A linewidth refers to the width of a spectral line produced by an atom or molecule when it emits or absorbs light at a specific frequency. It is a measure of the range of frequencies over which the line can be observed. The linewidth provides information about the stability and collisions of the emitting or absorbing particles.

1. Return the two “Line” objects as an output argument from the “plot” function and then set the “LineWidth” property for each.

2. Use the “hold on” command to plot the two lines separately. Specify the line width by setting the “LineWidth” property to a name-value pair.

Carol F. Vezzetti has written:

'Bright-chromium linewidth standard, SRM 476, for calibration of optical microscope linewidth measuring systems' -- subject(s): Calibration, Chromium, Design and construction, Integrated circuits, Masks, Measurement, Microscope and microscopy, Microscopes, Microscopy, Optical measurements, Spectra, Standards

S. L. Palfrey has written:

'Monolithic narrow-linewidth InGaAsP semiconductor laser for coherent optical communications' -- subject(s): Semiconductor lasers, Laser communication systems

electrical signal can be converted to an optical sigal by using a LED or SOA(semiconductor optical amplifier). LED is the cheaper option but have the drawback of larger linewidth. Typically used for LAN (local area network). SOA produces an optical signal mostly by direct modulation tecnique .