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    • 1. 发明申请
    • GIRES-TOURNOIS ETALONS AND DISPERSION COMPENSATION
    • 女童巡回赛和散打补偿
    • WO2003096082A2
    • 2003-11-20
    • PCT/GB2003/002046
    • 2003-05-13
    • ASTON PHOTONIC TECHNOLOGIES LTDSHU, XuewenBYRON, Kevin, ChristopherKENNEDY, Lee, AnnSUGDEN, Catherine, Anne
    • SHU, XuewenBYRON, Kevin, ChristopherKENNEDY, Lee, AnnSUGDEN, Catherine, Anne
    • G02B6/00
    • G02B6/29358G02B6/02085G02B6/12007H04B10/2519
    • A first embodiment of the invention provides a Gires-Tournois etalon (DGTE) (20) comprising a cladding mode suppressed optical fibre (22), including an etalon section (24) in which a weakly reflective optical waveguide grating (26) and a strongly reflective optical waveguide grating (28) are provided. The two gratings (26, 28) are chirped fibre Bragg gratings (FBGs). The chirped FBGs (26, 28) are arranged to together define an etalon cavity. Another aspect of the invention provides a dispersion compensator (60) comprising two DGTEs (62, 64) according to the first embodiment of the invention. The DGTEs (62, 64) have a linearly varying dispersion over a selected optical bandwidth. The first DGTE (62) has a positive dispersion slope and the second DGTE (64) has a negative dispersion slope. The magnitudes of the dispersion slopes of the two DGTEs (62, 64) are substantially equal, so that the dispersion compensator (60) has a constant dispersion across the selected bandwidth. The DGTEs (62, 64) are optically coupled to one another via a four-port optical circulator (66).
    • 本发明的第一实施例提供了一种包括包层模式抑制光纤(22)的Gires-Tournois标准具(20),其包括标准具部分(24),其中弱反射光波导光栅(26)和强反射光波导光栅 反射光波导光栅(28)。 两个光栅(26,28)是啁啾光纤布拉格光栅(FBG)。 啁啾的FBG(26,28)被布置成一起限定标准具腔。 本发明的另一方面提供一种包括根据本发明的第一实施例的两个DGTE(62,64)的色散补偿器(60)。 DGTE(62,64)在选定的光学带宽上具有线性变化的色散。 第一DGTE(62)具有正色散斜率,第二DGTE(64)具有负色散斜率。 两个DGTE(62,64)的色散斜率的大小基本相等,使得色散补偿器(60)在所选择的带宽上具有恒定色散。 DGTE(62,64)通过四端口光循环器(66)彼此光耦合。