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    • 99. 发明授权
    • Interferometric modulator for use in natural light
    • 用于天然光的干涉仪调制器
    • US3758194A
    • 1973-09-11
    • US3758194D
    • 1972-05-05
    • COMMISSARIAT ENERGIE ATOMIQUE
    • DAVAL JFORRAT F
    • G02F1/03G02F1/21G02F1/36
    • G02F1/21G02F1/03G02F2001/213
    • The interferometric modulator comprises a plate having parallel faces and cut at right angles to the optic axis in a uniaxial crystal of the type which produces an electro-optical effect and retains its uniaxial character for an electric field applied along the optic axis, and two flat, semi-transparent electrodes placed at right angles to the faces of the plate. A variable voltage is applied between the electrodes so as to vary the refractive index of the crystal for a beam of natural light which strikes the optical system in a direction close to the optic axis and undergoes a series of internal reflections from the electrodes.
    • 该干涉式调制器包括具有平行面的平板,并且在产生电光效应的单轴晶体中以与光轴成直角的方式切割,并且保持其沿着光轴施加的电场的单轴性质,并且两个平面 ,与该板的表面成直角放置的半透明电极。 在电极之间施加可变电压,以便改变对于靠近光轴的方向撞击光学系统的自然光束的晶体的折射率,并且经历来自电极的一系列内部反射。
    • 100. 发明授权
    • Optical pulse modulator
    • 光学脉冲调制器
    • US3724926A
    • 1973-04-03
    • US3724926D
    • 1971-08-09
    • BELL TELEPHONE LABOR INC
    • LEE T
    • G02F1/015G02F1/025G02F1/03G02F1/05G02F1/35H01S5/026H01S5/50G02F1/36
    • G02F1/025G02F1/015G02F2001/0155G02F2203/26H01S5/0265H01S5/50
    • A high speed optical modulator, in accordance with the present disclosure, comprises a pair of p-n junction diodes, one of which is an amplifier, and the other of which is a saturable absorber. A constant current initially forward-biases the amplifier to approximately unity gain. A pulse-encoded information signal is superimpressed upon this constant bias such that incident optical pulses are transmitted at unity gain for one binary state of the information signal and at a greater gain for the other binary state. The power ratio of the optical pulses for the two binary states is then increased by the saturable absorber which attenuates the smaller optical signal to a much greater extent than it attenuates the larger signal.
    • 根据本公开的高速光学调制器包括一对p-n结二极管,其中一个是放大器,另一个是可饱和吸收体。 恒定电流最初将放大器向前偏置到近似的单位增益。 脉冲编码的信息信号在该恒定偏压上被叠加,使得入射光脉冲以单位增益被传送到信息信号的一个二进制状态,并以另一个二进制状态的较大增益被发送。 然后通过可饱和吸收器增加两个二进制状态的光脉冲的功率比,其使较小的光信号比其衰减较大的信号大得多的程度衰减。