Optech QDD-800GB-ZR-AO: 800GBase-ZR Optical Transceiver for Long-Distance High-Capacity Networks

As network traffic continues to grow across cloud infrastructure, data centers, telecom networks, and high-capacity backbone systems, operators need optical solutions that can carry more bandwidth over longer distances without adding unnecessary network complexity.

For these applications, 800G long-distance optical connectivity is becoming increasingly important.

The Optech QDD-800GB-ZR-AO is designed to support next-generation high-capacity networking with 800GBase-ZR performance, providing transmission of up to 120km over single-mode fiber.

With PAM4 technology, LC connectivity, and DOM support, the QDD-800GB-ZR-AO is built for customers who require high bandwidth together with extended optical reach.

As a Taiwan manufacturer, Optech can also support project-specific customization, compatibility requirements, labeling, coding, documentation, and TAA-oriented procurement needs.

Why 800G Long-Distance Connectivity Matters

The demand for bandwidth is no longer limited to inside the data center.

Modern networks must also connect:

• data centers across a city or region
• cloud infrastructure
• carrier backbone networks
• high-capacity aggregation sites
• AI and HPC facilities
• telecom and transport infrastructure
• enterprise campuses
• remote network locations

As network speeds increase from 100G and 400G toward 800G, long-distance optical links become increasingly important.

A high-capacity 800G optical solution can help reduce the number of lower-speed links required between network locations.

This can simplify network design while increasing total available bandwidth.

Optech QDD-800GB-ZR-AO Overview

The QDD-800GB-ZR-AO is designed for high-capacity, long-distance optical networking applications.

Based on the product description, its key characteristics include:

This combination makes the module especially suitable for applications where both bandwidth and transmission distance are critical.

Up to 120km Over Single-Mode Fiber

One of the most important advantages of the QDD-800GB-ZR-AO is its extended transmission capability.

The module is designed for up to 120km transmission over single-mode fiber.

This makes it relevant for network environments that extend well beyond traditional intra-data-center links.

Potential applications include:

• regional data center interconnect
• metropolitan network connections
• telecom transport
• high-capacity backbone links
• enterprise campus interconnect
• long-distance AI infrastructure connectivity
• cloud network expansion

For customers with geographically distributed infrastructure, this longer reach can provide greater flexibility in network planning.

High Bandwidth with 800GBase-ZR Performance

800G provides significantly more aggregate bandwidth than previous network generations.

For operators upgrading large-scale infrastructure, this can help support:

higher traffic density

fewer physical links

greater network scalability

future bandwidth growth

The QDD-800GB-ZR-AO is designed for customers who need to increase transport capacity without relying on a large number of lower-speed connections.

PAM4 Technology for High-Speed Data Transmission

The QDD-800GB-ZR-AO uses PAM4 technology to support high-speed data transmission.

PAM4 transmits multiple signal levels per symbol, allowing more information to be carried within the available electrical and optical bandwidth.

For 800G networking, this helps support the high data density required by next-generation infrastructure.

PAM4 technology is widely associated with modern high-speed networking architectures because it enables greater bandwidth per lane compared with earlier signaling approaches.

LC Connectivity for Practical Fiber Deployment

The Optech QDD-800GB-ZR-AO uses LC connectivity.

LC is widely used across telecom, data center, enterprise, and structured fiber networks.

For customers, LC-based connectivity can offer several practical advantages:

familiar fiber infrastructure

compact connector design

easy patching and maintenance

compatibility with existing single-mode fiber systems

This can make the module easier to integrate into networks where duplex LC fiber infrastructure is already installed.

DOM Support for Better Network Monitoring

The QDD-800GB-ZR-AO includes DOM — Digital Optical Monitoring support.

DOM allows network operators to monitor important transceiver operating parameters.

Depending on implementation, this can help support visibility into items such as:

• optical power
• module temperature
• operating voltage
• transceiver status
• alarm conditions

For long-distance optical links, monitoring is especially valuable because network operators need greater visibility into link health and performance.

Designed for High-Capacity Long-Distance Applications

The QDD-800GB-ZR-AO is particularly well suited to network environments where conventional short-reach optics are not sufficient.

Typical use cases can include the following.

Data Center Interconnect

As organizations operate multiple data centers, high-speed links between facilities become increasingly important.

