded Oct 24, 2026501-1,000673 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
2Exact matchDhaka, BangladeshHQ recorded Oct 24, 2026201-500104 contacts →

Exact match

“Optical Fiber Connectivity TDM & IP/MPLS Solution Provider.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
3Exact matchRedmond, WA, United StatesHQ recorded Oct 24, 202611-5057 contacts →

Exact match

“Optical Transport Pioneers by Nature, Partners by Choice.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
4Exact match高雄市前鎮區, TaiwanHQ recorded Oct 24, 2026201-50055 contacts →

Exact match

“Global Fiberoptics Inc.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
5Exact matchGrenoble, FranceHQ recorded Oct 24, 202611-5037 contacts →

Exact match

“Scintil Photonics is the global leader in DWDM laser sources for AI.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
6Exact matchTel Aviv, IsraelHQ recorded Oct 24, 202651-20036 contacts →

Exact match

“PacketLight Networks offers a suite of leading 1U metro and long haul DWDM and OTN devices, as well as Layer-1 optical encryption for transport of data, storage, voice and video…”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
7Exact matchAlmere, NetherlandsHQ recorded Oct 24, 202651-20030 contacts →

Exact match

“Solid Optics specializes in optical transceivers and related products, including custom dark fiber CWDM and DWDM products.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
8Exact matchShenzhen, ChinaHQ recorded Oct 24, 2026501-1,00030 contacts →

Exact match

“Flyin Group Co,Ltd, established in Nov, 2005, is a leading worldwide manufacturer of fiber optic components.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
9Exact matchMainz, GermanyHQ recorded Oct 24, 202651-20026 contacts →

Exact match

“HUBER+SUHNER Cube Optics; Pushing the boundaries of fiber optical transport for more than 20 years Fiber optical transport is the backbone of the global data transmission.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
10Exact matchTres Cantos, SpainHQ recorded Oct 24, 202651-20025 contacts →

Exact match

“Fibernet is a Spanish company established in 1998 that belongs to Teldat Group.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
11Exact matchJiaxing, ChinaHQ recorded Oct 24, 2026501-1,00024 contacts →

Exact match

“Broadex Technologies is a leader in the design and manufacture of passive and active optical components for DWDM, FTTH, data centre and wireless networks.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
12Exact matchWuxi City, ChinaHQ recorded Oct 24, 2026501-1,00014 contacts →

Exact match

“Wuxi Taclink Optoelectronics was founded in with headquarter in Wuxi/China, and locations in Chengdu, Shenzhen, Berlin/Germany, and Bangkok/Thailand.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
13Exact matchVantaa, FinlandHQ recorded Oct 24, 20261-109 contacts →

Exact match

“BCC Solutions Ltd is one of the leading suppliers and offers advanced solutions for building and maintaining telecommunication networks.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
14Exact matchBucharest, RomaniaHQ recorded Oct 24, 20261-105 contacts →

Exact match

“Start BIT activeaza de peste 20 ani pe piata IT & Cdin Romania cu o dezvoltare continua in distributia echipamentelor de comunicatii.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
15Exact matchJohannesburg, South AfricaHQ recorded Oct 24, 20261-104 contacts →

Exact match

“A DWDM optical transmission services company focused on delivering high-capacity terrestrial wholesale bandwidth within Africa.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
16Exact matchKraków, PolandHQ recorded Oct 24, 20261-104 contacts →

Exact match

“Specjalizujemy się w dostarczaniu zaawansowanych komponentów służących do budowy wydajnych systemów transmisji danych w sieciach światłowodowych.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
17Exact matchShanghai, ChinaHQ recorded Oct 24, 202611-502 contacts →

Exact match

“Howell Optic Communication Technology Co,Ltd is a well-established enterprise engaged in supplying and trading Optical Components.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
18Exact matchStockholm, SwedenHQ recorded Oct 24, 20261-101 contacts →

Exact match

“Opto Dynamics provides you with requested hardware within the ict industry.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase

Showing 18 of 116 dense wavelength division multiplexers (dwdm) suppliers worldwide

See the full list, filter by size, metro and specialty, and access 363 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Dense wavelength division multiplexers (dwdm) suppliers worldwide at a glance

As of Oct 24, 2026
16.5%Verified-email coverage
18.9Average contacts per company
51-200Median size (employees)
16.4%Largest-city concentration · Shenzhen
Oct 24, 2026Page data refreshed

Companies by employee count

1-10
25
11-50
26
51-200
39
201-500
15
501-1,000
9
1,001-5,000
1
10001+
1

Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 116 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records worldwide whose business descriptions match “dense wavelength division multiplexers (dwdm) suppliers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 363 professional contacts with verified work emails across the full matched dataset. 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 October 24, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “dense wavelength division multiplexers (dwdm) suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many dense wavelength division multiplexers (dwdm) suppliers are there worldwide?

RevenueBase identified 116 company matches for dense wavelength division multiplexers (dwdm) suppliers worldwide as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Padtec S A tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most dense wavelength division multiplexers (dwdm) suppliers?

Shenzhen leads with 19 company records, followed by Chengdu (3) and Guilin (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 363 professional contacts with verified work emails tracked across these 116 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 24, 2026.

Ready to reach these companies? Verified emails and direct dials for all 116 dense wavelength division multiplexers (dwdm) suppliers worldwide. Start with a free account, no credit card.

Download this list →

Related lists

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 SmartSearch, 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.