Title:
FULLY OPTICAL SWITCH AND WAVELENGTH CONVERTER
Document Type and Number:
Japanese Patent JP3391267
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a fully optical switch from deteriorating in extinction ratio.
SOLUTION: The fully optical switch transmits or cuts off 2nd light having 2nd wavelength in synchronism with 1st input light having 1st wavelength and outputs it as output light. An optical interferometer is equipped with nonlinear semiconductor waveguides 10 and 11 and the 1st input light and 2nd input light are inputted. A monitor laser beam source 31 gives monitor beam having 3rd wavelength to the interferometer. An optical spectrum component analyzer takes a spectrum component analysis of output monitor light to obtain wavelength component intensity. Then a feedback control system 39 controls the phase bias of the interferometer according to the wavelength component intensity. Namely, the feedback control system controls a phase adjuster 26.
Inventors:
Yoshiyasu Ueno
Application Number:
JP19874498A
Publication Date:
March 31, 2003
Filing Date:
July 14, 1998
Export Citation:
Assignee:
NEC
International Classes:
G02F1/35; G02F2/00; G02F1/21; H01S5/50; (IPC1-7): G02F1/35
Domestic Patent References:
| JP8334796A |
Other References:
中村滋、他，対称マッハ・ツェンダー型全光スイッチの超高速・低エネルギー動作，電子情報通信学会技術研究報告（ＯＰＥ９５ ７３−８６），Ｖｏｌ．９５、Ｎｏ．２７５，ｐｐ．１３−１８
Attorney, Agent or Firm:
Masahiko Desk (2 outside)