Acta Optica Sinica, Volume. 19, Issue 10, 1315(1999)
Study on Fiber Grating Filters for Gain Flattening
The erbium doped fiber amplifier (EDFA) gain flattening filters were fabricated by writing long period gratings in hydrogen-loaded standard single-mode fibers using amplitude masks and a properly designed program controlled scanning exposure system. The gain variation of ±3 dB in an EDFA is reduced to ±0.3 dB over a bandwidth of 30 nm and the total extra insertion loss of the device is less then 0.3 dB.
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[in Chinese], [in Chinese], [in Chinese], [in Chinese], [in Chinese]. Study on Fiber Grating Filters for Gain Flattening[J]. Acta Optica Sinica, 1999, 19(10): 1315