Custom 100G QSFP28 SRBD Module (Short-Reach BiDirectional)

Product Description

The 100G QSFP28 SRBD (Short-Reach BiDirectional) transceiver is the definitive upgrade tool for enterprise LANs severely constrained by existing cabling infrastructure. Standard 100G multimode setups (SR4) mandate parallel MPO fiber arrays. The SRBD module circumvents this by integrating a PAM4 encoder alongside precision diplexers, splitting the 100G data payload into two 50G bidirectional streams (riding on 850nm and 900nm). This allows 100Gbps traffic to flow seamlessly over standard Duplex LC multimode pairs. WolonFiber's OEM coding expertise guarantees drop-in compatibility across disparate networking brands.

Key Features

• DSP Jitter Eradication: Employs a robust Digital Signal Processor (DSP) to mathematically compensate for the severe modal dispersion triggered by pushing 50G baud rates through multimode glass.

• Backward-Compatible Architecture: Protects historical infrastructure investments by allowing data centers with extensive 10G/40G LC patch panels to immediately transition to 100G backbones.

• Strict Power Regulation: Despite housing an advanced DSP and bidirectional optical sub-assemblies, aggregate power dissipation is aggressively locked below 4.0W.

Application Scenarios

• Financial institutions or university data centers prohibiting intrusive wall demolition and new fiber routing.

• Direct, in-place hardware upgrades transitioning from legacy 40G BiDi topologies to 100G aggregation.

Technical Specifications

Engineering FAQs

• Q: Does the 100g qsfp28 srbd use a single fiber strand like the 50G single-mode BiDi?

  A: No. 50G/100G Single-Mode BiDi uses a Simplex LC (one strand). The 100G SRBD uses a traditional Duplex LC (two strands). "Bidirectional" here implies that each strand carries both 850nm and 900nm light in opposing directions simultaneously.

• Q: Do I need to track A-side and B-side pairings for SRBD modules?

  A: No. The 100G SRBD is symmetrically designed. The internal optical crossover allows you to plug the exact same part number into both ends of the link, greatly simplifying your spare inventory.

• Q: Why does the module reach further on OM5 fiber?

  A: OM5 is Wideband Multimode Fiber (WBMMF). It is specifically engineered to handle multiple wavelengths between 850nm and 950nm. Since the SRBD utilizes the 900nm spectrum, OM5 exhibits significantly less modal dispersion at that wavelength compared to OM4, increasing the physical range.

• Q: Can this transceiver establish a link with a standard 100GBASE-SR4?

  A: Completely impossible. An SR4 uses 8 fiber strands to transmit a single 850nm NRZ signal. The SRBD uses 2 fiber strands to transmit dual-wavelength PAM4 signals. They utilize fundamentally opposed optical physics.