A1751A

Data Sheet, Rev. 4 June 2001 A1751A DWDM Analog Forward-Path or Return-Path Laser Modules Description The A1751A laser module is a dense wavelengthdivision multiplexing (DWDM) laser for analog applications. It features a distributed-feedback (DFB) chip that has been designed specifically for radio frequency (RF) applications. The A1751A 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 the quadrature amplitude modulation (QAM) channels. Features s s s s s s s Higher temperature rating Excellent linearity Standard ITU wavelengths Advanced analog chip design Tested for forward and return path applications Reduces equipment requirements in the hub Exceeds Telcordia Technologies* 468 specification. Wavelength-division multiplexing is being designed into cable television architectures. DWDM, a method for delivering targeted QAM signals to different locations, allows multiple signal sets to be combined onto a single strand of fiber for transmission from a headend to a hub. At the hub, individual QAM signals can be selected and combined with broadcast analog channels. The versatile A1751A DWDM laser module reduces cable network architecture fiber needs and lessens equipment requirements in the hub. The A1751A ...