Abstract: Various embodiments provide a method of fabricating a fibre, the method comprising translating a fibre having a light transmissive core surrounding by a cladding material; and while translating, non-interferometrically applying energy to alter structure of the light transmissive core and/or the cladding material.

Abstract: According to embodiments of the present invention, an optical device is provided. The optical device includes an optical fiber comprising a core for propagation of light and a cladding surrounding the core, and at least one microchannel defined in the optical fiber extending at least partially through the cladding, wherein the at least one microchannel has a concave-shaped surface arranged to interact with an optical field of the light. According to further embodiments of the present invention, a method of forming an optical device and a method for determining a parameter of a fluid are also provided.

Abstract: A wireless chargeable game device of the present invention comprises a body and a charging device. A transmitting circuit of wireless charging is provided in a case of the charging device, and a receiving circuit of wireless charging is provided in a case of the body. While charging, the transmitting circuit of the charging device is connected to the receiving circuit of the body by electromagnetic coupling. The wireless chargeable game device of the present invention is charged wireless to make the charging process easy and convenient thereby improving the entertainment experience of people using the game device, and making the charging structure completely waterproof and dustproof to improve the service life. A series resonant circuit is driven by a fixed frequency generated by a single chip microcomputer for saving a frequency adjustment circuit so as to simplify the circuit and save the cost. (FIG.

Abstract: A fiber (Bragg) laser comprising a fiber with a cladding and a core having a (Bragg) grating inscribed in the core forming a laser cavity.

Abstract: An optical fiber or waveguide having a core and a cladding, the fiber/waveguide including a modified region or regions with a modified optical property that differs from the surrounding optical fiber/waveguide, wherein the cross sectional area of the modified region(s) is considerably smaller than the cross sectional area of the core of the fiber or waveguide.

Abstract: A dual wavelength optical fiber distributed feedback laser comprises a pump laser coupled to a birefringent fiber in which a first grating device (two co-located single phase-shift fiber Bragg gratings (FBGs)) is provided. The grating device gives the laser two potential lasing modes in each of two orthogonal polarization states. A polarization mode coupling FBG selects two orthogonally polarized modes on which the laser oscillates. In a photonic data carrying signal source, the laser is coupled to a polarization dependent, optical modulator operable to apply a modulation, at a data signal frequency, to one polarization mode of the laser output. In an optical waveguide based electronic signal transmission system the modulated and un-modulated polarization modes output from the source are transmitted across a fiber transmission line to a polarizing optical fiber in which the two modes heterodyne to generate an electronic carrier signal in the optical domain.

Abstract: A dual wavelength optical fiber distributed feedback laser comprises a pump laser coupled to a birefringent fiber in which a first grating device (two co-located single phase-shift fiber Bragg gratings (FBGs)) is provided. The grating device gives the laser two potential lasing modes in each of two orthogonal polarization states. A polarization mode coupling FBG selects two orthogonally polarized modes on which the laser oscillates. In a photonic data carrying signal source, the laser is coupled to a polarization dependent, optical modulator operable to apply a modulation, at a data signal frequency, to one polarization mode of the laser output. In an optical waveguide based electronic signal transmission system the modulated and un-modulated polarization modes output from the source are transmitted across a fiber transmission line to a polarizing optical fiber in which the two modes heterodyne to generate an electronic carrier signal in the optical domain.