Analog intersatellite communication with frequency-modulated light. Part 1. Noise theory.

Area of Science:

• Electrical Engineering
• Optical Communications
• Signal Processing

Background:

• Noise analysis is crucial for optimizing optical frequency modulation (FM) systems.
• Existing models by Middleton and Rice provide foundational understanding but require extensions for modern wideband systems.
• Understanding noise spectral density is key to system performance.

Purpose of the Study:

• To present a detailed analysis of noise properties in wideband optical FM systems.
• To extend foundational noise analysis equations for contemporary FM system applications.
• To provide a generalized method for determining noise spectral density under diverse system conditions.

Main Methods:

• Extending established noise analysis equations from Middleton and Rice.
• Developing generalized mathematical frameworks for noise spectral density calculation.
• Analyzing noise performance across all degrees of limiting and modulation types.

Main Results:

• Derived generalized equations for noise spectral density in wideband optical FM systems.
• The equations are applicable to systems with and without sinusoidal frequency modulation.
• The analysis covers all degrees of limiting, offering comprehensive noise characterization.

Conclusions:

• The presented equations offer a versatile tool for analyzing noise in various FM systems, including optical, radio, and microwave.
• These results enable precise prediction of noise spectral density, crucial for system design and performance optimization.
• The generalized approach ensures applicability across a wide range of FM system configurations and operating parameters.