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长春光学精密机械与物... [1]
天津大学 [1]
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1985 [1]
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中欧汽车加速噪声标准测量方法差异分析及测量结果对比
期刊论文
汽车工程学报, 2019, 卷号: 第5期, 页码: 313-319
作者:
谢东明
;
李淑英
;
冯屹
;
邓国勇
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浏览/下载:2/0
  |  
提交时间:2019/11/26
汽车加速噪声
测量方法
GB
1495
ECE
R51
差异分析
Low drive-voltage and high-bandwidth electro-optic modulators based on BaTiO3 thin-film waveguides (EI CONFERENCE)
会议论文
Science and Technology of Dielectrics for Active and Passive Photonic Devices - 210th Electrochemical Society Meeting, October 29, 2006 - November 3, 2006, Cancun, Mexico
Sun D. G.
;
Fu X. H.
;
Liu Z. F.
;
Ho S. T.
;
Wessels B. W.
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浏览/下载:31/0
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提交时间:2013/03/25
We investigated electro-optic modulator structures to target low drive voltage
high-speed modulation
and small device size with c-axis grown BaTiO3/MgO ferro-electric thin films. In this study
the calculations are focused on the ideal thin film with a quadratic relation between the half-wave drive voltage V and the interaction length L in the electro-optic modulation case we obtained in previous work. With the quadratic electro-optic modulating relation and the optimal rib waveguide structure of BaTiO3/MgO thin films
the frequency-voltage-size performances for 2.5GHz
10GHz
40GHz
and 100GHz modulation bandwidths have been obtained under half-wave drive voltages of 0.8V
1.6V
3.0V and 4.8V
respectively
for the ideal film with r51=730 pm/V at 1550nm wavelength
where both the phase velocity matching condition and the conductor induced microwave attenuation are considered. The required device lengths to achieve these four typical values of modulation bandwidth are 3.3 mm
0.8 mm
0.4 mm and 0.2 mm
respectively. With the c-axis grown BaTiO3/MgO crystal thin films and the quadratic electro-optic modulating relation
an electro-optic coefficient of reff=180 pm/V for the c-axis grown BaTiO3/MgO ferro-electric thin films was measured
which is relatively far from the ideal value of r51=560 pm/V. copyright The Electrochemical Society.
在PCR-DGGE研究土壤微生物多样性中应用GC发卡结构的效应
期刊论文
生态学报, 2003, 卷号: 1, 期号: 10, 页码: 2170-2175
罗海峰
;
齐鸿雁
;
薛凯
;
王晓谊
;
王川
;
张洪勋
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浏览/下载:13/0
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提交时间:2015/06/05
PCR-DGGE
微生物多样性
GC发卡结构
Laser modulator
专利
专利号: JP1985233978A, 申请日期: 1985-11-20, 公开日期: 1985-11-20
作者:
NOZAKI TAKESHI
;
MIURA KUNIHIKO
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浏览/下载:9/0
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提交时间:2019/12/31
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