120G CXP
Overview: 120G CXP Optical Transceivers are high‑density, hot‑pluggable modules designed for ultra‑fast data transmission in InfiniBand FDR12 and 100G/120G Ethernet applications. Based on the CXP MSA (Multi‑Source Agreement) and compliant with IEEE 802.3ba, they integrate 12 parallel lanes of 10 Gbps each to deliver an aggregate bandwidth up to 120 Gbps. CXP modules are optimized for short‑reach, high‑density interconnect solutions in data centers and HPC clusters.
Technical Specifications
- Data Rate: 120 Gbps aggregate (12 × 10 Gbps lanes)
- Reach Options: CXP‑SR12 (100 m OM3, 150 m OM4) | CXP‑LR12 (10 km SMF)
- Wavelength: 850 nm for SR12 | 1310 nm for LR12
- Connector Interface: 24‑fiber MTP/MPO connector
- Fiber Type: Multimode (OM3/OM4) and Single‑Mode (SMF)
- Power Consumption: Typically ≤ 4.5 W (SR12 type)
- Hot‑Pluggable: Yes, per CXP MSA specification
- Standards Compliance: IEEE 802.3ba, CXP MSA, InfiniBand FDR12, RoHS
Main Features
- High‑density 12‑lane parallel optical interface (12 Tx + 12 Rx)
- Supports 100GBASE‑SR10, CXP‑SR12 and InfiniBand FDR12 links
- Hot‑pluggable electrical and optical interfaces for easy system integration
- Digital Diagnostics Monitoring (DDM/DOM) support for temperature and power control
- Optimized for top‑of‑rack and end‑of‑row data center interconnects
- Excellent EMI performance and compact footprint for high‑port density
- Available in custom breakout variants (12 × 10G to 3 × 40G QSFP+ or 6 × 20G links)
Applications
- 100G/120G Ethernet data center interconnects
- InfiniBand FDR12 and supercomputing clusters
- High‑Performance Computing (HPC) infrastructure
- Switch‑to‑switch and router short‑reach connections
- Parallel optical links in data center fabric architecture
Related Keywords: 120G CXP transceiver datasheet, CXP‑SR12 optical module, 100G InfiniBand CXP link, CXP 12‑lane fiber transceiver, high‑density CXP optics module.
FAQ – 120G CXP Optical Transceivers
1. What is a 120G CXP optical transceiver?
A 120G CXP transceiver is a parallel optical module supporting 12 × 10 Gbps lanes to deliver up to 120 Gbps for data center and InfiniBand links.
2. What applications use CXP modules?
They are used in high‑density data centers, supercomputing clusters, switch‑to‑switch links, and InfiniBand FDR12 connectivity.
3. What is the difference between CXP and QSFP?
CXP supports 12 lanes (120 Gbps total) while QSFP supports 4 lanes (40G or 100G); CXP is larger and used for short‑reach parallel links.
4. What connector type does CXP use?
CXP connectors use MTP/MPO‑24 interfaces for parallel fiber connections between modules.
5. Does CXP support Digital Diagnostics Monitoring?
Yes. CXP modules include DDM/DOM functions for temperature, optical power and voltage monitoring.
6. What fiber lengths and types are supported?
CXP‑SR12 supports 100 m (OM3) and 150 m (OM4); CXP‑LR12 supports up to 10 km on single‑mode fiber (SMF).
7. Can CXP modules be converted to QSFP+ or QSFP28 interfaces?
Yes. Breakout cables are available to convert CXP 12×10 Gbps outputs into 3 × 40G QSFP+ connections or 6 × 20G paths.
8. Which standards do CXP modules comply with?
They comply with IEEE 802.3ba 100GBASE‑SR10/LR10, CXP MSA specifications, and InfiniBand FDR12 standards.