DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | Shin, Jung-H. | - |
dc.contributor.advisor | 신중훈 | - |
dc.contributor.author | Lee, Jin-Ku | - |
dc.contributor.author | 이진구 | - |
dc.date.accessioned | 2011-12-14T07:58:13Z | - |
dc.date.available | 2011-12-14T07:58:13Z | - |
dc.date.issued | 2004 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=240283&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/48680 | - |
dc.description | 학위논문(석사) - 한국과학기술원 : 물리학과, 2004.8, [ v, 35 p. ] | - |
dc.description.abstract | Optical gain from Erbium doped Silicon Rich Silicon Oxide(SRSO) optical waveguide amplifier top-pumped with an 470nm visible LED array is investigated. Er doped SRSO thin films, which consist of Si nanoclusters embedded inside a SiO$_2$ matrix, were prepared by electron cyclotron resonance plasma enhanced chemical vapor deposition with co-sputtering of erbium target using SiH$_4$ and O$_2$ as source gases. After deposition, the samples were rapid thermal annealed at 950 ℃ for 5 min in order to precipitate the excess Si atoms into nc-Si. The Composition of waveguide amplifier is 1 at.% excess Si and ~ 0.06 at.% Er. The presence of nc-Si raises the refractive index of the material to 1.46, automatically providing the refractive index contrast necessary for waveguiding. Thus, ridge-type, single-mode waveguides were formed by defining 1.1 cm long, 9 ㎛ width, 0.3 ㎛ high ridges using photolithography and buffered oxide etching process, followed by mechanical polishing. Optical absorption measurements indicate Er-related absorption of ~ 3dB/cm, consistent with increased Er absorption cross-section by nc-Si. Signal enhancement was observed when the waveguide was pumped from the top using a 470nm visible LED array. simulation of high pump power using 477nm line of an Ar laser showed signal enhancement of 3dB/cm, indicating full inversion. | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | Si sensitized | - |
dc.subject | Er-doped silica waveguidestetetic field dependancepulse | - |
dc.subject | 자기장에 대한 이력특성 연구 | - |
dc.subject | 실리콘 나노결정 광도파로임계전류 | - |
dc.title | Optical gain at 1.54um in nanocrystal Si sensitized, Er-doped silica waveguide using top-pumping 470nm LED | - |
dc.title.alternative | 470nm LED르를 이용한 어븀이 첨가된 실리콘 나노결정 광도파로에서의 1540nm 증폭 | - |
dc.type | Thesis(Master) | - |
dc.identifier.CNRN | 240283/325007 | - |
dc.description.department | 한국과학기술원 : 물리학과, | - |
dc.identifier.uid | 020023493 | - |
dc.contributor.localauthor | Lee, Jin-Ku | - |
dc.contributor.localauthor | 이진구 | - |
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