POLARIZATION STABILIZATION SCHEME FOR UN-COOLED SELF-TUNING CAVITY FOR COLORLESS ULTRA BROADBAND PON
    11.
    发明申请
    POLARIZATION STABILIZATION SCHEME FOR UN-COOLED SELF-TUNING CAVITY FOR COLORLESS ULTRA BROADBAND PON 审中-公开
    用于无色无线超宽带PON的无冷却自调谐的偏振稳定方案

    公开(公告)号:US20140029945A1

    公开(公告)日:2014-01-30

    申请号:US14007354

    申请日:2012-04-13

    IPC分类号: H04B10/27 H04B10/532

    摘要: An optical transmitter for a WDM (Wavelength Division Multiplexing) passive optical network (PON) and a WDM PON comprising such an optical transmitter are disclosed. An optical transmitter comprises first mirror and second mirrors at first end and second ends of a cavity; an optical amplifier positioned within the cavity upstream from the first mirror and for amplifying light polarized in a first polarization plane; an optical waveguide for transmitting light from the optical amplifier to the second mirror and vice versa; a first non-reciprocal polarization rotator upstream of the optical amplifier and downstream of the optical waveguide; and a second non-reciprocal polarization rotator upstream of the optical waveguide and downstream of the first mirror; wherein the first and second non-reciprocal polarization rotators rotate the polarization of the light such that light which re-enters the optical amplifier after having been reflected by the second mirror is polarized in the first polarization plane.

    摘要翻译: 公开了一种用于WDM(波分复用)​​无源光网络(PON)和包括这种光发射机的WDM PON的光发射机。 光学发射器包括在腔的第一端和第二端处的第一反射镜和第二反射镜; 光放大器,位于第一反射镜上游的空腔内,用于放大在第一偏振面中偏振的光; 用于将光从光放大器传输到第二反射镜的光波导,反之亦然; 在光放大器的上游和光波导的下游的第一非倒数偏振旋转器; 以及在所述光波导上游和所述第一反射镜的下游的第二非倒数偏振旋转器; 其中所述第一和第二非可逆偏振旋转器使所述光的偏振旋转,使得在被所述第二反射镜反射之后重新进入所述光放大器的光在所述第一偏振面中被偏振。

    Intensity modulation of optical signals
    12.
    发明授权
    Intensity modulation of optical signals 失效
    光信号强度调制

    公开(公告)号:US07031047B2

    公开(公告)日:2006-04-18

    申请号:US10914260

    申请日:2004-08-09

    IPC分类号: G02F1/35

    CPC分类号: G02F2/004 G02F1/3519

    摘要: A wavelength converter or demultiplexer device comprising first and second stages (30, 40). For wavelength converter action, the first stage impresses an intensity modulation (IM) and phase modulation (PM) on a CW input signal (λ1) carried by an input DATA signal (λ2) using cross phase modulation in a non-linear optical element (46). The first stage in an embodiment is a semiconductor laser amplifier loop optical mirror (SLALOM) which has a semiconductor optical amplifier (SOA) as the non-linear optical element. The second stage has a non-linear transfer function and impresses a further IM on the optical signal responsive to the PM impressed in the first stage. In an embodiment, the second stage is a polarization maintaining fiber (PMF) optical loop. The transfer function of the overall device is thus improved by making it steeper and more time confined. This is achieved by combining a fast first stage with a second stage that has a non-linear transfer function, so that the residual PM from the first stage synchronously drives a nonlinear process in the second stage.

    摘要翻译: 一种包括第一和第二级(30,40)的波长转换器或多路分解器装置。 对于波长转换器动作,第一级在由输入DATA信号(λ2> 2)承载的CW输入信号(λ<1> 1)上施加强度调制(IM)和相位调制(PM) / SUB>)在非线性光学元件(46)中使用交叉相位调制。 实施例中的第一阶段是具有作为非线性光学元件的半导体光放大器(SOA)的半导体激光放大器环路光学镜(SLALOM)。 第二级具有非线性传递函数,并且响应于在第一级中印制的PM而对光信号施加进一步的IM。 在一个实施例中,第二级是偏振维持光纤(PMF)光环路。 因此,整体装置的传递功能通过使其更陡和更多时间受限而得到改善。 这通过将快速第一阶段与具有非线性传递函数的第二阶段组合来实现,使得来自第一阶段的残余PM同步地驱动第二阶段中的非线性过程。

    Intensity modulation of optical signals
    13.
    发明申请
    Intensity modulation of optical signals 失效
    光信号强度调制

    公开(公告)号:US20050012983A1

    公开(公告)日:2005-01-20

    申请号:US10914260

    申请日:2004-08-09

    IPC分类号: G02F1/35 G02F2/00

    CPC分类号: G02F2/004 G02F1/3519

    摘要: A wavelength converter or demultiplexer device comprising first and second stages (30, 40). For wavelength converter action, the first stage impresses an intensity modulation (IM) and phase modulation (PM) on a CW input signal (λ1) carried by an input DATA signal (λ2) using cross phase modulation in a non-linear optical element (46). The first stage in an embodiment is a semiconductor laser amplifier loop optical mirror (SLALOM) which has a semiconductor optical amplifier (SOA) as the non-linear optical element. The second stage has a non-linear transfer function and impresses a further IM on the optical signal responsive to the PM impressed in the first stage. In an embodiment, the second stage is a polarization maintaining fiber (PMF) optical loop. The transfer function of the overall device is thus improved by making it steeper and more time confined. This is achieved by combining a fast first stage with a second stage that has a non-linear transfer function, so that the residual PM from the first stage synchronously drives a nonlinear process in the second stage.

    摘要翻译: 一种包括第一和第二级(30,40)的波长转换器或多路分解器装置。 对于波长转换器动作,第一阶段使用非线性光学元件中的交叉相位调制在由输入DATA信号(λ2)承载的CW输入信号(λ1)上施加强度调制(IM)和相位调制(PM) 46)。 实施例中的第一阶段是具有作为非线性光学元件的半导体光放大器(SOA)的半导体激光放大器环路光学镜(SLALOM)。 第二级具有非线性传递函数,并且响应于在第一级中印制的PM而对光信号施加进一步的IM。 在一个实施例中,第二级是偏振维持光纤(PMF)光环路。 因此,整体装置的传递功能通过使其更陡和更多时间受限而得到改善。 这通过将快速第一阶段与具有非线性传递函数的第二阶段组合来实现,使得来自第一阶段的残余PM同步地驱动第二阶段中的非线性过程。