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    • 9. 发明申请
    • Chromatic dispersion compensation device and method
    • 色散补偿装置及方法
    • US20040184724A1
    • 2004-09-23
    • US10793647
    • 2004-03-05
    • Fujitsu Limited
    • Hirotomo IzumiYuichi KawahataYasuhiro Hirose
    • G02B006/26G02B006/42G02B026/08
    • G02B6/29358G02B6/29394G02B6/29395
    • A chromatic dispersion compensator whereby the amount of dispersion and the group delay time can be easily adjusted. A dispersion unit, a transmitting lens and a group delay generation unit are arranged along the optical axis of incident light. The dispersion unit separates the incident light into beams of respective different wavelengths. The transmitting lens is arranged across the optical paths of the beams of different wavelengths separated by the dispersion unit, and refracts the beams at different angles according to their respective incidence positions. The group delay generation unit is arranged across the optical paths of the beams of different wavelengths refracted by the transmitting lens, causes the beams to undergo propagation delay for periods corresponding to their respective incidence positions, and converges and emits the beams of different wavelengths. Consequently, the beams of different wavelengths are imparted group delay corresponding to the refracting angles of the transmitting lens.
    • 一种色散补偿器,可以容易地调节色散量和群延迟时间。 沿着入射光的光轴布置分散单元,发射透镜和组延迟生成单元。 色散单元将入射光分离成不同波长的光束。 透射透镜被布置在由分散单元分离的不同波长的光束的光路上,并且根据其各自的入射位置以不同的角度折射光束。 组延迟生成单元被布置在由发射透镜折射的不同波长的光束的光路上,使得光束经历与其各自入射位置对应的周期的传播延迟,并且会聚和发射不同波长的光束。 因此,不同波长的光束被赋予与发射透镜的折射角对应的群延迟。
    • 10. 发明申请
    • Pulsed CO2 laser including an optical damage resistant electro-optical switching arrangement
    • 脉冲CO2激光器包括光学损伤电光切换装置
    • US20040179775A1
    • 2004-09-16
    • US10389158
    • 2003-03-14
    • Vernon SeguinLeon NewmanR. Russel AustinAnthony DeMaria
    • G02B006/26G02B006/42
    • H01S3/2232H01S3/0346H01S3/09702H01S3/106H01S3/115
    • An electro-optical switch includes an optical assembly arranged to transmit laser-radiation. The optical assembly comprises an active optical crystal. On one of two opposite surfaces of the crystal is an optical window formed from a material having a refractive index lower than the material of the crystal. Heat deposited, as a result of transmission of the laser-radiation, at the surface of the crystal in contact with the widow is transferred to the window, thereby reducing the potential for optical damage to the crystal surface. The window is sufficiently thick that it has an odd integer multiple of quarter-wavelengths optical thickness at a wavelength about equal to a wavelength of the laser-radiation, thereby behaving as an antireflection device for the crystal at that wavelength. In one embodiment of the optical assembly, the active optical crystal is a cadmium telluride crystal and the window is formed from cesium bromide.
    • 电光开关包括布置成透射激光辐射的光学组件。 光学组件包括有源光学晶体。 在晶体的两个相对表面中的一个表面上是由折射率低于晶体材料的材料形成的光学窗口。 作为透射激光辐射的结果,在与寡妇接触的晶体的表面上进行热沉积被转移到窗口,由此降低了对晶体表面的光学损伤的可能性。 窗口足够厚,使得其具有在等于激光辐射波长的波长处的四分之一波长光学厚度的奇整数倍,从而表现为在该波长处的晶体的抗反射装置。 在光学组件的一个实施例中,有源光学晶体是碲化镉晶体,窗口由溴化铯形成。