1. A pressure sensitive adhesion optical film in which a pressure sensitive adhesive layer for an optical film is laminated on at least one surface of the optical film; wherein the pressure sensitive adhesive layer for an optical film comprises a pressure sensitive adhesive layer formed by:
cross-linking a pressure sensitive adhesive for an optical film, wherein the pressure sensitive adhesive for an optical film comprises:
100 parts by weight of a (meth)acrylic-based polymer (A) consisting of an alkyl (meth)acrylate (a1), a (meth)acrylic-based monomer containing a hydroxyl group (a2) in content in the range of from 0.01 to 5 parts by weight relative to 100 parts by weight of the alkyl (meth)acrylate (a1), and one or more copolymerizable compounds without a functional group, each in the content range of from 0 to 100 parts by weight relative to 100 parts by weight of the alkyl (meth)acrylate (a1), wherein said copolymerizable compound without a functional group is selected from the group consisting of benzyl (meth)acrylate, methoxyethyl (meth)acrylate, ethoxymethyl (meth)acrylate, phenoxyethyl (meth)acrylate, (meth)acrylamide, vinyl acetate, and (meth)acrylonitrile;
0.02 to 2 parts by weight of a peroxide (B); and
0.001 to 2 parts by weight of an isocyanate-based compound (C), the contents of the peroxide (B) and the isocyanate-based compound (C) being values relative to 100 parts by weight of the (meth)acrylic-based polymer (A).
2. An image display using at least one sheet of a pressure sensitive adhesion optical film according to claim 1.
3. The pressure sensitive adhesion optical film according to claim 1, wherein a pressure sensitive adhesive layer is laminated on an optical film with an anchor coat layer inserted between.
4. An image display using at least one sheet of a pressure sensitive adhesion optical film according to claim 3.
5. The pressure sensitive adhesion optical film according to claim 3, wherein the anchor coat layer contains a polymer.
6. An image display using at least one sheet of a pressure sensitive adhesion optical film according to claim 5.
7. The pressure sensitive adhesion optical film according to claim 1, wherein adherence between an optical film and a pressure sensitive adhesive layer is 10 N25 mm or more in a 90 degree peel test.
8. An image display using at least one sheet of a pressure sensitive adhesion optical film according to claim 7.
9. A pressure sensitive adhesion optical film in which a pressure sensitive adhesive layer for an optical film is laminated on at least one surface of the optical film, wherein the pressure sensitive adhesive layer for an optical film comprises a pressure sensitive adhesive layer formed by:
cross-linking a pressure sensitive adhesive for an optical film, wherein the pressure sensitive adhesive for an optical film comprises:
100 parts by weight of a (meth)acrylic-based polymer (A) consisting of an alkyl (meth)acrylate (a1), a (meth)acrylic-based monomer containing a hydroxyl group (a2) in content in the range of from 0.01 to 5 parts by weight relative to 100 parts by weight of the alkyl (meth)acrylate (a1), and one or more copolymerizable compounds without a functional group, each in the content range of from 0 to 100 parts by weight relative to 100 parts by weight of the alkyl (meth)acrylate (a1), wherein said copolymerizable compound without a functional group is selected from the group consisting of benzyl (meth)acrylate, methoxyethyl (meth)acrylate, ethoxymethyl (meth)acrylate, phenoxyethyl (meth)acrylate, (meth)acrylamide, vinyl acetate, and (meth)acrylonitrile;
0.02 to 2 parts by weight of a peroxide (B);
0.001 to 2 parts by weight of an isocyanate-based compound (C), the contents of the peroxide (B) and the isocyanate-based compound (C) being values relative to 100 parts by weight of the (meth)acrylic-based polymer (A); and
a silane coupling agent.
10. The pressure sensitive adhesion optical film according to claim 9, wherein a pressure sensitive adhesive layer is laminated on an optical film with an anchor coat layer inserted between.
11. The pressure sensitive adhesion optical film according to claim 10, wherein the anchor coat layer contains a polymer.
12. The pressure sensitive adhesion optical film according to claim 9, wherein adherence between an optical film and a pressure sensitive adhesive layer is 10 N25 mm or more in a 90 degree peel test.
