100G QSFP28 ER4 Lite Optical Transceiver Singlemode
This product is a 100Gb/s transceiver module designed for optical communication applications compliant to 100GBASE-ER4 Lite standard. The module converts 4 input channels of
25Gb/s electrical data to 4 channels of LAN WDM optical signals and then multiplexes them into a single channel for 100Gb/s optical transmission.up to 112Gb/s optical transmission.
Reversely on the receiver side, the module de-multiplexes a 100Gb/s
optical input into 4 channels of LAN WDM optical signals , up to
112Gb/s optical input and then converts them to 4 output channels
of electrical data. The central wavelengths of the 4 LAN WDM channels are 1295.56,
1300.05, 1304.58 and 1309.14 nm as members of the LAN WDM wavelength grid defined in IEEE 802.3ba. The high performance
cooled LAN WDM EA-DFB transmitters and high sensitivity APD receivers provide
superior performance for 100Gigabit Ethernet applications up to 40km links with FEC.
The product is designed with form factor, optical/electrical
connection and digital diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA). It has been
designed to meet the harshest external
operating conditions including temperature, humidity and EMI interference.
2. Functional Description
The transceiver module receives 4 channels of 25Gb/s or 28Gb/s
electrical data, which are processed by a 4-channel Clock and Data
Recovery (CDR) IC that reshapes and reduces the jitter of each
electrical signal.Subsequently, each of 4 laser driver IC's
converts one of the 4 channels of electrical signals to an optical
signal that is transmitted from one of the 4 cooled EML lasers which are
packaged in the Transmitter Optical Sub-Assembly (TOSA). Each laser launches the optical signal in
specific wavelength specified in IEEE802.3ba 100GBASE-ER4 requirements. These 4-lane optical signals
will be optically multiplexed into a single fiber by a 4-to-1 optical WDM MUX. The optical output power
of each channel is maintained constant by an automatic power control (APC) circuit. The transmitter output
can be turned off by TX_DIS hardware signal and/or 2-wire serial interface The receiver receives 4-lane LAN WDM optical signals. The optical
signals are de-multiplexed by a 1-to-4 optical DEMUX and each of the resulting 4 channels of optical
signals is fed into one of the 4 receivers that are packaged into the Receiver Optical Sub-Assembly (ROSA). Each
receiver converts the optical signal to an electrical signal. The regenerated electrical signals are retimed and de-jittered and
amplified by the RX portion of the 4-channel CDR. The retimed 4-lane output electrical signals are compliant with CEI-28G-VSR interface requirements. In addition, each received optical signal is
monitored by the DOM section. The monitored value is reported through the 2-wire serial interface. If one or more
received optical signal is weaker than thethreshold level, RX_LOS
hardware alarm will be triggered.A single +3.3V power supply is
required to power up this product. Both power supply pins VccTx and
VccRx are internally connected and should be applied concurrently. As per
MSA specifications the module offers 7 low speed hardware control pins (including the
2-wire serial interface): ModSelL, SCL, SDA,ResetL, LPMode, ModPrsL
and IntL.Module Select (ModSelL) is an input pin. When held low by
the host, this product responds to 2-wire serial communication commands. The ModSelL allows the use of this product
on a single 2-wire interface bus –individual ModSelL lines must be used.Serial Clock (SCL) and Serial Data (SDA)
are required for the 2-wire serial bus enable the .host to access the QSFP28 memory map.communication interface and
The ResetL pin enables a complete reset, returning the settings to
their default state, when a low level on the ResetL pin is held for longer than the minimum pulse length. During
the execution of a reset the host shall
disregard all status bits until it indicates a completion of the
reset interrupt. The product indicates this by posting an IntL (Interrupt) signal with the Data_Not_Ready bit
negated in the memory map. Note that on
power up (including hot insertion) the module should post this
completion of reset interrupt without requirin a reset.
Low Power Mode (LPMode) pin is used to set the maximum power
consumption for the product in order to protect hosts that are not capable of cooling higher power modules,
should such modules be accidentally
inserted.Module Present (ModPrsL) is a signal local to the host board which, in the absence of a product, is normal pulled up to the host Vcc. When the product is inserted into the connector, it completes the path to ground through a resistor on the host board and asserts the signal.
ModPrsL then indicates its present by setting ModPrsL to a “Low” state.
Interrupt (IntL) is an output pin. “Low” indicates a possible
operational fault or a status critical to the host system. The host
identifies the source of the interrupt using the 2-wire serial
interface. The IntL pin is an open collector output and must be
pulled to the Host Vcc voltage on the Host board.
This transceiver is specified as ESD threshold 1kV for SFI pins and
2kV for all other electrical input pins, tested
per MIL-STD-883, Method 3015.4 /JESD22-A114-A (HBM). However,
normal ESD precautions are still required during the handling of this module. This transceiver is shipped in
ESD protective packaging. It should be removed from the packaging and handled only in an ESD protected
This is a Class 1 Laser Product according to EN 60825-1:2014. This
product complies with 21 CFR 1040.10 and
1040.11 except for deviations pursuant to Laser Notice No. 50,
dated (June 24, 2007).
Caution: Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.
OEM and ODM
OEM/ODM order is available.
We promise all the advertised optical transceivers are brand new
with new components and parts and absolutely never use old and
refurbished materials. All the optical transceivers have been
through functional test and aging test. We provide 3 years warranty
for all the optical transceivers from the date of shipment.
What we supply
We supply all kinds of compatible optical transceiver modules,
including SFP, GBIC, SFP+, XENPAK, X2 , XFP, BIDI,CWDM,DWDM and
other special transceiver modules. Our products are compatible with
most of brands. If more details, please contact us.
Q:Do you sell second-hand products?
A:No.All our products are brand new,we never use second-hand
Q:What payment terms do you accept?
A:T/T,Paypal,Western Union are acceptable.
Q:What are the shipping ways can you offer?
A:Our usual shipping ways are DHL,FedEX,TNT,UPS,EMS etc.It will take
Q:Do your products come with warranty?
A:Yes,We provide 3 years warranty for all our products from the date
Q:What devices can your products compatible with?
A:Our products are compatible with Mainstream switches.
Q:How to place an order?
A:1>Order details confirmed,please tell us the model and quantity
2>Proforma Invoice confirmed, the order will be arranged upon
receipt of your payment.
3>Confirm and ship the goods, then tracking number will be sent
to you promptly.
4>We will help to track your goods until you receive them