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Experimental investigation of polarisation rotation in semiconductor optical amplifiers
Kennedy, Brendan F.; Philippe, Severine; Landais, Pascal; Bradley, Ann Louise; Soto-Ortiz, Humberto
An experimental study of polarisation rotation in a semiconductor optical amplifier is presented. Two techniques are used to investigate the gain and birefringence along the two eigenmodes of the component waveguide, with and without injection. The first investigation is based on the residual reflectivity of the facet mirrors. From the modulation depth of polarisation resolved spectra, the gain and the refractive indices of these modes are determined. The second investigation takes into account the variation of the eigenmode gain and refractive indices as a function of injected power over the range 83.3 to 413 mW. The results of these two experiments are compared, and it is determined that the refractive index and the single-pass gain along the horizontal axis of the waveguide are higher than those along the vertical axis. Both gain and refractive index differences increase as a function of injected power in the sample under test. Furthermore, it is concluded that polarisation rotation in this component is heavily influenced by the power dependence of the relative gain in the TE and TM modes and birefringence.
Keyword(s): Optical communication; Photonics; Semiconductors; light polarisation; infrared spectra; optical rotation; semiconductor optical amplifiers; birefringence; optical waveguides; reflectivity; mirrors; optical modulation; refractive index
Publication Date:
Type: Other
Peer-Reviewed: Unknown
Language(s): English
Institution: Dublin City University
Citation(s): Kennedy, Brendan F. ORCID: 0000-0003-4782-0498 <>, Philippe, Severine, Landais, Pascal ORCID: 0000-0002-4807-0695 <>, Bradley, Ann Louise ORCID: 0000-0002-9399-8628 <> and Soto-Ortiz, Humberto (2004) Experimental investigation of polarisation rotation in semiconductor optical amplifiers. Optoelectronics, 151 (2). pp. 114-118. ISSN 1350-2433
Publisher(s): Institution of Engineering and Technology
File Format(s): application/pdf
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First Indexed: 2020-07-21 06:42:30 Last Updated: 2020-07-22 06:38:22