Scalable optical transport services for research laboratories

For a research lab moving massive datasets between sites, I’d focus on carriers that offer true Layer-1 wavelength/optical transport rather than ordinary Ethernet or Internet connectivity. The strongest choices depend heavily on where your sites are, but these stand out:

My shortlist

1. Internet2 — first choice if your laboratory qualifies

This is the option I'd investigate before a commercial carrier. Internet2 explicitly offers dedicated 100G/400G links and flexible-grid spectrum, rather than simply selling commercial connectivity. Its national network exceeds 16,000 miles and is purpose-built for higher education, government and research.internet2.edu

That distinction matters for a research lab: if you're moving telescope, genomics, physics, climate, microscopy, HPC or other enormous datasets, having access to dedicated Layer-1 capacity and research-network services can be more useful than simply buying a 400G commercial circuit.

2. Lumen — strongest commercial U.S. candidate

Lumen currently offers dedicated wavelength connectivity up to 400G, with more than 100,000 400G-enabled route miles and 400+ PoPs according to its current materials. Its standard/custom wavelength products allow tailored routing and redundancy, while RapidRoutes provide pre-engineered 100G/400G paths for faster deployment.www.lumen.com

For a lab with, say, Chicago ↔ New York ↔ California ↔ Texas sites, Lumen would be one of my first commercial quotes.

3. Zayo — particularly attractive when route diversity matters

Zayo has a 400G-enabled North American wavelength network built on a large independent fiber footprint. It emphasizes diverse, low-latency routes and custom-designed network solutions, which is valuable when the lab needs physically diverse primary/backup paths rather than just two circuits following the same fiber corridor.www.zayo.com

4. AT&T — very compelling if deployment speed matters

AT&T now offers 100G and 400G wavelengths, while Express Waves uses pre-provisioned routes and can turn up qualifying circuits in as little as 24 hours. AT&T also supports up to 42 wavelengths in its Private Dedicated Network product, giving it substantial aggregate scaling potential.www.business.att.com

AT&T also announced additional 400G metro availability in 2026, so its footprint is actively expanding.about.att.com

5. Colt / Arelion — move these toward the top for international sites

Colt is unusually interesting because it goes beyond ordinary fixed-rate waves: its Spectrum service provides flexible-grid optical capacity, with Colt describing applications from individual 100G channels through 800G–5Tbps flexible-grid requirements. Its Private Wave product also provides more control over topology and resilience.internet2.edu+1

Arelion offers dedicated 1G/10G/100G/400G DWDM wavelengths and has been deploying open optical systems supporting multi-vendor transponders and coherent pluggables. That's attractive for international research networks where interoperability and scalable optical capacity matter.www.arelion.com

What I'd put in the RFP

For a laboratory, I wouldn't simply ask carriers for "a 400G wavelength." I'd ask for:

• 400G coherent wavelength, with an explicit roadmap to 800G+
• Ability to order multiple wavelengths per fiber pair
• Physically diverse primary and secondary routes
• Layer-1 transparent Ethernet/OTN service
• Guaranteed latency, jitter and availability
• Protected and unprotected configurations
• Ability to upgrade bandwidth without a new physical build
• Flexible-grid spectrum pricing as an alternative to fixed wavelengths
• Detailed route/KMZ information, including fiber diversity
• Optical-layer encryption if required
• Support for jumbo frames and the lab's actual optical handoff/interface
• Clear demarcation of on-net vs. off-net segments
• SLA and restoration/repair commitments
• Options for direct connectivity to your HPC/data-center/Internet2/ESnet endpoints

One particularly important consideration: 400G wavelength ≠ 400G of application throughput in every deployment. Interface type, framing, optical overhead, MTU, equipment and end-to-end path design need to be specified.

Bottom line

If these are U.S. research sites, I'd solicit quotes from Internet2 + Lumen + Zayo + AT&T, with Verizon as another strong incumbent option. For international sites, add Colt and Arelion.

For the most demanding future-proof architecture, I'd specifically compare 400G wavelengths vs. flexible-grid spectrum. Spectrum can give a laboratory substantially more freedom as its traffic grows toward multi-hundred-gigabit and terabit-scale transfers; Colt explicitly positions flexible-grid Spectrum for 800G–5Tbps requirements.internet2.edu+1

Internet2 Layer 1 Services · Lumen Wavelength Solutions · Zayo Wavelengths · AT&T Wavelength Services · Colt Wavelength Services ·Arelion Wavelengths

If you give me the two/three site cities (or countries), required throughput, and whether you're affiliated with a university/research network, I can narrow this to the best 3–5 carriers and compare likely route diversity, 400G/800G availability, and deployment model.

