Title:
光伝送の性能改善のための同期偏光および位相変調
Document Type and Number:
Japanese Patent JP4247927
Kind Code:
B2
Abstract:
A method and apparatus is provided for modulating the polarization of an optical signal. A polarization modulator receives an optical signal onto which data has been modulated at a predetermined frequency. The polarization modulator modulates the state of polarization of the optical signal at a frequency phase locked and equal to the same predetermined frequency at which the data is modulated onto the optical signal. The polarization modulation is performed so that the average value of the state of polarization over each modulation cycle is substantially equal to zero.
Inventors:
Neil S. Bergano
Application Number:
JP24819295A
Publication Date:
April 02, 2009
Filing Date:
September 27, 1995
Export Citation:
Assignee:
AT&T CORP.
International Classes:
G02F1/01; G02F2/00; H04B10/02; H04B10/00; H04B10/135; H04B10/18
Domestic Patent References:
| JP63174435A | ||||
| JP4293024A |
Attorney, Agent or Firm:
Masao Okabe
Nobuaki Kato
Shinichi Usui
Takao Ochi
Teruhisa Motomiya
Asahi Shinmitsu
Nobuaki Kato
Shinichi Usui
Takao Ochi
Teruhisa Motomiya
Asahi Shinmitsu