An Investigation and Reduction of Electro-Optical Noise in Tunable Diode Laser

Samira Mahdi, Youhua Chen, Gary Anderson


A double FFT (DFFT) procedure is developed to reduce the effect of 1/f noise in the spectrum of Distribution FeedBack (DFB) tunable diode laser. Simulations and experimental results are preformed. An obvious effectiveness of the double FFT on the 1/f noise spectrum has been observed. The 1/f noise was monitored in the three terminals. A linear fitting of the 1/f was verified for Single FFT (SFFT) and (DFFT) to calculate the Frequency Exponent Factor (FEF) ? and the amplitude of 1/f noise.

Keywords: Fast Fourier transformation, tunable diode laser, Double Fast Fourier Transform

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ISSN (Paper)2224-719X ISSN (Online)2225-0638

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