800G long-distance connectivity can help transport large amounts of traffic between sites while reducing dependence on multiple lower-speed connections.

Cloud Infrastructure

Cloud operators require high-capacity backbone connectivity between network zones, facilities, and regional infrastructure.

The QDD-800GB-ZR-AO can support these bandwidth-intensive applications.

Telecom Backbone

Telecom and carrier networks require reliable long-distance connectivity between aggregation and transport locations.

An 800G optical link can help increase network capacity while supporting future traffic growth.

AI and HPC Infrastructure

AI and HPC facilities generate extremely large datasets.

When compute and storage infrastructure are distributed across different locations, high-capacity long-distance optical connections can help keep data moving between network domains.

Enterprise and Campus Networks

Large enterprises, research institutions, and campuses may operate multiple facilities separated by significant distance.

The 120km reach provides additional flexibility for regional or distributed networking.

Why Extended Reach Can Reduce Network Complexity

Without sufficient optical reach, network operators may need additional intermediate equipment between two sites.

A longer-reach transceiver can potentially reduce the number of stages required in the optical path.

This may simplify:

• network architecture
• equipment management
• rack space
• power consumption
• maintenance
• link troubleshooting

For customers planning large-scale network expansion, fewer intermediate elements can improve overall deployment efficiency.

Optech Customization Capability

High-speed long-distance projects often require more than a standard catalog product.

Different customers may have different requirements for:

• platform compatibility
• firmware
• EEPROM coding
• labels
• serial numbers
• diagnostics
• packaging
• product identification
• compliance documentation
• project-specific testing

Optech can work with customers to customize the QDD-800GB-ZR-AO according to the actual network environment.

Platform Compatibility Support

Optical transceiver compatibility can vary between different switches and network platforms.

Optech can support compatibility-oriented configuration based on the target equipment.

Customers are encouraged to provide:

switch manufacturer

switch model

firmware version

port speed

network protocol

quantity

so Optech can evaluate the appropriate configuration before sample or production orders.

EEPROM and Firmware Customization

Some networking platforms require specific transceiver coding.

Optech can work with customers on EEPROM or firmware configuration where required.

This can help improve compatibility with target networking systems and reduce deployment uncertainty.

Custom Labeling and Serial Numbers

For large projects, customers may require specific product tracking and identification.

Optech can support customized:

• customer part numbers
• product labels
• serial-number formats
• QR codes
• barcodes
• logos
• country-of-origin markings

This can help simplify asset management and project traceability.

Project-Specific Testing and Qualification

Before large-scale deployment, customers may want to qualify the product in their own network environment.

Optech can support an engineering process from sample evaluation through mass production.

A typical project flow can include:

Requirement Review → Product Configuration → Engineering Sample → Compatibility Testing → Optical Performance Validation → Customer Qualification → Volume Production

This helps customers reduce project risk before committing to larger quantities.

Taiwan Manufacturing

For customers seeking a diversified and reliable optical supply chain, Optech provides Taiwan-based manufacturing and technical support.

Taiwan manufacturing can be especially relevant for customers focused on:

• supply-chain diversification
• project traceability
• quality control
• country-of-origin requirements
• government procurement
• regulated infrastructure

Optech can work with customers on both technical and documentation requirements.

TAA Options Available

For eligible projects, Optech can support Taiwan-origin and TAA-oriented product options.

This can be relevant for:

• government procurement
• public-sector projects
• research institutions
• education networks
• regulated infrastructure
• projects requiring specific country-of-origin documentation

Final TAA status should be confirmed according to the exact product configuration, manufacturing process, and applicable procurement requirements.

Customers should indicate the TAA requirement during the quotation stage so the correct product and documentation can be prepared.

Why Choose Optech QDD-800GB-ZR-AO?

The QDD-800GB-ZR-AO combines several features that make it attractive for next-generation long-distance networks:

800GBase-ZR performance
High-capacity connectivity for bandwidth-intensive infrastructure.

Up to 120km Reach
Designed for extended single-mode fiber applications.

PAM4 Technology
Supports high-speed data transmission.

LC Connectivity
Integrates with familiar single-mode fiber infrastructure.

DOM Support
Provides visibility into module operating conditions.

Customization Capability
Optech can support coding, labeling, compatibility, and project-specific requirements.

