-
公开(公告)号:US20020191268A1
公开(公告)日:2002-12-19
申请号:US09860923
申请日:2001-05-17
发明人: James W. Seeser , Basil L. Swaby
IPC分类号: G02F001/03 , G02B006/35
CPC分类号: G02B6/29358 , G02B6/29395 , G02B6/29398 , G02B26/001 , G02F1/0311 , G02F1/153 , G02F1/21 , G02F1/216 , G02F2001/213 , G02F2201/16 , G02F2201/346
摘要: A multi-cavity optical device allowing selective control of a bandpass characteristic thereof . Fabry-Perot structures are coherently coupled together to form a narrow bandpass structure. At least one of the spacer regions in the device includes an active material that changes the optical thickness of the spacer to de-tune the device. In one embodiment, the active material is transparent and lies along the optical path through the device. In another embodiment, an active material that lies outside of the optical path tunes an air gap. Altering the first or last spacer in a multi-cavity structure provides variation in the transmission loss while generally retaining a flattop filter response with low passband ripple. Altering interior spacer regions provides high sensitivity to variations in the optical thickness of the spacer.
摘要翻译: 一种允许选择性地控制其带通特性的多腔光学装置。 法布里 - 珀罗结构相干地耦合在一起以形成窄带通结构。 装置中的至少一个间隔区域包括改变间隔物的光学厚度以调整装置的活性材料。 在一个实施例中,活性材料是透明的并且沿着穿过该装置的光路位于其中。 在另一个实施例中,位于光路外侧的活性材料调节气隙。 在多空腔结构中改变第一个或最后一个间隔件提供了传输损耗的变化,同时通常保持具有低通带纹波的平板滤波器响应。 改变内部间隔区域对间隔物的光学厚度的变化提供高灵敏度。