Title:
【発明の名称】光スイッチ
Document Type and Number:
Japanese Patent JPH05503790
Kind Code:
A
Abstract:
The specification identifies dithiolenes which give good performance as the critical region of an optical switch. The dithiolenes have the formula shown in Figure 1 wherein: (A) the R groups, any two of which may be the same or different, are selected so as to tune the absorption bands of the molecule for use at the operational wavelength and/or to act as bridges to join molecules together; (B) the X groups, any two of which may be the same or different, are selected from S and Se; (C) M is selected from Ni, Pt, Pd and Cu; (D) C = -1 or 0; and (E) (i) when C = -1, Y is a cation to render the molecule electrically neutral; preferably Y is selected from ammonium, substituted ammonium, Na<+>, Li<+> and K<+>, (ii) when C = 0, Y is absent (since the molecule is neutral there is no change to balance). The dithiolene may be diluted with an organic polymer selected from polyacrylates, polymethacrylates, such as polymethymethacrylate , polycarbonates, polyisobutylene, polyethylene terephthalate, polystyrene and polysiloxane.
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Inventors:
Winter, Christopher Simon
Oliver, Stefan Niger
Rush, James Douglas
Underhill, Alan Edward
Hill, Colum Aidan Stefan
Oliver, Stefan Niger
Rush, James Douglas
Underhill, Alan Edward
Hill, Colum Aidan Stefan
Application Number:
JP50400891A
Publication Date:
June 17, 1993
Filing Date:
February 06, 1991
Export Citation:
Assignee:
British Telecommunications Public Limited Company
International Classes:
C08G79/00; C08K5/45; C08L23/00; C08L23/02; C08L25/00; C08L33/04; C08L69/00; C08L83/04; C08F30/04; G02F1/35; G02F1/355; G02F1/361; G02F1/313; (IPC1-7): C08F30/04; C08K5/45; C08L23/02; C08L25/00; C08L33/04; C08L69/00; C08L83/04; G02F1/35
Attorney, Agent or Firm:
Takehiko Suzue (3 outside)