نتایج جستجو برای: line tunable gain

تعداد نتایج: 595116  

2014
Johannes STURM Marcus GROINIG Xinbo XIANG

The presented paper includes the design and implementation of a 65 nm CMOS low-noise amplifier (LNA) based on inductive source degeneration. The amplifier is realized with an active balun enabling a single-ended input which is an important requirement for low-cost system on chip implementations. The LNA has a tunable bandpass characteristic from 4.7 GHz up to 5.6 GHz and a continuously tunable ...

Journal: :Optics letters 2016
Nurmemet Abdukerim Lizhu Li Martin Rochette

We report the first chalcogenide-based optical parametric oscillator (OPO) relying on pure parametric gain. The all-fiber OPO operates in the wavelength range of 2 μm and is tunable over 290 nm from the combined Stokes and anti-Stokes contributions. The gain medium is a 10 cm long chalcogenide microwire made from a high modal confinement As2Se3 core with cyclo olefin polym...

Journal: :Optics express 2013
Kavita Devi S Chaitanya Kumar M Ebrahim-Zadeh

We report a continuous-wave (cw) source of tunable radiation across 333-345 nm in the ultraviolet (UV) using bismuth triborate, BiB₃O₆ (BIBO) as the nonlinear gain material. The source is based on internal sum-frequency-generation (SFG) in a cw singly-resonant optical parametric oscillator (OPO) pumped at 532 nm. The compact tunable source employs a 30-mm-long MgO:sPPLT crystal as the OPO gain ...

2010
Desheng Ma Fa Foster Dai Richard C. Jaeger David Irwin

This paper presents an 8-18GHz wideband receiver with superheterodyne topology. In order to save power, both RF and IF signals share the tunable transconductance stage. The IF output of the first mixer is fed to its tunable input stage for IF amplification in a recursive manner, which significantly enhances the gain tuning without increasing the power. The wideband receiver MMIC is implemented ...

Journal: :علوم دامی 0
افشین حیدری نیا دانشجوی دکتری تغذیه طیور دانشگاه زنجان محمد حسین شهیر عضو هیات علمی دانشگاه زنجان حمیدرضا طاهری عضو هیات علمی دانشگاه زنجان سیدعبداله حسینی عضو هیات علمی موسسه تحقیقات علوم دامی کشور

the aim of the present study was to determine the appropriate standardized ileal digestible lysine requirement to 49 day of olds in male but,6 turkey poults. experiment 1 and 2 were used  from 8-28 and 28-49 d-old respectively. one hundred sixty male but,6 turkeys in each experiment were used in a completely randomized design with eight treatments (8 levels of standardized ileal digestible lysi...

Journal: :Optics express 2010
Yitang Dai Yoshitomo Okawachi Amy C Turner-Foster Michal Lipson Alexander L Gaeta Chris Xu

We report experimental demonstration of an all-optical continuously tunable delay line based on parametric mixing with a total delay range of 7.34 mus. The bit-error rate performance of the delay line was characterized for a 10-Gb/s NRZ data channel. This result is enabled by cascading a discrete delay line that consists of 16 wavelength-dependent delays and a continuously tunable delay stage. ...

2013
Jun-Whee Kim Kyung-Jo Kim Min-Cheol Oh

For demonstrating widely tunable external cavity lasers operating for near-infrared (NIR) wavelength, a flexible polymer waveguide with an imbedded Bragg grating is incorporated. Due to the superior flexibility of the polymer material, the reflection wavelength of the Bragg grating is widely tunable by imposing tensile and compressive strains on the flexible Bragg grating. A third-order Bragg g...

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