Long wavelength 1310nm Singlemode Fiber optic TX and RX modules: PD-LD, Inc offers separate TX and RX modules which are designed to be backward compatible with industry standard sources and detectors used for single mode fiber applications. This form factor allows designers to offer singlemode fiber performance in applications, which currently use short wavelength (850nm) devices in identical form facto packages. PDF Data Sheet for Sugar Cubes: 1310nm Singlemode TX and RX modules Fiber Coupled ELED's PD-LD, Inc. offers 1310nm ELED's in ready to use, fiber coupled packages, including FC, ST and SC receptacles. These 1310nm Edge Emitting Type devices have been optimized for coupling into 9/125 micron optical fiber for use in singlemode fiber optic applications PDF Data Sheet for PELED Series: 1310nm Edge Light Emitting Diodes PD-LD, Inc offers a variety of standard Surface-Emitting LED's (SLED's) in ready to use, fiber-coupled packages, including FC, ST, SC and other receptacles, as well as fiber pigtailed units.