13. The pressure sensitive adhesion optical film according to claim 1, wherein thickness of the pressure sensitive adhesive layer is 10 to 40 \u03bcm.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for amplifying an optical signal, the method comprising the steps of
applying an optical input signal comprising a plurality of wavelength channel signals each at its dedicated wavelength to an optical amplifier unit (OFA),
demultiplexing the input signal for separating each wavelength channel signal from the input signal,
performing a first multiplexing for combining each separated wavelength channel signal with a separate pump signal,
guiding each combination of a wavelength channel signal and pump signal to its dedicated amplifier means (FA1 . . . FA4),
separating the pump signals from the amplified wavelength channel signals obtained from the amplifier means and performing a second multiplexing for combining the amplified wavelength channel signals into an outgoing WDM signal,
characterized by
performing the demultiplexing of the input signal and the first multiplexing by means of a first waveguide phased array component (WGA1; WGA3).
2. A method as claimed in claim 1, characterized in that the separation of the pump signals from the amplified wavelength channel signals and the second multiplexing are carried out using a second waveguide phased array component (WGA2; WGA3).
3. A method as claimed in claim 2, characterized in that the first and second waveguide phased array component are the same component (WGA3).
4. A method as claimed in claim 2, characterized in that the pump signals are applied to the amplifier means from two different directions.
5. A method as claimed in claim 4, characterized in that
the first and second waveguide phased array component are different components (WGA1, WGA2), and that
the pump signal is supplied to both waveguide phased array components.
6. A method as claimed in claim 1 or claim 4, characterized in that the pump signal obtained from one source (PL) is divided into separate pump signals that are supplied to at least one waveguide phased array component.
7. A method as claimed in claim 1 or claim 4, characterized in that the pump signals are supplied from several different sources (PL) to at least one waveguide phased array component.
8. A method as claimed in claim 7, characterized in that the pump signals are supplied through a star coupler (SC).
9. A method for amplifying an optical signal, the method comprising the steps of
applying an optical input signal comprising a plurality of wavelength channel signals each at its dedicated wavelength to an optical amplifier unit (OFA),
demultiplexing the input signal for separating each wavelength channel signal from the input signal,
performing a first multiplexing for combining each separated wavelength channel signal with a separate pump signal,
guiding each combination of a wavelength channel signal and pump signal to its dedicated amplifier means (FA1 . . . FA4),
separating the pump signals from the amplified wavelength channel signals obtained from the amplifier means and performing a second multiplexing for combining the amplified wavelength channel signals into an outgoing WDM signal,
characterized by
performing at least said separation of pump signals and said second multiplexing by means of the same waveguide phased array component (WGA2).
10. An optical amplifier unit for amplifying an optical WDM signal, said signal comprising a plurality of different wavelength channel signals at different wavelengths, said amplifier unit (OFA) comprising
separate amplifier means (FA1 . . . FA4) for each wavelength channel signal,
at least one pump signal source (PL) for generating a pump signal,
an input port for receiving said WDM signal,
first demultiplexer means for demultiplexing the signal supplied to the input port into separate wavelength channel signals,
first multiplexer means for multiplexing the pump signal with each wavelength channel signal,
second demultiplexer means for separating the pump signals from the wavelength channel signals, and
second multiplexer means for multiplexing the amplified wavelength channel signals after an amplification performed,
characterized in that
the first demultiplexer means and the first multiplexer means are implemented with a first waveguide phased array component (WGA1; WGA3).
11. An amplifier unit as claimed in claim 10, characterized in that the second demultiplexer means and the second multiplexer means are implemented with a second waveguide phased array component (WGA2; WGA3).
12. An amplifier unit as claimed in claim 13, characterized in that the first and second waveguide phased array component are the same component (WGA3).
13. An amplifier unit as claimed in claim 10, characterized in that a separate pump signal source (PL) is provided for each separate amplifier means.
14. An amplifier unit as claimed in claim 13, characterized in that the pump signal sources are connected through a common star coupler to the waveguide phased array component.
15. An optical amplifier unit for amplifying an optical WDM signal, said signal comprising a plurality of different wavelength channel signals at different wavelengths, said amplifier unit comprising
separate amplifier means (FA1 . . . FA4) for each wavelength channel signal,
at least one pump signal source (PL) for generating a pump signal,
an input port for receiving said WDM signal,
first demultiplexer means for demultiplexing the signal supplied to the input port into separate wavelength channel signals,
first multiplexing means for multiplexing the pump signal with each wavelength channel signal,
second demultiplexer means for separating the pump signals from the wavelength channel signals, and
second multiplexer means for multiplexing the amplified wavelength channel signals after an amplification performed,
characterized in that
the second demultiplexer means and the second multiplexer means are implemented with the same waveguide phased array component (WGA2).