We propose a TFDM-PON with simplified ONU structure and subcarrier allocation design that allows flexible single/multiple subcarrier reception. At $25-\mathrm {k ...

Bayer 04 are away to SG Sonnenhof Großaspach in the first round of the 2025/26 DFB Pokal. The match is on Friday, 15 August (kick-off: 18:00 CEST) at the WIRmachenDRUCK Arena. Read on for the latest ...

Optical pumping on the cesium (Cs) D1 transition at 894 nm, as compared to the Cs D2 line at 852 nm, can present advantages for e.g. Cs thermal beam atomic clocks or other atom-based sensors and ...

US balloon fiesta limits hot air from campaigns Saturday was the perfect day for this year's first mass ascension, as hundreds of balloons in all shapes and colors lifted off.

US Embassy opens in BerlinHistoric reunification talks for Cyprus' rival Greek and Turkish leaders The leaders of Cyprus' rival Greek and Turkish Cypriot communities met Friday in the buffer zone ...