100G QSFP BIDI & 100G Dual/Duplex QSFP

Understand the key differences between 100G QSFP BIDI and 100G QSFP Dual/Duplex optical transceivers for Data Center, ISP, and Telecom networking.

What is the Difference?

100G QSFP transceivers are widely used in high-speed fiber optic networking. The main difference between BIDI and Dual/Duplex QSFP is the number of fiber cores used, transmission technology, cost, and installation method.

100G QSFP BIDI

100G QSFP BIDI (Bi-Directional) transceivers use only one core fiber cable for both transmitting (Tx) and receiving (Rx) signals.

Inside the module, WDM (Wavelength Division Multiplexing) chipset technology is used to separate two different wavelengths for Tx and Rx communication.

  • Uses only 1 core fiber
  • Single LC connector port
  • SM (Single Mode) fiber supported
  • Higher cost compared to duplex QSFP
  • Transmission distance up to 80km
  • Must be purchased in matched pair
  • Ideal for fiber-saving applications

100G QSFP Dual / Duplex

100G QSFP Dual or Duplex modules use two fiber cores for communication.

One fiber core is used for transmission (Tx) and another fiber core is used for receiving (Rx).

  • Uses 2 core fiber cable
  • Dual LC fiber connection
  • Available in MM and SM versions
  • Lower cost than BIDI modules
  • Transmission distance up to 60km
  • Can purchase single piece or pair
  • Easy replacement and flexible deployment

Quick Comparison Table

Feature 100G QSFP BIDI 100G QSFP Dual/Duplex
Fiber Core Used 1 Core 2 Core
Fiber Type Single Mode MM or SM
Connector Single LC Dual LC
Distance Up to 80km Up to 60km
Cost Higher Lower
Purchase Type Must buy in pair Can buy single or pair

Need 100G QSFP Modules in Nepal?

D-TECH supplies high-quality 100G QSFP BIDI, Dual, Duplex, LR4, and Data Center optical transceivers for ISP, FTTH, Telecom, and Enterprise networks across Nepal.

🌐 www.dtechtrading.com.np
📍 Lalitpur | Itahari | Butwal
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