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科研机构
大连理工大学 [1]
长春光学精密机械与物... [1]
上海大学 [1]
内容类型
会议论文 [3]
发表日期
2004 [3]
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发表日期:2004
内容类型:会议论文
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Study on optical parts of MOEMS optical switch with low insertion loss (EI CONFERENCE)
会议论文
MEMS/MOEMS Technologies and Applications II, November 10, 2004 - November 12, 2004, Beijing, China
Ming A.
;
Liang J.
;
Lan W.
;
Dong W.
;
Yao J.
;
Wang W.
;
Le Z.
;
Chen W.
;
Wang L.
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  |  
浏览/下载:22/0
  |  
提交时间:2013/03/25
We study insertion losses of optical switch when the laser beam is propagating during the free space between two single mode fibers (SMFs) and the related assemblage challenges
Then a new packaging structure is developed for the hybrid-integration of free-space MOEMS (micro-opto-electro-mechanical systems) chip with a silicon micromachined submount to improve alignment accuracy. The submount is designed to accommodate various free-space MOEMS chips with minimal active optical alignment
thus reducing the packaging cost. The silicon submount has a central recess to place the MOEMS chip in
sixteen V-grooves for optical fibers
and micropits for micro ball lenses
all bulk micromachined at the same time by a single anisotropic wet etching step. A corner compensation technique is employed to prevent erosion of the convex corners
where different geometries meet. Through this assembling method
the fiber
micro ball lens can be aligned preciously thus reduced lateral and angular misalignment between them. Then total insertion losses can be decreased.
Crystalline behaviour and magnetic properties of Nd55Fe30Al10Dy5 bulk metallic glasses alloy
会议论文
RARE METAL MATERIALS AND ENGINEERING, 2004-06-01
作者:
Xu, H[1]
;
Tan, XH[2]
;
Dong, YD[3]
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  |  
浏览/下载:2/0
  |  
提交时间:2019/05/10
bulk metallic glasses alloy
hard magnetic properties
soft magnetic properties
Formulae for computing bulk-solid pressure in squat silos
会议论文
8th International Symposium on Structural Engineering for Young Experts, Xian, PEOPLES R CHINA
作者:
Yuan, F
;
Wang, FM
;
Shao, X
;
Gao, XN
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浏览/下载:11/0
  |  
提交时间:2020/01/02
squat circular silos
bulk material
wall pressure
plane of rupture
code
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