Transmission Rate: The maximum speed the module supports (e., 1G, 10G, 25G, 100G, 400G). Critical for network bandwidth. Fiber Type: Single. Center Wavelength: The center wavelength of optical modules refers to the range of light waves utilized during the transmission of optical signals, measured in nanometers (nm). Commonly used wavelengths include 850nm, 1310nm, and 1550nm, as well as the CWDM wavelengths ranging from 1270nm to 1610nm. This user's guide provides information about Time-of-Flight (ToF) long range proximity and distance sensor system design. This document describes the detailed functionality of ToF proximity systems, explains the trade-offs involved in a typical ToF system and provides a step-by-step design flow. Before the advent of lasers, infr red and visible spectra were measured using wavelength techniques. Lasers have fractional linewidths approaching those of radio and micro- wave oscillators and have many orders of magnitude more. In this experiment you will use a light emitting diode (LED), a photomultiplier tube (PMT) and fast pulse circuitry to make a direct measurement of the speed of light by measuring the travel time of a light pulse over a path length of ~O (25) meters in the laboratory. Draw a sketch of the waveforms for a pulsed time-of-flight ranging system.