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Wavelength and power monitoring of DWDM systems using scanning F–P filter calibrated with a F–P laser |
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| Authors: | W H Chung H Y Tam M S Demokan P K A Wai C Lu |
| Institution: | a Photonics Research Center, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, People's Republic of China b Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR,, People's Republic of China c Division of Communication Engineering, School of Electrical and Electronics Engineering, Nanyang Technological University, Singapore 639798, Singapore |
| Abstract: | A novel technique to overcome the long-term drift and hysteresis of a scanning Fabry–Perot filter was developed and applied to wavelength and power monitoring of DWDM system. By using the comb peaks generated by a temperature-stabilized, near threshold-biased Fabry–Perot diode laser as wavelength reference for the scanning Fabry–Perot filter, wavelength and power measurement accuracy of better than ±10 pm and 0.2 dB, respectively, were achieved. |
| Keywords: | Wavelength monitoring Optical power monitoring WDM applications |
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