公开(公告)号：EP1635211B1

公开(公告)日：2011-08-17

申请号：EP04746231.2

申请日：2004-06-16

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： FUJIWARA, Masamichi, c/o NTT IP Center ,  KANI, Junichi, NTT Intellectual Property Center ,  AKIMOTO, Koji, NTT Intellectual Property Center ,  IWATSUKI, Katsumi, c/o NTT IP Center

IPC分类号： G02F1/01

CPC分类号： H04B10/2587 ,  H04B10/2971 ,  H04B2210/258 ,  H04J14/02

摘要： A reflection optical modulator including a bidirectional optical amplifier, or a multi-wavelength simultaneous optical modulating device composed by combining reflection optical modulators. BY numerically limiting the relation between the gain of the bidirectional optical amplifier and the loss of the optical modulators or by inserting polarization rotating means, the influence of the light reflected at the ends of the bidirectional optical amplifier is lessened, and a stable amplifying function is realized. A transmission optical modulator including semiconductor optical amplifiers (SOAs) connected in multiple stages is also disclosed. Optical isolators are inserted every other SOAs. Thus, the influence of the reflected light is lessened, and a stable amplifying function and reduction of the cost are both realized.

公开(公告)号：EP1635211A1

公开(公告)日：2006-03-15

申请号：EP04746231.2

申请日：2004-06-16

申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION

发明人： FUJIWARA, Masamichi, c/o NTT IP Center ,  KANI, Junichi, NTT Intellectual Property Center ,  AKIMOTO, Koji, NTT Intellectual Property Center ,  IWATSUKI, Katsumi, c/o NTT IP Center

IPC分类号： G02F1/01

CPC分类号： H04B10/2587 ,  H04B10/2971 ,  H04B2210/258 ,  H04J14/02

摘要： An optical modulation apparatus is provided which implements a stable amplifying function by reducing the effect of reflected light rays from end faces of a bidirectional optical amplifier by imposing a numerical limitation on the relationship between the gain of the bidirectional optical amplifier and the loss of the optical modulator, or by inserting a polarization rotation section in a reflection type optical modulator including the bidirectional optical amplifier or in a multi-wavelength collective optical modulation system combining the multiple optical modulators. An optical modulation apparatus is provided which implements a stable amplifying function and cost reduction by reducing the effect of reflected light rays by interposing optical isolators at every alternate SOAs in a transmission-type optical modulation apparatus including a plurality of semiconductor optical amplifiers (SOAs) connected in a multistage fashion.

摘要翻译： 提供了一种光调制装置，通过对双向光放大器的增益与光学损失之间的关系施加数值限制，通过减小来自双向光放大器的端面的反射光的影响来实现稳定的放大功能 或者通过在包括双向光放大器的反射型光调制器中插入偏振旋转部分，或者在组合多个光调制器的多波长集合光调制系统中。 提供一种光调制装置，其通过在包括多个连接的多个半导体光放大器（SOA）的透射型光调制装置中，通过在每个替代的SOA处插入光隔离器来减少反射光线的影响来实现稳定的放大功能和成本降低 以多级方式。