[특허]Method of forming planar optical waveguides

Method of forming planar optical waveguides 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C03C-017/02 C03C-017/04 G02B-005/14
출원번호	US-0380482 (1973-07-18)
발명자 / 주소	Keck Donald B. (Big Flats NY) Schultz Peter C. (Painted Post NY)
출원인 / 주소	Corning Glass Works (Corning NY 02)
인용정보	피인용 횟수 : 35 인용 특허 : 0

초록 ▼

A method of producing a planar optical waveguide by applying to at least a portion of one flat surface of a substantially flat glass substrate having a predetermined desired index of refraction a first coating of glass having an index of refraction greater than that of said glass substrate. Thereafter a second coating of glass having an index of refraction less than that of the first coating of glass is applied over the exposed surface of the first coating of glass. The thickness of the first coating of glass being determined as a function of the highest mode order and the wavelength of light to be propagated within a waveguide having infinite width, and the indices of refraction of the substrate and each of the applied coatings.

대표청구항 ▼

A method of forming a planar optical waveguide for light propagation comprising the steps of: providing a substantially flat glass substrate having a predetermined desired index of refraction, applying a first coating of glass having an index of refraction greater than that of said glass substrate to at least a portion of one flat surface of said substrate to thereby forM a film thereon, said first coating of glass having an outer exposed surface substantially parallel to said one flat surface of said substrate, the thickness of said first coating being defined by said surfaces, the width of said first coating being the dimension perpendicular to both said thickness and the light propagation axis of said first coating, and applying a second coating of glass having an index of refraction less than that of said first coating of glass over at least said outer exposed surface of said first coating of glass to thereby form a film thereon, the thickness of said first coating of glass for any desired finite width thereof being equal to or less than the thickness a of a coating having an infinite width, thickness a being determined in accordance with one of the following equations for TMOm modes where m is an even integer 2a 1 n1 2- n32 1/2 n2 2 (n2 2- n12)1/2 =m+1 + tan1 , lpn2 2- n12 n3 for TMOm modes where m is an odd integer 2a 1 n1 2- n32 1/2 n2 2 (n22 -n12)1/2 =m+1 - cot1 , lpn2 2- n12 n3 for TEOm modes where m is an even integer 2a 1 n12 -n32 1/2 (n22 -n12)1/2 =m+1 + tan1 , lpn22 -n12 for TEOm modes where m is an odd integer 2a 1 n12 -n32 1/2 (n22 -n12)1/2 =m+1 - cot1 , lpn22 -n12 where m ≤10 and is the highest mode order to be propagated within a waveguide the first coating of which has a thickness a and an infinite width, la and an infinite width, n2 is the index of refraction of said first coating, and one of n1 and n3 being the index of refraction of said substrate while the other of n1 and n3 being the index of refraction of said second coating of glass, said thickness of said first coating of glass being so determinable where the propagation constant of said waveguide is equal to or less than K1, where K1 is greater than K3, where K1 = 2pn1 /lK3 =2pn3/la of a coating having infinite width, thickness a being determined in accordance with the following equation 2a/l(n22 - n12)1/2 = m+1, where m ≤10 and is the highest mode order to be propagated within a wave-guide the first coating of which has a thickness a and an infinite width, la and an infinite width, n2 is the index of refraction of said first coating, and n1 is the index of refraction of said substrate and said second coating of glass, said thickness of said first coating of glass being so determinable where the propagation constant of said waveguide is equal to or less than K1, where K1 = 2pn1/l

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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Method of forming planar optical waveguides 원문보기

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Method of forming planar optical waveguides 원문보기

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이 특허를 인용한 특허 (35)

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