NDLI: Distortion spectrum of laser intensity modulation

Content Provider	IEEE Xplore Digital Library
Author	Rainal, A.J.
Copyright Year	1972
Abstract	The simplest and most economical method for transforming many channels of high quality video and audio analog signals into an optical signal makes use of subcarrier multiplexing. In this multiplexing scheme, a broadband analog signal consisting of the sum of many modulated subcarriers (one for each channel), is applied to amplitude modulate the intensity of a laser for transmission by optical fiber. Laser intensity modulation is also attractive for interconnecting broadband RF signals using optical fiber as, for example, between a cellular base station and its remote antenna sites, especially for implementing microcells. A fundamental, limiting transmission impairment is the nonlinear distortion of the clipped laser intensity resulting from occasional signal excursions below the laser threshold. The purpose of this paper is to apply noise theory along with numerical analysis, involving fast Fourier transforms, to determine some basic characteristics of the nonlinear distortion associated with a fully loaded system. In particular, the exact distortion spectrum and the carrier-to-nonlinear distortion ratio are determined as a function of the dynamic range and bandwidth of the multiplexed signal, and the total RMS modulation index /spl mu/. 2/spl mu//sup 2/ equals the product of the number of channels and the square of the optical modulation index per channel. The exact carrier-to-nonlinear distortion ratio per channel when all or specific orders of distortion are present is also treated. The results are presented in graphical form and they agree reasonably well with earlier theoretical and experimental works. All of the results apply to both a directly modulated laser or an externally modulated laser.<>
Starting Page	1644
Ending Page	1652
Page Count	9
File Size	706805
File Format	PDF
ISSN	00906778
Volume Number	43
Issue Number	2 and 3 and 4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Laser noise Intensity modulation Nonlinear distortion Optical distortion Fiber lasers Laser theory Optical modulation Amplitude modulation Optical fibers Broadband antennas
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Laser intensity modulation as a clipped Gaussian process

Asymptotic distortion spectrum of clipped, DC-biased, Gaussian noise (optical communication)

Spectrum of the intensity of modulated noisy light after propagation in dispersive fiber

Fiber Optic Intermodulation Distortion

Nonlinear distortions due to the dispersive transmission of SCM optical signals in the presence of chirping effect: an accurate analysis

Noise and Distortion Characteristics of Semiconductor Lasers in Optical Fiber Communication Systems

Intensity noise of semiconductor laser diodes in fiber optic analog video transmission

Nonlinearity and Its Compensation of Semiconductor Laser Diodes for Analog Intensity Modulation Systems

Optical frequency modulation links: Theory and experiments

Distortion spectrum of laser intensity modulation

Similar Documents

Laser intensity modulation as a clipped Gaussian process

Asymptotic distortion spectrum of clipped, DC-biased, Gaussian noise (optical communication)

Spectrum of the intensity of modulated noisy light after propagation in dispersive fiber

Fiber Optic Intermodulation Distortion

Nonlinear distortions due to the dispersive transmission of SCM optical signals in the presence of chirping effect: an accurate analysis

Noise and Distortion Characteristics of Semiconductor Lasers in Optical Fiber Communication Systems

Intensity noise of semiconductor laser diodes in fiber optic analog video transmission

Nonlinearity and Its Compensation of Semiconductor Laser Diodes for Analog Intensity Modulation Systems

Optical frequency modulation links: Theory and experiments

Distortion spectrum of laser intensity modulation