Title:
【発明の名称】光変調器の駆動装置及び変調器集積化光源の駆動装置並びにそれを備えた光通信モジュール及び光通信システム
Document Type and Number:
Japanese Patent JP2907185
Kind Code:
B2
Abstract:
A driving apparatus for causing an optical modulator to output modulated light, which has a PIN structure composed of a buffer layer, a light absorption layer and a clad layer and wherein an absorbed amount of light waves inputted to the light absorption layer varies in response to an applied voltage applied in the reverse direction to the PIN structure, includes a voltage waveform converter for deforming an input signal waveform so as to correct the non-linear characteristics of the absorbed amount with respect to the applied voltage of the optical modulator or a level shifting circuit for shifting a voltage level of the input signal to a forward voltage side to the PIN structure within a built-in voltage to correct the displacement of a cross point of an eye pattern of modulated output light outputted from the optical modulator of the electrical field absorption type.
Inventors:
ISHIZAKA MASASHIGE
Application Number:
JP10189897A
Publication Date:
June 21, 1999
Filing Date:
April 18, 1997
Export Citation:
Assignee:
NIPPON DENKI KK
International Classes:
G02F1/01; H01S5/00; H01S5/026; H01S5/042; G02F1/015; H04B10/07; H04B10/2507; H04B10/40; H04B10/50; H04B10/54; H04B10/564; H04B10/588; H04B10/60; H04B10/80; (IPC1-7): G02F1/015; H04B10/02; H04B10/28
Domestic Patent References:
| JP252312A |
Attorney, Agent or Firm:
Wakabayashi Tadashi