Over the past 20 years, the size of data center has grown from
the on-premises data center of 5K servers to a cloud cluster
of 100K+ servers. Through network virtualization, more enterprise can place the
cloud native application on the servers of Cloud Cluster for better
system scalability, less cost investment and simpler maintenance.
To optimize computing & storage efficiency, the Cloud native
applications will disaggregate the program into multiple
microservices and distribute the microservice across different
containers in the data center. The distributed services drives the
need for more data movement between containers and generates
explosive east-west traffic. To facilitate Cloud distribution, data
center network simplifies the 3 Tiers network into the Spine-Leaf
network and evolves the bandwidth from 10G into 25G/100G even
400GBASE at the corner.
The next generation 400GBASE network satisfies the robust network
requirement by
Big data analysis and AI machine learning
The multi-platform servers of high performance and more
I/O CPU/GPUs
The network acceleration by DPUs & Smart NIC for high density
HPC
The latest new storage network architecture based on NVMe
Storage media
Critical power consumption and simplifed architecture
To immigrate from 100GBASE into 400GBASE, the next generation
data center will widely use the QSFP28 100G PAM4 Single Lambda
optics for ToR/Leaf interconnect. Compared to the legacy QSFP28
100G CWDM4, LR4 optics, QSFP28 100G PAM4 Single Lambda optics
no more need mux/demux 4 * 25G NRZ wave into 100G optical
path, simplify the structure design of QSFP28 100G optics and cut
down the high cost optical components. QSFP28 100G Single Lambda
optics uses the legacy 4 * 25G NRZ eletrical signal but add a DSP
chip to convert 4 * 25G NRZ into 1 * 100G PAM4 optical signal and
can be easily couple into the single lambda wave without difficult
wavelength control.
QSFP28 100G PAM4 optics uses one wavelength of 1310nm and enables
the interoperation with 400GBASE four parallel 1310nm channel
optics via the breakout solution.
The Arista compatible QSFP28 100G DR1 Transceivers can be plugged
into any Arista 100G QSFP port. The electrical connector interface
is 4 * 25G NRZ, the same as all existing legacy QSFP28
100G modules. But, not like 100G CWDM4, mux/demux 4 * 25G NRZ
optical signal into one fiber, the QSFP28 100G DR1 Transceivers
uses a gearbox chip to convert the 4 * 25G NRZ electrical
signals into a 1 * 100G PAM4 optical signal and couple into the
single wavelength laser (or "lambda") for transmission. Due
to different optical modulation, QSFP28 100G DR1 modules will
not interoperate with legacy 100G CWDM4 lite module.
The Top-Trans QSFP28 100G PAM4 DR1 optics uses single lambda signal
of 50GBaud on 1310nm center wavelength and support the link lengths
of up to 500m via G.652 single mode fiber. The Top-Trans
QSFP28 100G PAM4 DR1 optics uses PAM4 optical modulation and FEC
and is fully compliant with MSA QSFP28 100GBASE-DR.
Key Features
QSFP28 MSA Compliant
Support 53.125Gbps Baud RATE
100G Lambda 100GBASE-DR
Up to 500m transmission on single mode fiber (SMF) with FEC
Operating case temperature: 0 - 70 ℃
PAM4 Modulation, 4x25G PAM4 electrical signal to 1x100G PAM4
Laser
Single +3.3V power supply, Maximum power consumption 4.5W
Operating case temperature: 0~70C
RoHS compliant
Interconnect with 400GBASE-DR4 PAM4 Optics via MTP/MPO
Breakout Cable
We need port split from 400G to 4x100G What you can provide?
For 400G to 4 * 100G, we offer the breakout fiber link length for
DR-500M, FR-2KM
QSFPDD-400G-DR4 with 4 * QSFP28-100G-DR1
QSFPDD-400G-FR4 with 4 * QSFP28-100G-FR1
Via 8 cores MTP/MPO to 4 of 2 cores LC Duplex Breakout Cable
Can I use your QSFP28 module in Dell Z9000-ON
Yes, we can provide Dell compatibility, perfectly interoperate
with Dell S6000-ON, Z9000-ON etc platform
Can your optics interoper with QSFP28 CWDM4 lite?
No, their optical modulation are different, when CWDM4 lite
uses 4 * 25G NRZ, But this DR1 uses 1 * 100G PAM4
What if I find your optics are not satifiying with our fiber link,
occurs critical signal losses?
Our optics is produced using fresh new components through the
strict QC control on parameter and performance test
by the error detector and eye diagram. The qualification
ratio is over 99.9%
If any quality defects occurs within the warranty, we will
arrange the replace/repair service immediately