1.244-Gb/s 32-channel transmission using a shelf-mounted continuous-phase FSK optical heterodyne system

Tsushima, Hiroaki; Sasaki, Shinya; Kuboki, K.; Kitajima, S.; Takeyari, R.; Okai, M.

doi:10.1109/50.144918

Cited by 12 publications

(3 citation statements)

References 18 publications

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“…Strategies to mitigate flooding in PEMFCs involve the use of MPLs with large voids [ 51,52 ] comprising both naturally formed structures (pores [ 53,54 ] and cracks [ 55–58 ] ) and artificially designed architectures (holes [ 59 ] and grooves [ 60 ] ). These bigger voids in the MPLs exhibit a smaller capillary pressure and hydrodynamic resistance compared to that of micropores.…”

Section: Introductionmentioning

confidence: 99%

“…In several works, the transport of the liquid electrolyte through the entire GDE (further referred to as electrolyte perspiration) was reported. [ 37–39,41,66,68,70 ] It is likely—especially based on what was said above about PEMFCs [ 51–60 ] —that the electrolyte perspiration through larger structures in the MPL involving cracks can prevent or at least delay the flooding of the micropores.…”

Section: Introductionmentioning

confidence: 99%

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Cracks as Efficient Tools to Mitigate Flooding in Gas Diffusion Electrodes Used for the Electrochemical Reduction of Carbon Dioxide

Kong

Liu

et al. 2022

Small Methods

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The advantage of employing gas diffusion electrodes (GDEs) in carbon dioxide reduction electrolyzers is that they allow CO2 to reach the catalyst in gaseous state, enabling current densities that are orders of magnitude larger than what is achievable in standard H‐type cells. The gain in the reaction rate comes, however, at the cost of stability issues related to flooding that occurs when excess electrolyte permeates the micropores of the GDE, effectively blocking the access of CO2 to the catalyst. For electrolyzers operated with alkaline electrolytes, flooding leaves clear traces within the GDE in the form of precipitated potassium (hydrogen)carbonates. By analyzing the amount and distribution of precipitates, and by quantifying potassium salts transported through the GDE during operation (electrolyte perspiration), important information can be gained with regard to the extent and means of flooding. In this work, a novel combination of energy dispersive X‐ray and inductively coupled plasma mass spectrometry based methods is employed to study flooding‐related phenomena in GDEs differing in the abundance of cracks in the microporous layer. It is concluded that cracks play an important role in the electrolyte management of CO2 electrolyzers, and that electrolyte perspiration through cracks is paramount in avoiding flooding‐related performance drops.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cracks as Efficient Tools to Mitigate Flooding in Gas Diffusion Electrodes Used for the Electrochemical Reduction of Carbon Dioxide

Kong

Liu

et al. 2022

Small Methods

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“…For stable operation, each of almost identical 1.55 m LDs was packed into a module together with a thermocooler device, a thermistor, and an optical isolator giving more than 60 dB isolation. 9 The opa͒ Electronic mail: ketanaka@ae.titech.ac.jp b͒ Also at Kanagawa Academy of Science and Technology ͑KAST͒, KSP East Room, 3-2-1 Sakado, Takatsu-ku, Kawasaki 213, Japan.…”

mentioning

confidence: 99%

Highly sensitive and wideband optical detection in patterned YBa2Cu3O7−δ thin films

Tanaka

Arikawa

Sekine

et al. 1996

Applied Physics Letters

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622 Mbit/s‐sixteen‐channel FDM coherent optical transmission system using two‐section MQW DFB‐LDs

Matsukawa

Shimizu

Shimomura

et al. 1995

Electron. Comm. Jpn. Pt. I

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A light source and optical frequency control t e c h q u e needed for realizing the optical frequency division multiplexing transmission (Optical FDM) I S Random channels could selectively be received with a receiver sensitivity of -39.3 dBm. It was verified that 16 channels of 622 Mbit/s lgh-vision (Japanese standard HDTV) signal could be transmitted through 110 km of 1.3 pm zero dispersion fiber without signal degradation.

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1.244-Gb/s 32-channel transmission using a shelf-mounted continuous-phase FSK optical heterodyne system

Cited by 12 publications

References 18 publications

Cracks as Efficient Tools to Mitigate Flooding in Gas Diffusion Electrodes Used for the Electrochemical Reduction of Carbon Dioxide

Cracks as Efficient Tools to Mitigate Flooding in Gas Diffusion Electrodes Used for the Electrochemical Reduction of Carbon Dioxide

Highly sensitive and wideband optical detection in patterned YBa2Cu3O7−δ thin films

622 Mbit/s‐sixteen‐channel FDM coherent optical transmission system using two‐section MQW DFB‐LDs

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