公开(公告)号：WO2012140186A1

公开(公告)日：2012-10-18

申请号：PCT/EP2012/056753

申请日：2012-04-13

Applicant: ALCATEL LUCENT ITALIA S.P.A. ,  MARTINELLI, Mario ,  GAVIOLI, Giancarlo ,  GALLI, Paola ,  DI MOLA, Domenico ,  PAROLARI, Paola ,  MARAZZI, Lucia ,  RAZZETTI, Luca ,  SUBERINI, Luca ,  CAMPI, Domenico

Inventor： MARTINELLI, Mario ,  GAVIOLI, Giancarlo ,  GALLI, Paola ,  DI MOLA, Domenico ,  PAROLARI, Paola ,  MARAZZI, Lucia ,  RAZZETTI, Luca ,  SUBERINI, Luca ,  CAMPI, Domenico

IPC: H04B10/145 ,  H01S5/14 ,  H01S3/106

CPC classification number: H04B10/27 ,  H01S3/08054 ,  H01S5/02284 ,  H01S5/02469 ,  H01S5/141 ,  H01S5/146 ,  H01S5/4062 ,  H01S5/4087 ,  H04B10/532

Abstract: The present document relates to the field of optical access networks. In particular, the present document relates to an optical transmitter, in particular (but not exclusively) for a WDM (Wavelength Division Multiplexing) passive optical network, and to a WDM PON comprising such an optical transmitter. An optical transmitter arrangement (7) is described. The arrangement (7) comprises a first mirror (41) and a second mirror (64) at a first end and a second end of a cavity, respectively; an optical amplifier (63) configured to amplify light polarized in a first polarization plane; wherein the optical amplifier (63) is positioned within the cavity upstream the first mirror (64); an optical waveguide (5-2) configured to transmit light from the optical amplifier (63) to the second mirror (41) and vice versa; a first non-reciprocal polarization rotator (82) positioned within the cavity upstream of the optical amplifier (63) and downstream of the optical waveguide (5-2); and a second non-reciprocal polarization rotator (81) positioned within the cavity upstream of the optical waveguide (5-2) and downstream of the first mirror (41); wherein the first (82) and second (81) non-reciprocal polarization rotators are configured to rotate the polarization of the light such that light which re-enters the optical amplifier (63) after having been reflected by the second mirror (41) is polarized in the first polarization plane.

Abstract translation: 本文件涉及光接入网络领域。 特别地，本文件涉及用于WDM（波分复用）​​无源光网络的光发射机，特别是（但不排他地））以及包括这种光发射机的WDM PON。 描述了一种光发射器装置（7）。 装置（7）分别包括位于空腔的第一端和第二端的第一反射镜（41）和第二反射镜（64） 光放大器（63），被配置为放大在第一偏振面中偏振的光; 其中所述光放大器（63）位于所述第一反射镜（64）上游的空腔内; 配置为将光从所述光放大器（63）传输到所述第二反射镜（41）的光波导（5-2），反之亦然; 位于光放大器（63）上游并位于光波导（5-2）下游的空腔内的第一非倒数偏振旋转器（82）; 以及位于所述光波导（5-2）上游并位于所述第一反射镜（41）下游的空腔内的第二非互易偏振旋转器（81）。 其中所述第一（82）和第二（81）不可逆偏振旋转器被配置为旋转所述光的偏振，使得在被所述第二反射镜（41）反射之后重新进入所述光放大器（63）的光是 在第一极化平面中极化。