Matches in SemOpenAlex for { <https://semopenalex.org/work/W3021371570> ?p ?o ?g. }
- W3021371570 abstract "Publisher SummaryThis chapter provides an overview of fundamentals of optical transmitter design for fiber optic data communications. In particular, it emphasizes on the operating principles behind the three most common types of optical sources used for data communications: light-emitting diodes (LEDs), edge-emitting semiconductor laser diodes, and vertical cavity surface-emitting lasers (VCSELs). The chapter also provides a brief review of semiconductor properties. It is noted that the sources for fiber optic communications often operate at wavelengths near 1,300 or 1,550 nm. An optical source for fiber optic communications must exhibit a high radiance over a narrow band of wavelengths that coincide with the transmission window of the fiber, typically 0.8-1.55 μ m. The emissive area should be no greater than the core diameter of the fiber, and the distribution of incident radiation should match the numerical aperture of the fiber. Semiconductor sources generally satisfy these requirements by emission of light at a pn junction through the process of injection luminescence. For the range of wavelengths commonly used in data communications, the efficiency of both sources and detectors is determined by the bandgap energy. It is often desirable for the bandgap of the detectors to be slightly less than that of the source materials." @default.
- W3021371570 created "2020-05-13" @default.
- W3021371570 creator A5001669102 @default.
- W3021371570 creator A5013447917 @default.
- W3021371570 date "2002-01-01" @default.
- W3021371570 modified "2023-09-27" @default.
- W3021371570 title "Optical Sources" @default.
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