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Cisco® QSFP28 100G ZR High TX Power coherent optics help operators extend 100 Gigabit Ethernet (100G) connectivity into access, aggregation, campus, and legacy Reconfigurable Optical Add-Drop Multiplexer (ROADM)-based networks by delivering up to 0 dBm transmit power within a 6W QSFP28 power profile. Built as a vertically integrated product, the module combines Cisco Digital Signal Processor (DSP), photonics, firmware, and pluggable module design to bring tunable 100G Dense Wavelength-Division Multiplexing (DWDM) transmission to widely deployed QSFP28 ports. The compact QSFP28 pluggable form factor replaces legacy transponder shelves in traditional access and aggregation architectures, driving CapEx and OpEx savings. Support for both Staircase Forward Error Correction (SC-FEC) and Generic Forward Error Correction (GFEC) enables interoperability with modern coherent links and legacy Optical Transport Network (OTN) transponders, while dual management capability based on the Storage Networking Industry Association (SNIA) Short-Device Form Factor (SFF) specification and Optical Internetworking Forum (OIF) Common Management Interface Specification (CMIS) gives operators deployment flexibility across installed routers, switches, and newer host platforms.
The Cisco QSFP28 100G ZR High TX Power Coherent Optics Module is a 100G DWDM pluggable module designed for edge, access, aggregation, enterprise/campus, cable/fiber deep, 5G wireless x-haul, and legacy ROADM-based network applications. It combines a tunable C-band laser, dual-polarization Quadrature Phase Shift Keying (QPSK) coherent modulation, intradyne coherent detection, advanced electronic link equalization, and up to 0 dBm transmit power in an industry-standard QSFP28 form factor with a 6W high-power operating profile.
The module is designed to make coherent transmission practical in 100G network segments where customers need greater reach and higher fiber efficiency. It enables simplified IP over DWDM deployments in Cisco Routed Optical Networking architectures while preserving compatibility with existing optical infrastructure. Its 0 dBm high-transmit-power capability helps support engineered deployments through legacy ROADM paths and other higher-loss DWDM environments. SC-FEC support enables high-performance 100ZR operation, and GFEC support provides interoperability with legacy OTN transponders. The module also supports both SFF-based management for installed-base routers and switches and CMIS-based management for platforms adopting the latest module management standard. Actual reach depends on fiber type, optical path loss, Optical Signal-to-Noise Ratio (OSNR), dispersion, channel plan, ROADM cascade, and other link engineering conditions.
The Cisco QSFP28 100G ZR High TX Power Coherent Optics Module is intended for engineered optical links. Link design should account for transmit power, receiver input power, optical path loss, OSNR, chromatic dispersion, polarization effects, connector loss, amplifier noise figure, filter narrowing, and channel loading. Reach values are representative of supported application spaces and are not a substitute for optical path engineering.
Table 1. Features and benefits
| Feature |
Benefit |
| QSFP28 coherent pluggable form factor |
Enables 100G coherent DWDM connectivity in widely deployed QSFP28 ports and helps preserve existing platform investment. |
| Tunable C-band operation |
Simplifies sparing and supports flexible DWDM channel planning across the C-band. |
| 0 dBm transmit power within a 6W profile |
Helps support engineered deployments across legacy ROADM-based networks and higher-loss DWDM dark fibers while staying within a compact QSFP28 power envelope. |
| Integrated SC-FEC and GFEC options |
Supports high-performance 100ZR operation and interoperability with legacy OTN transponders. |
| SFF-based and CMIS-based management |
Supports familiar management for installed-base routers and switches while also supporting newer CMIS-based host platforms. |
| Cisco platform validation |
Cisco host platforms qualification for performance, and for reliability and robustness. |
| Extended temperature |
Supports an extended temperature range that enables operation in harsh outdoor environments |
The Cisco QSFP28 100G ZR High TX Power Coherent Optics Module supports up to 0 dBm high TX power with less than 6W power consumption in extended temperature conditions. Built as a vertically integrated product, the module combines Cisco DSP, photonics, firmware, and pluggable module design to bring tunable 100G DWDM transmission to widely deployed QSFP28 ports. The compact QSFP28 pluggable form factor replaces legacy transponder shelves in traditional access and aggregation architectures. The module can be managed using legacy SNIA SFF management as well as OIF CMIS management specifications.
