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Effect of Optical Feedback on the Modulation Properties of AlGaInP Semiconductor Laser

Musab Ahmed · University of Mosul, College of Education for Pure Science · 2008

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Author / responsible party
Musab Ahmed
Publisher
University of Mosul, College of Education for Pure Science
Year
2008
ISSN
1812-125X
ISSN
1812-125X
Language
English
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Abstract<br /> Effect of optical feedback (O.F) on AlGaInP semiconductor laser properties and intensity modulation has been studied experimentally. Threshold current of semiconductor laser decreased 1mA when O.F equal to 160W , while there is no significant decreases observed in threshold current both when increasing O.F above that value or less than it. Influence of O.F on amplitude modulation spectrum at frequencies modulation (0.123,0.246, 0.546, 1.2)MHz has been studied. Fundamentals harmonic spectrum peaks increased with O.F especially at frequency modulation (1.2)MHz , whereas opposite effect of O.F observed on Fundamentals harmonic spectrum peaks at frequency 132kHz, since it decreased with O.F . O.F participate in decreasing of relative intensity noise (RIN) just at frequencies modulation(0.264, 0.546, 1.2)MHz with appearance of Flicker noise at frequency 132kHz. Signal to noise ratio (SNR) increased with O.F especially at frequency modulation equal to 1.2MHz has been observed.

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APA 7

Ahmed, M. (2008). Effect of Optical Feedback on the Modulation Properties of AlGaInP Semiconductor Laser. https://doi.org/10.33899/edusj.2008.51330

MLA

Ahmed, Musab. "Effect of Optical Feedback on the Modulation Properties of AlGaInP Semiconductor Laser." 2008. https://doi.org/10.33899/edusj.2008.51330.

Chicago

Ahmed, Musab. 2008. "Effect of Optical Feedback on the Modulation Properties of AlGaInP Semiconductor Laser.". https://doi.org/10.33899/edusj.2008.51330.

Harvard

Ahmed, M. 2008, Effect of Optical Feedback on the Modulation Properties of AlGaInP Semiconductor Laser, University of Mosul, College of Education for Pure Science, available at: https://doi.org/10.33899/edusj.2008.51330 [Accessed 8 Aug. 2026].

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Title
Effect of Optical Feedback on the Modulation Properties of AlGaInP Semiconductor Laser
Author / contributors
Musab Ahmed
Publisher
University of Mosul, College of Education for Pure Science
Publication year
2008
ISSN
1812-125X
ISSN
1812-125X
Language
English

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optical feedback; semiconductor laser; modulation properties of algainp
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