20 GHz Bandwidth High Dynamic Range 1.3 μm Buried Heterostructure Laser Modules

Abstract

A 20 GHz bandwidth 1.3 μηι InGaAsP/InP StraightWall Mass-Transport Buried Heterostructure laser diode was developed to operate in a microwave fiber optic link. When used in a microwave link, the laser has a typical RF insertion loss of 37 dB, an equivalent input noise density less than -115dBm/Hz, a IdB compression dynamic range greater than 138 dB-Hz, and a spurious signal free dynamic range of 97 dB · Hz 2 ' 3 . The wide bandwidth, high dynamic range and low-noise of the laser module were obtained through the design of the package, the subcarrier and the laser chip. The noise and modulation properties of these lasers make them attractive sources for analog and microwave fiber optic applications.