Taiwan Manufacturing
Taiwan-based production and technical support.

TAA Options
Available for eligible project configurations.

Built for Network Expansion

The move to 800G is not simply a speed upgrade.

It is also about preparing the network for:

• increasing cloud traffic
• AI workload growth
• distributed computing
• high-capacity backbone expansion
• next-generation telecom networks
• larger data center interconnects

By combining 800G bandwidth with up to 120km reach, Optech QDD-800GB-ZR-AO provides customers with an option for building high-capacity infrastructure across longer distances.

Ready for Samples and Volume Orders

Optech welcomes inquiries for:

• QDD-800GB-ZR-AO samples
• 800GBase-ZR projects
• 120km optical links
• compatibility testing
• custom coding
• custom labeling
• OEM / ODM projects
• TAA requirements
• project pricing
• production lead time
• volume orders

Customers can provide the target platform, required distance, quantity, firmware version, and compliance requirements so Optech can recommend the appropriate configuration.

Contact Optech today for samples, customized solutions, pricing, compatibility support, and volume orders.

FAQ

1. What is the Optech QDD-800GB-ZR-AO?

The Optech QDD-800GB-ZR-AO is an 800GBase-ZR optical transceiver designed for high-capacity, long-distance networking over single-mode fiber.

2. What is the maximum transmission distance?

Based on the product specification provided, the QDD-800GB-ZR-AO supports transmission of up to 120km over single-mode fiber.

3. What connector does the module use?

The QDD-800GB-ZR-AO uses LC connectivity.

4. Does the module support PAM4?

Yes. The QDD-800GB-ZR-AO is designed with PAM4 technology for high-speed 800G data transmission.

5. Does it support DOM?

Yes. The module supports Digital Optical Monitoring (DOM), helping network operators monitor important transceiver operating parameters.

6. What applications is the QDD-800GB-ZR-AO designed for?

Typical applications include data center interconnect, telecom backbone, cloud infrastructure, high-capacity enterprise networks, AI/HPC connectivity, and other long-distance 800G links.

7. Why is 120km reach useful?

Extended reach allows customers to connect network locations that are significantly farther apart than typical data center links, potentially reducing the need for additional intermediate equipment.

8. Can Optech customize the module?

Yes. Optech can work with customers on compatibility coding, firmware, EEPROM configuration, labels, serial numbers, packaging, testing, and other project-specific requirements.

9. Can Optech support different switch platforms?

Optech can evaluate compatibility requirements for different networking platforms. Customers should provide the target switch model and firmware version during the quotation or sample stage.

10. Can customers request samples before mass production?

Yes. Optech welcomes engineering sample requests and customer qualification before volume deployment.

11. Is the QDD-800GB-ZR-AO suitable for AI infrastructure?

It can be used in applications where AI or HPC infrastructure requires high-capacity long-distance network connections between facilities or network domains.

12. Is it suitable for data center interconnect?

Yes. Its combination of 800G bandwidth and extended SMF reach makes it relevant to high-capacity data center interconnect applications.

13. Does Optech provide TAA options?

Optech can support Taiwan-origin and TAA-oriented options for eligible configurations. Final TAA compliance should be confirmed according to the specific product, manufacturing process, and procurement requirements.

14. Does Optech support OEM / ODM projects?

Yes. Optech can support customized labels, customer part numbers, coding, product configuration, documentation, and other OEM/ODM requirements.

15. How can customers place an order?

Customers can provide Optech with the required quantity, target switch, firmware, distance, labeling requirements, TAA needs, and project schedule.

Optech can then provide the appropriate configuration, sample support, quotation, and production plan.

Conclusion

As networks move toward higher bandwidth and more geographically distributed infrastructure, long-distance 800G connectivity is becoming increasingly important.

The Optech QDD-800GB-ZR-AO is designed to address this requirement with:

800GBase-ZR performance
up to 120km over single-mode fiber
PAM4 technology
LC connectivity
DOM support

Combined with Optech's customization capability, Taiwan manufacturing, compatibility support, OEM/ODM services, and TAA options, the QDD-800GB-ZR-AO provides a flexible solution for high-capacity long-distance network projects.

Optech welcomes sample requests, custom projects, qualification programs, and volume orders for QDD-800GB-ZR-AO and other high-speed optical transceiver solutions.