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The regenerator is a key component that transfers energy between heat and work. The conversion efficiency is significantly influenced by the acoustic field in the regenerator. Much effort has been spent to quantitatively determine this influence, but few comprehensive experimental verifications have been performed because of difficulties in modulating and measuring the acoustic field. In this paper,...
We proposed a nonbinary byte-interleaved coded-modulation scheme with inner and outer turbo-like iterative decoder. The net coding gain is 0.6dB higher than the state-of-the-art binary SPC-LDPC-based turbo-product counterpart, with adjustable iterations and lower error-floor.
Movement-related field potentials can be extracted and processed in real-time with magnetoencephalography (MEG) and used for brain machine interfacing (BMI). However, due to its immense sensitivity to magnetic fields, MEG is prone to a low signal to noise ratio. It is therefore important to collect enough initial data to appropriately characterize motor-related activity and to ensure that decoders...
This talk will introduce the fabrication methods of electro-absorption modulated lasers (EMLs) and the latest results of EMLs fabricated by a novel technology named selective area growth double-stack active layer (SAG-DSAL) developed by the authors.
We present a scalable and low latency optical packet switch for DPSK and OFDM packets. Results show error-free operation of 1 ?? 64 optical packet switch for 12 ?? 10 Gb/s DPSK packets and 12 ?? 40 Gb/s OFDM packet.
We present fabrication of 1.3-µm InAs QD-VCSELs and arrays. The output power of single VCSEL exceeds 1.2 mW. Modulation bandwidth of 2.65 GHz and 2.5 GHz are achieved for single-mode and multi-mode VCSELs. Maximum output power of 28 mW is demonstrated for VCSEL arrays with threshold current of 50 mA.
It is expected that Wavelength Division Multiplex (WDM) fiber optic communications will be providing the high-speed backbone for the networks of the future. At the transmitter end, external laser modulation remains the approach of choice when high quality performance with reduced chirp is required at extra-high frequencies. Semiconductor based external laser modulators have the advantage of potential...
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