The transmitter 230 may be a semi-conductor device, such as, for example, a light-emitting diode (LED) or a laser diode. In some examples, the transmitter 230 may be a fiber laser or a solid state laser. Laser diodes may be directly modulated, or in other words, the light output may be controlled by a current applied directly to the transmitter 230. The transmitter 230 may be a single-mode laser diode that supports one optical mode, or the transmitter 230 may be a multimode laser diode that supports multiple-transverse optical modes. The transmitter 230 may receive a modulated communication signal 20 from a modulator (not shown), which in turn receives an electrical signal, and modulates the electrical signal. The transmitter 230 may receive the modulated electrical signal, convert the electrical signal into an optical communication beam, and output the optical communication beam into an optical fiber towards the optical system 250. The transmitter 230 is also configured to output a beacon beam 24 that allows one communication device to locate another. For example, transmitter 230a of the first communication device 200a may output a beacon beam 24a to locate the second communication device 200b and establish a communication link 22a with the second communication device 200b. The transmitter 230b of the second communication device 200b may similarly output a beacon beam 24b to locate and establish a communication link 22b with the first communication device 200a. As such, the communication link 22a, 22b may allow for communication signal 20 between the two communication devices 200a and 200b.