For a research laboratory handling massive datasets (such as genomics, high-energy physics telemetry, or cryo-EM imaging), dedicated Layer 1 optical transport provides the predictable ultra-high throughput and low latency required.lumen.com

Major Tier 1 and specialized fiber infrastructure carriers offer robust, scalable, and flexible wavelength services tailored for heavy data workloads:

• Zayo Group
  • Overview: Operates an extensive independent fiber footprint spanning North America and Western Europe.
  • Flexibility & Scale: Offers custom-designed, high-capacity options ranging from 10G to 100G and 400G increments. They provide specialized low-latency, ultra-low latency, and express routes explicitly mapped between major data centers, research hubs, and carrier hotels. Learn more about their infrastructure on Zayo Wavelength Services.zayo.com+1
• Lumen Technologies
  • Overview: Delivers private Layer 1 connectivity over a robust global fiber backbone.
  • Flexibility & Scale: Lumen provides scalable point-to-point wavelengths (10 Gbps, 100 Gbps, and 400 Gbps) coupled with on-demand API management. Their Cloud Connect solutions also make it seamless to bridge high-throughput on-premise lab environments straight into major cloud providers (AWS, Azure, Google Cloud) for secondary analysis pipelines. Review their framework via Lumen Wavelength Solutions.lumen.com
• AT&T Business
  • Overview: Features massive nationwide and global optical transport capabilities utilizing advanced Dense Wavelength Division Multiplexing (DWDM).
  • Flexibility & Scale: Highly suited for institutional and academic research due to deep public-sector and university consortium contracting experience. Offers highly reliable, multi-terabit capable core infrastructure with custom resilient routing architectures and stringent performance SLAs.
• Comcast Business (Enterprise Solutions)
  • Overview: Leverages an exceptionally dense regional and national lit fiber-optic network utilizing DWDM technology.
  • Flexibility & Scale: Excellent if your research facilities are tied into major metropolitan corridors where Comcast has heavy metro-fiber density. Provides secure, point-to-point transparent transport with flexible single or diversely-routed protection options. Check out Comcast Business Wavelength Services.business.comcast.com+1

If you want to narrow this down, please share:

• The approximate geographic distance between the sites needing connectivity
• Your target throughput requirements (e.g., 10G, 100G, or higher)
• Whether you need diversely routed/redundant paths for high availability

I can help map out which provider has the strongest lit footprint for your specific corridor.

For a research lab moving massive datasets between facilities, the service to look for is dedicated optical wavelength transport also called *Wavelength Services* or *Layer 1 optical transport*. It provides private, point-to-point bandwidth with predictable performance, typically at 10, 100, or 400 Gbps, without sharing the wavelength's capacity with other customers.

In the U.S., there are two main categories worth evaluating: research and education networks designed for scientific collaboration, and commercial telecom carriers offering national or regional optical transport.

Providers to consider

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1. Internet2 — Research-focused optical transport

(Strong research fit)

Offers dedicated 100G and 400G point-to-point links, flexible-grid spectrum, and a national research networking footprint spanning more than 16,000 miles. Available to eligible members and other qualifying organizations.internet2.edu+1

Best for: Universities, research institutions, and eligible scientific collaborations.

Official Layer 1 service page

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2. Lumen Technologies — High-capacity commercial waves

Offers dedicated wavelength services up to 400 Gbps, with customizable routes and a broad U.S. fiber footprint.www.lumen.com+1

Best for: Multi-site labs and data-intensive facilities needing commercial carrier service.

Official wavelength services page

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3. Zayo — Scalable metro and long-haul connectivity

Provides dedicated wavelength connections from 10G through 400G, diverse routing options, and support for custom network designs across North America.www.zayo.com+1

Best for: Labs moving large datasets between distant sites or data centers.

Official wavelength services page

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4. Verizon Business — Private, low-latency transport

Offers point-to-point 10G, 100G, and 400G wavelengths, with service-level agreements, route diversity options, and metro and long-haul connectivity.www.verizon.com

Best for: Research sites requiring predictable throughput and resilience.

Official wavelength services page

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5. AT&T Business — Metro and nationwide wavelength services

Offers dedicated connections up to 400 Gbps through separate metro and long-haul products, with private point-to-point connectivity and stated 99.999% uptime SLAs.www.business.att.com

Best for: Labs connecting local facilities, regional sites, or coast-to-coast locations.

Official wavelength services page

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6. Florida LambdaRail — Dedicated research wavelengths

Offers point-to-point optical services at several capacities, including 100G and 400G, for participating institutions across Florida, alongside connections to Internet2.www.flrnet.org

Best for: Florida-based research organizations that qualify for participation.

Official services page

How to choose for a research lab

My recommendation: Start with Internet2 if your lab is affiliated with a university or eligible research institution, and compare it with Lumen and Zayo for commercial reach and flexible capacity. The best fit depends heavily on the locations being connected and whether you need managed wavelengths or the greater control of dark fiber.

One question that would help narrow the shortlist: What locations do you need to connect? For example, two U.S. research campuses, U.S.–Europe, or multiple data centers.