Why Choose QSFP28-100G-SRBD Fiber Optic Module?

1.Description:

2.Features:

3. Applications:

4.Questions & Answers

If you are worried about the short-distance wiring in the computer room, the YXFiber QSFP28-100G-SRBD optical module may be of great help. Its greatest ability is to run two signals "back and forth" in a multimode optical fiber at the same time, which is equivalent to turning a one-way street into a two-way high-speed road, saving ports and wires.

The reason why it can do this is that two VCSEL lasers with different wavelengths are inserted inside, and combined with PAM4 modulation, the 100 GbE signal is "stacked" together and sent out. If the wire material is selected appropriately, OM3 can support 70 meters, OM4 can be pulled to 100 meters, and OM5 can go another 50 meters, which is basically enough for the distance between cabinets.

1.Description:

YXF-Q28-M85L-01D is a Four-Channel,Pluggable, LC Duplex, Fiber-Optic QSFP+ Transceiver for 100 Gigabit Ethernet Applications. This transceiver is a high performance module for short-range duplex data communication and interconnect applications. It integrates four electrical data lanes in each direction into transmission over a single LC duplex fiber optic cable. Each electrical lane operates at 25.78125 Gbps and conforms to the 100GE XLPPI interface.

The transceiver internally multiplexes an XLPPI 4x25G interface into two 50Gb/s electrical channels, transmitting and receiving each optically over one simplex LC fiber using bi-directional optics. This results in an aggregate bandwidth of 100Gbps into a duplex LC cable. This allows reuse of the installed LC duplex cabling infrastructure for 100GbE application. Link distances up to 70 m using OM3 and 100m using OM4 optical fiber are supported. These modules are de- signed to operate over multimode fiber systems using a nominal wavelength of 850nm on one end and 900nm on the other end. The electrical interface uses a 38 contact QSFP28 type edge connector. The optical interface uses a conventional LC duplex connector.

2.Features:                                              

Compliant to the 100GbE XLPPI electrical specification per IEEE 802.3bm

Compliant to QSFP28 SFF-8636 Specification

Aggregate bandwidth of > 100Gbps

Dual wavelength VCSEL bi-directional optical interface, PAM4 2 × 50-Gb/s 850 nm/900 nm

QSFP28 MSA compliant

Capable of over 70m transmission on OM3 Multimode Fiber (MMF)and 100m on OM4 MMF

Single +3.3V power supply operating  

Without digital diagnostic functions  

Temperature range 0°C to 70°C  

RoHS Compliant Part

Utilizes a standard LC duplex fiber cable allowing reuse of existing cable infrastructure

Support 40G/100Gbps

3. Applications:

100 Gigabit Ethernet interconnects

Datacom/Telecom switch & router connections

Data aggregation and backplane applications

Proprietary protocol and density applications

4.Questions & Answers

4.1 Is this 100G transceiver allowing the use of standard duplex multi-mode fiber?

Yes, QSFP28-100G-SRBD is an LC dual-core multimode interface, which can be used as soon as it is plugged in.

4.2 Could you please tell me what chip is being used in these?

We chose Marvell's VCSEL chip, which has a stable signal, low power consumption, and can run for a long time without worry.

4.3 What is the difference between QSFP and QSFP28?

QSFP is a general term for "quad-channel small form factor pluggable", and QSFP28 is a version that runs 100 Gbps.

4.4 Is QSFP28 backwards compatible with QSFP+?

Yes, the QSFP28 port is backward compatible with QSFP+, and it can run 40 Gbps when it is plugged in; the reverse is not true, the QSFP28 module cannot be put into the QSFP+ port because the old port cannot run 100 G.

4.5 Why is it called QSFP28?

The 28 in the name refers to 28 Gbps per channel, a total of 4 channels, 4×28 just makes up 100G.