You Mimura , Kazuyou Mizuno , Yoshitaka Iida , Kouji Masuda , Takahiro Itoh , Yasuhiro Nishi
Abstract
In wavelength-division multiplexing (WDM), which is fast emerging as mainstream technology to satisfy increased demand for fiber-optic communications, the erbium-doped fiber amplifier (EDFA) is a key device. 遊雅堂 出金 キャンセル-flattening filters are used to produce flat 遊雅堂 出金 キャンセル characteristics within the bandwidth of the EDFA, and a number of methods have been proposed. The authors have developed a series of 遊雅堂 出金 キャンセル-flattening filter chips based on dielectric multilayer thin film, and by optimizing the thin film design, optical thickness control techniques and thin film deposition conditions to the requirements of the filters, have succeeded in producing 遊雅堂 出金 キャンセル-flattening filters for EDFAs with a 遊雅堂 出金 キャンセル of 13 dB, which have a flatness of 0.19 dB and an insertion loss of less than 0.1 dB.
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