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1751A 1550 nm DWDM DFB Laser Module, QAM Application

The 1751A laser module is a Dense Wavelength-Division Multiplexing (DWDM) laser for analog applications. It features a distributed feedback chip that has been designed specifically for Radio Frequency (RF) applications. The 1751A laser module has a wide temperature range for reliable performance in harsh node environments and narrow transmitter designs. It also features low adiabatic chirp to maximize signal quality in short and long lengths of fiber. The laser’s excellent inherent linearity minimizes degradation of the broadcast signals caused by quadrature amplitude modulated (QAM) channels. The versatile 1751A laser module reduces cable network architecture fiber needs and lessens equipment reqirements in the hub.

The 1751A is available in a wide range of standard ITU wavelengths. The lasers are offered as either forward-path (40 MHz-1 GHz) or return-path (5 MHz-210 MHz) modules.


  • Standard ITU grid wavelengths
  • Advanced analog chip design
  • Reduces equipment requirements in the hub
  • Telcordia Technologies® 468 Compliant
  • Wide temperature range – stable even in harsh environments


  • Node capability
  • Narrow transmitter housing
  • Networks with limited fiber
  • Architectures using separate optical wavelengths to carry targeted services