High Extinction Ratio Temperature Insensitive Multi Wavelength Superfluorescent Fiber Source

摘要

In this paper, a ring cavity feedback structure spectrum sliced high temperature stability comblike multi-wavelength source was demonstrated for the first time. The multi-wavelength source covered the total amplified spontaneous emission of erbium-doped fiber. By partially feedback diffracted spontaneous emission into erbium doped fiber medium, output spectrum of such a multi-wavelength source was larger than the simple spectrum sliced source by 7.5dB, its extinction ratio up to 20 dB and with high stability of wavelength position. High extinction ratio and stable output spectrum of the multi-wavelength fiber source enable it to replace the DFB laser array with wavelength locker in DWDM application.