Optiwave software can be used in different industries and applications, including Fiber Optic Communication, Sensing, Pharma/Bio, Military & Satcom, Test & Measurement, Fundamental Research, Solar Panels, Components / Devices, etc..
OptiSystem is a comprehensive software design suite that enables users to plan, test, and simulate optical links in the transmission layer of modern optical networks.
OptiSPICE is the first circuit design software for analysis of integrated circuits including interactions of optical and electronic components. It allows for the design and simulation of opto-electronic circuits at the transistor level, from laser drivers to transimpedance amplifiers, optical interconnects and electronic equalizers.
OptiFDTD is a powerful, highly integrated, and user friendly CAD environment that enables the design and simulation of advanced passive and non-linear photonic components.
OptiBPM is a comprehensive CAD environment used for the design of complex optical waveguides. Perform guiding, coupling, switching, splitting, multiplexing, and demultiplexing of optical signals in photonic devices.
OptiFiber The optimal design of a given optical communication system depends directly on the choice of fiber parameters. OptiFiber uses numerical mode solvers and other models specialized to fibers for calculating dispersion, losses, birefringence, and PMD.
Emerging as a de facto standard over the last decade, OptiGrating has delivered powerful and user friendly design software for modeling integrated and fiber optic devices that incorporate optical gratings.
OptiConverge is a collaborative integration framework that seamlessly combines two or more Optiwave products (e.g., OptiSystem, OptiSPICE, OptiFDTD, etc.) and other third party products into unified solutions. Designed to streamline complex workflows, it empowers users to achieve their goals faster by harnessing the collective power of our trusted Optiwave tools.
Optiwave software can be used in different industries and applications, including Fiber Optic Communication, Sensing, Pharma/Bio, Military & Satcom, Test & Measurement, Fundamental Research, Solar Panels, Components / Devices, etc..
OptiSystem is a comprehensive software design suite that enables users to plan, test, and simulate optical links in the transmission layer of modern optical networks.
OptiSPICE is the first circuit design software for analysis of integrated circuits including interactions of optical and electronic components. It allows for the design and simulation of opto-electronic circuits at the transistor level, from laser drivers to transimpedance amplifiers, optical interconnects and electronic equalizers.
OptiFDTD is a powerful, highly integrated, and user friendly CAD environment that enables the design and simulation of advanced passive and non-linear photonic components.
OptiBPM is a comprehensive CAD environment used for the design of complex optical waveguides. Perform guiding, coupling, switching, splitting, multiplexing, and demultiplexing of optical signals in photonic devices.
OptiFiber The optimal design of a given optical communication system depends directly on the choice of fiber parameters. OptiFiber uses numerical mode solvers and other models specialized to fibers for calculating dispersion, losses, birefringence, and PMD.
Emerging as a de facto standard over the last decade, OptiGrating has delivered powerful and user friendly design software for modeling integrated and fiber optic devices that incorporate optical gratings.
OptiConverge is a collaborative integration framework that seamlessly combines two or more Optiwave products (e.g., OptiSystem, OptiSPICE, OptiFDTD, etc.) and other third party products into unified solutions. Designed to streamline complex workflows, it empowers users to achieve their goals faster by harnessing the collective power of our trusted Optiwave tools.
Home » Tutorials » Receiver Noise—Shot Noise Enhancement with APD
Compatibility:
Optical receivers with APD generally provide a higher SNR for the same incident optical power. The improvement in the SNR is due to the internal gain that increases the photocurrent by the multiplication factor M.
Figure 1: Receiver PIN x APD
The APD photodetector systems (see Figure 2) has a Q factor higher that the one with PIN photodetector for a multiplication factor of 3 (see Figure 3).
Figure 2: APD Q Factor
Figure 3: PIN Q Factor
If we increase the multiplication factor, there is a point at which the shot noise degrades the system performance, therefore, it is important to find the optimum APD gain.
If you run the same simulation and vary the value of the multiplication factor, you can see the evolution of the Q factor in Figure 4.
Figure 4: Q factor x APD Gain
For a gain higher of 16, there is no advantage to using the APD, because it will not improve the receiver sensitivity.