Abstract: The present invention discloses an assembly and method for power generation. The assembly comprises a first rotatable member (100), a second rotatable member (200) driven to move by the first rotatable member (100) at which the second rotatable member (200) is in contact with, a third rotatable member (300) driven to move about a rotating axis by the second rotatable member (200) thereof, a rotatable disk (400) mounted to the third rotatable member (300) driven to move correspondingly about the said rotating axis by the third rotatable member (300) thereof, and an electromechanical energy converter (500) having a rotatable unit (501) coupled to the rotatable disk (400) configured for generating electrical energy.

Abstract: An optical fibre device based on the Raman effect comprises a first optical source to provide light at a first wavelength, and a holey optical fibre which receives the light from the first optical source such that optical gain or loss is provided at a second wavelength by the effect of Raman scattering within the fibre. For optical gain, the second wavelength is longer than the first wavelength, and the device can be operated as an amplifier, or as a laser if optical feedback is provided. For optical loss, the second wavelength is shorter than the first, and the device may be used as an optical modulator. The fibre may be fabricated from pure silica, although other undoped or doped materials may alternatively be used to tailor properties of the fibre such as gain spectrum, bandwidth, power handling capability and mode propagation.

Abstract: An optical fibre device based on the Raman effect comprises a first optical source to provide light at a first wavelength, and a holey optical fibre which receives the light from the first optical source such that optical gain or loss is provided at a second wavelength by the effect of Raman scattering within the fibre. For optical gain, the second wavelength is longer than the first wavelength, and the device can be operated as an amplifier, or as a laser if optical feedback is provided. For optical loss, the second wavelength is shorter than the first, and the device may be used as an optical modulator. The fibre may be fabricated from pure silica, although other undoped or doped materials may alternatively be used to tailor properties of the fibre such as gain spectrum, bandwidth, power handling capability and mode propagation.