Data centers around the world are growing in bandwidth capacity. With the commercial adoption of 200 and 400 Gbps starting in 2019, market volumes will continue to be driven by both parallel (SR4, PSM4 or DR4) and multi-wavelength (FR4, LR4 or CWDM) technologies. CS Adapters offer reduced ferrule pitch and higher density than LC connectors, and they support next-generation 200/400G QSFP-DD and OSFP transceivers.
Network uplinks need to move to higher speeds to match servers. The IEEE has released a new standard (IEEE 802.3.bs-2017), but currently there are parallel and WDM transceiver structures for 200/400G QSFP-DD/OSFP, each needing 8 optical lanes. Due to the QSFP interface, 2X duplex LC connectors cannot fit in the QSFP-DD/OSFP form factor. Therefore, network customers have requested a new LC design to fit the QSFP-DD/OSFP interface. In response, Molex has developed solutions incorporating CS Connectors for use with QSFP-DD and OSFP transceivers to increase port density in 100/200/400G applications.
Even though bandwidth has increased, operators expect to keep the same space. Therefore, the marketplace is demanding a reduction to the duplex LC connector pitch or a new design for a more compact LC housing. Molex designed the CS connector to deliver a nearly 50% space savings over the standard LC connector.
* CS™ Reduces Connector Size by 40% Compared to LC Duplex
* Uniboot Design Reduces Cable Volume by Up to 50% when Routing
* Corning G.657.A1 Bend Insensitive Fiber & 10mm Min. Bend Radius
* Push/Pull Tab For a Better Usability in High Density Applications
* Provides a Clearer Upgrade Path to 200 and 400G Operations
* Supports Two CS Cables in One QSFP-DD/OSFP Transceiver
| Connector Type |
CS TO LC |
Polish Type |
UPC/APC |
| Fiber Mode |
OS2 9/125μm |
Wavelength |
1100-1610nm |
| 400G Ethernet Distance |
based on module |
Insertion Loss |
≤0.2dB |
| Return Loss |
≥55dB |
Fiber Grade |
G.657.A1 |
| Attenuation at 1310 nm |
0.38dB/km |
Attenuation at 1550 nm |
0.20dB/Km |
| Fiber Count |
DX |
Cable Diameter |
2.0/3.0mm |
| Cable Jacket |
LSZH |
Operating Temperature |
-20 to 70°C |
about more CS connector and CS adapter. please reference as follow
PDF 
Fiber Ethernet Conversion
Fiber Active System
Fiber Distribution
Splitter & WDM
Fiber Accessories
Fiber Cable
