公开(公告)号：US3811096A

公开(公告)日：1974-05-14

申请号：US29078672

申请日：1972-09-21

Applicant: BELL TELEPHONE LABOR INC

Inventor： WEMPLE S ,  DILLON J ,  VAN UITERT L

IPC: G02F1/09 ,  C01F17/00 ,  C09K3/00 ,  G02F1/00 ,  H01S3/106 ,  H01S3/10

CPC classification number: G02F1/0036 ,  H01S3/1066

Abstract: Magneto-optic modulators of the garnet structure useful over a transparency bandwidth of from about 1 to 5 micrometers show improved figure of merit where the dodecahedral site is at least partially occupied by praseodymium or neodymium, remainder gadolinium or europium.

Abstract translation: 在约1至5微米的透明带宽上有用的石榴石结构的磁光调制器显示改善的品质因数，其中十二面体部位至少部分被镨或钕部分占据，剩余的钆或铕。

公开(公告)号：US3764195A

公开(公告)日：1973-10-09

申请号：US3764195D

申请日：1972-02-02

Applicant: BELL TELEPHONE LABOR INC

Inventor： LEVINSTEIN H ,  KING TIEN P ,  BLANK S ,  LE CRAW R ,  WOLFE R ,  VARNERIN L ,  WEMPLE S

IPC: G02B6/12 ,  G02B6/34 ,  G02F1/09 ,  G02F1/095 ,  H01F10/24 ,  H01S3/063 ,  G02B5/14

CPC classification number: G02B6/12004 ,  G02B6/34 ,  G02F1/095 ,  H01F10/245 ,  H01S3/0632

Abstract: Thin-film optical waveguides are disclosed comprising singlecrystal rare-earth garnet films deposited on garnet substrates. Epitaxial film growth techniques, developed largely for magnetic bubble domain devices, provide films with superior optical properties either at visible or near-visible wavelengths. The thin-film optical waveguides are comprised of transparent garnet films of the general formula R3B5O12; where R can be yttrium, lanthanum, bismuth, or a rare-earth ion with an atomic number of 60 to 71 inclusive, and B an be either magnetic, i.e., iron, or nommagnetic, i.e., gallium or aluminum. The use of the former types of films can give rise to various thin-film magnetic devices suitable for integrated optical circuit arrangements. One such device which is disclosed, a thin-film magneto-optical switch and modulator, includes a light-guiding film of an iron garnet composition and a serpentine micro-circuit which is deposited on the film to carry a switching current. The device provides a continuous switching of the polarization modes of the light waves guided in the film. Similarly, by applying a microwave current to the same circuit, the guided light can be modulated.

Abstract translation: 披露了沉积在石榴石基底上的单晶稀土石榴石薄膜的薄膜光波导。 外延膜生长技术主要用于磁性气泡域装置，在可见光或近可见光波长下提供具有优异光学性质的膜。 薄膜光波导由通式R3B5O12的透明石榴石膜构成; 其中R可以是钇，镧，铋或含有原子数为60〜71的稀土离子，B a为磁性，即铁，或非磁性，即镓或铝。 使用前一种类型的膜可以产生适合于集成光电路布置的各种薄膜磁性装置。 公开的一种这样的装置，薄膜​​磁光开关和调制器，包括铁石榴石组合物的导光膜和沉积在膜上以承载开关电流的蛇形微电路。 该装置提供在膜中引导的光波的偏振模式的连续切换。 类似地，通过对同一电路施加微波电流，可以调制导向光。