By Francisco Aznar
This e-book describes optical receiver suggestions built-in in normal CMOS know-how, achieving high-speed short-range transmission inside cost effective constraints. those thoughts aid brief succeed in functions, akin to neighborhood zone networks, fiber-to-the-home and multimedia structures in autos and houses. The authors convey the way to enforce the optical front-end within the comparable expertise because the next electronic circuitry, resulting in integration of the whole receiver process within the similar chip. The presentation specializes in CMOS receiver layout focusing on gigabit transmission alongside a reasonably cheap, standardized plastic optical fiber as much as 50m in size. This e-book encompasses a unique research of CMOS optical receiver layout – from development blocks to the process level.
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This booklet describes optical receiver recommendations built-in in commonplace CMOS know-how, reaching high-speed short-range transmission inside low-cost constraints. those suggestions aid brief achieve purposes, equivalent to neighborhood zone networks, fiber-to-the-home and multimedia structures in autos and houses.
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Extra info for CMOS Receiver Front-ends for Gigabit Short-Range Optical Communications
3 Photodiode and Front-End The power-modulated signal transmitted through the optical fiber must be converted to an electrical signal to be processed electronically. A simplified receiver block diagram, shown in Fig. 23, is formed by a photodiode that converts the input light into a current, and a front-end that provides an output voltage depending on the input current, formed by a transimpedance amplifier (TIA), a post-amplifier (PA), and, depending on the application, an equalizer (EQ) (Chen et al.
Finally, the serial signal is demultiplexed to process the data in parallel, according to a digital word with determinate word length and/or to divide the signal for several users. 4 Key Parameters In this section, the key parameters of an optical signal transmission from receiver point of view are analyzed, namely, the bit error ratio, sensitivity, and dynamic range. They are defined in terms of input power to the receiver; however, they are determined by simulations or by experimentally measuring the signal at the output of the receiver.
3 Plastic Optical Fibers The first POF were manufactured as early as the late 1960 s, when the GOF were developed. However, long-haul applications were dominated by GOF due to the lower attenuation while the requirements of short-reach transmission were fulfilled by cooper cables. There was hardly any demand for an optical medium for high data rates and small distances so that the development of the POF was slowed down for many years. Nowadays, data transmission at multi-gigabit rate over a few meters is demanded, making POF interesting.