| Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2017: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2016: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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| Outline of Final Research Achievements |
We proposed and researched characteristics of two demultiplexers for variable optical orthogonal frequency division multiplexing (OFDM) signals, which were both based on an optical star coupler-type Fourier transform circuit. The demultiplexer included an array of optical switches or an array of optical tunable couplers. We mainly investigated the tunable coupler-type optical OFDM demultiplexer, which showed better characteristics than the switch-type OFDM demultiplexer in terms of low loss variation in the tunable mode and so on. The tunable coupler-type OFDM demultiplexer could demultiplex variable optical OFDM signals ranging from 20 to 100 Gbit/s.
In addition, we also investigated an add/drop multiplexer for variable optical OFDM signals, and realized a tunable optical OFDM demultiplexer based on the time lens method.
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