公开(公告)号：US20040184712A1

公开(公告)日：2004-09-23

申请号：US10763277

申请日：2004-01-26

Applicant: Yokogawa Electric Corporation

Inventor： Shinji Iio ,  Masayuki Suehiro ,  Shin-ichi Nakajima ,  Yoshiyuki Asano ,  Akira Miura ,  Tsuyoshi Yakihara ,  Shinji Kobayashi ,  Sadaharu Oka ,  Morio Wada ,  Shoujirou Araki ,  Machio Dobashi ,  Chie Sato ,  Yasukazu Akasaka

IPC: G02B006/26

CPC classification number: G02F1/3138 ,  G02F2203/023

Abstract: In an optical switch, a carrier-accumulating layer in which injected carriers are accumulated is provided on a semiconductor substrate having a waveguide formed thereon so that injected effective carriers tend to be accumulated in an effective part, and the burden on a driving circuit is thus reduced to realize high-speed operation. At the same time, when a clad on the carrier injection side, of clad layers formed on both sides of the waveguide, is a second clad layer, and a clad on the substrate side is a first clad layer, a third clad layer is formed on the first clad layer to reduce propagation loss in the waveguide.

Abstract translation: 在光开关中，在其上形成有波导的半导体衬底上设置有其中注入有载流子的载流子积聚层，使得注入的有效载流子倾向于积聚在有效部分，并且因此驱动电路的负担 减少实现高速运行。 同时，当在波导两侧形成的包层的载流子注入侧的包层为第二覆盖层时，基板侧的包层为第一覆盖层，形成第三覆盖层 在第一包层上减少波导中的传播损耗。

公开(公告)号：US20040178935A1

公开(公告)日：2004-09-16

申请号：US10761372

申请日：2004-01-22

Applicant: YOKOGAWA ELECTRIC CORPORATION

Inventor： Shinji Iio ,  Masayuki Suehiro ,  Shin-ichi Nakajima ,  Yoshiyuki Asano ,  Hiroyuki Matsuura ,  Akira Miura ,  Tsuyoshi Yakihara ,  Shinji Kobayashi ,  Sadaharu Oka ,  Hirotoshi Kodaka

IPC: H03M009/00

CPC classification number: H04J14/08

Abstract: The present invention aims at achieving an optical signal processing system which converts a higher speed optical signal to electrical signals by time-demultiplexing the signal with low-speed electrical signals. The present invention offers an improved optical signal processing system that converts a serial pulse train optical signal with transmission speed N to parallel pulse train electrical signals. This system is characterized by providing a serial-parallel converter in which at least two optical switches are cascaded, each of which outputs optical signals with transmission speed M (N>M) to one of the two output terminals and outputs the remaining optical signals to the alternative one of said two output terminals by switching connection to said output terminal, receiving parts which convert optical signals from one of the two output terminals of each of the above optical switches to electrical signals, a synchronizing circuit which outputs timing signals in synchronization with electrical signals output from these receiving parts, and drivers which cause the above described optical switches to switch their connections based on timing signals output from the above synchronizing circuit.

Abstract translation: 本发明旨在实现一种光信号处理系统，其通过用低速电信号对信号进行时分解，将高速光信号转换成电信号。 本发明提供一种改进的光信号处理系统，其将具有传输速度N的串行脉冲序列光信号转换为并行脉冲串电信号。 该系统的特征在于提供一种串并联转换器，其中至少两个光开关级联，其中每一个将传输速度M（N> M）的光信号输出到两个输出端之一，并将剩余的光信号输出到 所述两个输出端子中的另一个通过切换到所述输出端子的连接;接收部件，其将来自上述每个光开关的两个输出端之一的光信号转换成电信号;同步电路，其与 从这些接收部输出的电信号，以及使上述光开关根据从上述同步电路输出的定时信号切换连接的驱动器。