Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
10 words
An optical waveguide comprising at least one substantially polymerized diacetylene.
Claim 2
Dependent Claim
10 words
An optical waveguide comprising at least one substantially polymerized diacetylene.
Claim 3
Dependent Claim
12 words
A waveguide as claimed in claim 1 wherein said diacetylene is non-centrosymmetric.
Claim 4
Dependent Claim
20 words
A waveguide as claimed in claim 2 wherein said diacetylene is crystallisable into a crystal having a non-centrosymmetric unit cell.
Claim 5
Dependent Claim
21 words
A waveguide as claimed in any one of claims 1 to 3 wherein said diacetylene has at least one chiral centre.
Claim 6
Dependent Claim
59 words
A waveguide according to any of claims 1 to 4 formed of at least one diacetylenic layer comprising at least one substantially polymerized diacetylene, at least one boundary layer on either side of said diacetylenic layer, said boundary layers having an index of refraction lower than said diacetylenic layer, and input means for coupling light into said diacetylenic layer.
Claim 7
Dependent Claim
29 words
A waveguide as claimed in claim 5 further comprising output means for coupling light cut of said diacetylenic layer and sensing means for detecting light transmitted by said layer.
Claim 8
Dependent Claim
15 words
A waveguide as claimed in claims 5 or 6 wherein said layers are bonded covalently.
Claim 9
Dependent Claim
13 words
A waveguide as claimed in claim 7 wherein said bonding comprises silicon-oxygen bonds.
Claim 10
Dependent Claim
26 words
A waveguide according to any one of claims 5 to 8 characterized by the inclusion of means for establishing an electric filed across said diacetylenic layer.
Claim 11
Dependent Claim
15 words
A waveguide according to any preceding claim wherein said waveguide is a planar optical waveguide.
Claim 12
Dependent Claim
29 words
A waveguide as claimed in claim 10 wherein the frequency of the light exiting the waveguide is a second harmonic of the frequency of the light entering the guide.
Claim 13
Dependent Claim
14 words
A waveguide as claimed in claim 11 wherein said exiting light is phase matched..
Claim 14
Dependent Claim
30 words
A waveguide as claimed in claim 10 wherein the light exiting the waveguide is modulated, polarized, frequency selected, amplified or frequency modified with respect to the light entering the waveguide.
Claim 15
Dependent Claim
25 words
A waveguide as claimed in any one of claims 10 to 13 wherein said planar optical waveguide is elaborated upon a substrate having semiconducting properties.
Claim 16
Dependent Claim
15 words
A waveguide as claimed in claim 10 also adapted to function as a logic device.
Claim 17
Dependent Claim
55 words
A process for the production of a waveguide according to any preceding claim comprising coating a substrate with at least one layer of a diacetylene which is crystallizable into a crystal having a non-centrosymmetric unit cell, irradiating selected portions of said layer to cause substantial polymerization of said portions and removing those portions not irradiated.
Claim 18
Dependent Claim
24 words
A process as claimed in claim 16 further comprising providing neans for generating an electric field across at least one of said selected portions.
Claim 19
Dependent Claim
18 words
A process as claimed in claim 17, further comprising providing input means for coupling light into said layer.
Claim 20
Dependent Claim
16 words
A process as claimed in claims 16 to 18 whereby an optical logic device is provided.