Cisco QSFP28 100G ZR High TX Power Coherent Optics Modules are supported on Cisco switches and routers. For more details, refer to the Cisco Transceiver Modules Compatibility Matrix.
Table 2. Detailed product specifications
| Parameter |
Specification |
| Line-side application |
100ZR SC-FEC (IEEE 802.3ct / ITU-T G.709.2) and Optical Transport Unit level 4 (OTU4) GFEC (ITU-T G.709) |
| Client formats |
100G OTU4 |
| Host electrical interface |
100GBASE-R: CAUI-4 RS-FEC and CAUI-4 without FEC OTU4: Optical Transport Lane 4.4 (OTL4.4) |
| Modulation |
Dual-polarization QPSK |
| Line bit rate |
111.8 Gbps |
| Symbol rate |
27.95 Gbaud |
| Wavelength range |
Tunable C-band, 191.3 to 196.2 THz |
| Channel spacing |
Supports flexible grid operation with 6.25 GHz tuning granularity; 50 GHz grid operation supported |
| Transmit power |
Up to 0 dBm within a 6W high-power operating profile |
| Reach |
Up to 160 km point-to-point unamplified links; up to 500 km amplified DWDM links; actual reach depends on link conditions |
| Receiver sensitivity |
-32 dBm with SC-FEC -28 dBm with G.709 FEC |
| Optical connector |
Duplex LC |
| Fiber type |
Single-mode fiber |
| Management interface |
SFF-based I2C module management and CMIS-based module management |
| FEC support |
IEEE 802.3ct / ITU-T G.709.2 SC-FEC; ITU-T G.709 GFEC/RS-FEC |
| Synchronous Ethernet (SyncE) |
Supported |
| Operating case temperature |
-20° to +80° C (-4° to 176° F) |
| Power consumption |
Up to 6W in high-power operation |
| Supply voltage |
3.3 V nominal |
Table 3. Ordering information
| Part # |
Product description |
| DP01QS28-MX1-A1 |
QSFP28 100G DCO -5 dBm o/p power C-Band Flex Grid Extended Temperature |
| DP01QS28-MX1-A1= |
QSFP28 100G DCO -5 dBm o/p power C-Band Flex Grid Extended Temperature |
| QSFP100GMX1-2-BUN |
Routed Optical Networking 2x100G C-Band MX1-A1 QSFP Bundle |
| QSFP100GMX1-20-BUN |
Routed Optical Networking 20x100G C-Band MX1-A1 QSFP Bundle |
| DP01QS28-MX2-A1 |
QSFP28 100G DCO 0dBm o/p power C-Band Flex Grid Extended Temperature |
| DP01QS28-MX2-A1= |
QSFP28 100G DCO 0dBm o/p power C-Band Flex Grid Extended Temperature |
| QSFP100GMX2-2-BUN |
Routed Optical Networking 2x100G C-Band MX2-A1 QSFP Bundle |
| QSFP100GMX2-20-BUN |
Routed Optical Networking 20x100G C-Band MX2-A1 QSFP Bundle |
Product warranty terms and other information applicable to Cisco products are available at www.cisco.com/go/warranty.
Information about Cisco’s Environmental, Social, and Governance (ESG) initiatives and performance is provided in Cisco’s CSR and sustainability reporting.
Table 4. Cisco environmental sustainability information
| Sustainability topic |
Reference |
|
| General |
Information on product-material-content laws and regulations |
|
| Information on electronic waste laws and regulations, including our products, batteries, and packaging |
||
| Information on product takeback and reuse program |
||
| Sustainability inquiries |
Contact: csr_inquiries@cisco.com |
|
| Material |
Product packaging weight and materials |
Contact: environment@cisco.com |
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For more information about Cisco QSFP28 100G ZR High TX Power Coherent Optical Modules, please visit the Cisco Product Information Matrix at https://copi.cisco.com/.