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Stabilizing DOP and ellipticity of a grating coupled WTL with A‐D‐A SOP feedback‐control circuit
Author(s) -
Hsu YuChia,
Chiu JianLin,
Tsao ShyhLin
Publication year - 2005
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.20924
Subject(s) - microwave , grating , polarization (electrochemistry) , laser , optics , wavelength , materials science , optoelectronics , distributed feedback laser , physics , engineering , telecommunications , chemistry
We demonstrate that an external‐cavity‐grating‐based wavelength tunable laser (WTL) can successfully operate at a stable power level with ellipticity and degree of polarization (DOP) under control. The variation range of the DOP can be improved from 65% to 15%. The ellipticity fluctuation can also be reduced by 30° in order to achieve high polarization quality for a wavelength tunable laser (WTL) source. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 46: 139–141, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20924