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K. Bharath kumar,
- Researcher, Oki Electric Company, R&D Division, Tokyo, Japan
Abstract
A circuit-theoretic approach to the generation of equivalent circuit models of optoelectronic and integrated photonic receiver applications is presented, especially optical cellular receiver systems. In a conventional circuit, the parameters of nano-inductance, nano-capacitance, impedance and scattering (S) parameters can be effectively applied to the analog equivalent representation of a conventional circuit. In a fiber-optic system, those parameters can be used in an integrated photonics and optoelectronic and nanoelectronic circuit as well, since although the photons are different from the electrons, the analog equivalent representation of the circuit can still be used. Substitution theorem is used to obtain equivalent representations of original DC networks to simulate and verify their behavior by equivalent circuits obtained from their corresponding source networks. Examples of equivalent networks are illustrated and tested with SPICE and other circuit-analysis methods. Specifically, two separate networks are reduced to Thevenin equivalents and then added together into a single equivalent network with a single Thevenin voltage and the equivalent resistive and/or impedance parameters. The same conventional method to determine Thevenin resistance and impedance is also included for frequency dependent and DC networks. Also, two dependent-source models present in PSpice/Spice2 are used to model dependent sources in the equivalent networks. The proposed approach is verified by suitable energizing of the external terminals by energy sources and the evaluation of the responses obtained from the external terminals, through SPICE simulations using algebraic addition and subtraction. A further verification is done with DC excitation with fractional Thevenin voltage values. Systematic use of the circuit-equivalence principles and of circuit simulation using the SPICE program was shown to be a practical way to analyze and realize equivalent optoelectronic circuits for semiconductor-integrated amplifier and opto- cellular receiver applications.
Keywords: Thevenin Equivalent Circuit; Optoelectronic Receivers; Integrated Photonics; SPICE Circuit Simulation; Optical Cellular Communication
[This article belongs to Trends in Opto-electro & Optical Communication ]
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Trends in Opto-electro & Optical Communication
| Volume | 16 | |
| Issue | 02 | |
| Received | 17/09/2026 | |
| Accepted | 18/09/2026 | |
| Published | 24/09/2026 | |
| Publication Time | 7 Days |