Abstract:
If an external force is exerted on a plastic photonic crystal by a piezoelectric device (3), the photonic crystal (2) deforms and the photonic band gap easily varies. As the photonic band gap varies, the passage of light of specific wavelength is limited. As a result, light of desired wavelength is sufficiently varied and outputted from the photonic crystal (2), and the light is taken out from an output window (6) to the outside. The scale of the variable wavelength light source is small since a plastic photonic crystal (2) for varying wavelength sufficiently even though the crystal is small is used and the light source and photonic crystal are accommodated in a unit.
Abstract:
A fiber coupling device comprises fixing parts 1V, to which the respective ends of two optical fibers 5 and 6 are fixed, photonic crystal 2, disposed inside the light path of light that propagates across the abovementioned ends, and external force application means 3, which applies an external force to photonic crystal 2. When an external force is applied by external force application means 3 to photonic crystal 2 while light is being propagated inside one optical fiber 5, the photonic band gap of photonic crystal 2 changes and light of a wavelength that is in accordance with this photonic band gap is output from the other optical fiber 5.
Abstract:
If an external force is exerted on a plastic photonic crystal by a piezoelectric device (3), the photonic crystal (2) deforms and the photonic band gap easily varies. As the photonic band gap varies, the passage of light of specific wavelength is limited. As a result, light of desired wavelength is sufficiently varied and outputted from the photonic crystal (2), and the light is taken out from an output window (6) to the outside. The scale of the variable wavelength light source is small since a plastic photonic crystal (2) for varying wavelength sufficiently even though the crystal is small is used and the light source and photonic crystal are accommodated in a unit.
Abstract:
A fiber coupling device comprises fixing parts 1V, to which the respective ends of two optical fibers 5 and 6 are fixed, photonic crystal 2, disposed inside the light path of light that propagates across the abovementioned ends, and external force application means 3, which applies an external force to photonic crystal 2. When an external force is applied by external force application means 3 to photonic crystal 2 while light is being propagated inside one optical fiber 5, the photonic band gap of photonic crystal 2 changes and light of a wavelength that is in accordance with this photonic band gap is output from the other optical fiber 5.
Abstract:
A fiber coupling device comprises fixing parts 1V, to which the respective ends of two optical fibers 5 and 6 are fixed, photonic crystal 2, disposed inside the light path of light that propagates across the abovementioned ends, and external force application means 3, which applies an external force to photonic crystal 2. When an external force is applied by external force application means 3 to photonic crystal 2 while light is being propagated inside one optical fiber 5, the photonic band gap of photonic crystal 2 changes and light of a wavelength that is in accordance with this photonic band gap is output from the other optical fiber 5.
Abstract:
A photonic crystal 2 with plasticity is arranged by making microspheres of silica or barium titanate or air bubbles be contained in a gel substance. When an external force is applied to this photonic crystal, photonic crystal 2 deforms and the photonic band gap is readily changed thereby. When the photonic band gap changes, the passage of light of a specific wavelength is restricted. Light of a desired wavelength is thus output from photonic crystal 2. With this invention, this wavelength can be varied readily by means of an external force.
Abstract:
Th end face (7a) of an optical fiber (7) and the end face (8a) of an optical fiber (8) are disposed in a V-groove (23) in a base (21) opposite to each other and a specified distance apart. A solution (27) serving as the material of a photonic crystal and containing fine particles is dripped into a space (25) defined by the end face (7a), the end face (8a) and the V-groove (23). Accordingly, a photonic crystals are respectively grown from the end face (7a) and the end face (8a) to thereby form optical control units containing photonic crystals (2) at the end face (7a) and the end face (8a) respectively.
Abstract:
If an external force is exerted on a plastic photonic crystal by a piezoelectric device (3), the photonic crystal (2) deforms and the photonic band gap easily varies. As the photonic band gap varies, the passage of light of specific wavelength is limited. As a result, light of desired wavelength is sufficiently varied and outputted from the photonic crystal (2), and the light is taken out from an output window (6) to the outside. The scale of the variable wavelength light source is small since a plastic photonic crystal (2) for varying wavelength sufficiently even though the crystal is small is used and the light source and photonic crystal are accommodated in a unit.
Abstract:
An optical fiber connector has fixing parts (1V, 1V) where ends of two optical fibers (5, 6) are fixed, a photonic crystal (2) disposed in the optical path where light is propagated between the ends, and external force exerting means (3) for exerting an external force on the photonic crystal (2). If an external force is exerted on the photonic crystal (2) by external force exerting means (3) while light is propagated through one optical fiber (5), the photonic band gap of the photonic crystal (2) varies, and light of a wavelength corresponding to the photonic band gap is outputted from the other optical fiber (6).
Abstract:
A photonic crystal (2) which comprises a material in a gel form and, arranged in the material, a plurality of micro-spheres of silica or barium titanate or micro pores. The application of an external force transforms the photonic crystal (2), which in turn changes the photonic band gap thereof. The change of the photonic band results in the restriction of the transmission of a light having a specific wave length through the photonic crystal, which allows the output of a light of a desired wave length from the photonic crystal (2). The photonic crystal can easily change the wavelength of a light outputted therefrom by the change of an external force applied thereto.