Signal and crosstalk analysis using optical convolution of transmitted optical signals

Ikechi A. Ukaegbu; Anel Poluektova; Elochukwu Onyejegbu; Aresh Dadlani; Hyo-Hoon Park

doi:10.1117/12.2505099

26 February 2019 Signal and crosstalk analysis using optical convolution of transmitted optical signals

Ikechi A. Ukaegbu, Anel Poluektova, Elochukwu Onyejegbu, Aresh Dadlani, Hyo-Hoon Park

Proceedings Volume 10912, Physics and Simulation of Optoelectronic Devices XXVII; 1091219 (2019) https://doi.org/10.1117/12.2505099
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

An optical system which consists of a transmitter array, a fiber array, and a receiver array, experience some signal loss and crosstalk as the signals travel from the transmitter to the receiver. Signal loss and crosstalk occur at the interface between the light source (Vertical Cavity Surface Emitting Laser, or the VCSEL) and the fiber array, and also at the interface between the fiber array and the detector (photodetector). In order to obtain the real-time analysis of the transmitted and crosstalk signals, optical convolution is employed in this work. Optical convolution of the radiated signals (from the VCSEL) and the fiber array is performed to determine the signal intensity at the receiver end and also the amount of crosstalk in the array system. Transmitted signal intensity and crosstalk are essential for defining signal integrity and reliability during the packaging of optoelectronic transmitter and receiver modules in an optical system. A theoretical analysis of transmitted and crosstalk signals is performed with various separation distances between the transmitter modules and the fiber array and with a zero separation distance between the fiber array and the photodetector. The analysis is also performed for a top-emitting VCSEL (for the planar transmitter module) and bottom-emitting VCSEL (for the multi-chip transmitter module). The optical convolution allows us to obtain the real-time and the actual transmitted and crosstalk signals at the receiver end of an optical array system. It also provides optical system performance analysis.

Citation Download Citation

Ikechi A. Ukaegbu, Anel Poluektova, Elochukwu Onyejegbu, Aresh Dadlani, and Hyo-Hoon Park "Signal and crosstalk analysis using optical convolution of transmitted optical signals", Proc. SPIE 10912, Physics and Simulation of Optoelectronic Devices XXVII, 1091219 (26 February 2019); https://doi.org/10.1117/12.2505099

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KEYWORDS

Vertical cavity surface emitting lasers

Transmitters

Convolution

Receivers

Optoelectronics

Optical fibers

Gaussian beams

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