Abstract: A single-mode crystal fiber is provided. The fiber has a core. The core is made of a crystalline material with a melting point above 1900 degrees Celsius (° C.). The core has a coat. The coat is made of a crystalline material the same as that of the core. Through immersion plating under a low vacuum pressure and a high temperature, the material of the coat is sintered to form an outer layer covering the core. Thus, the thickness of the coat is controlled. A single crystal totally the same as that of the core is grown in a solid state with no ceramics contained. Consequently, the crystal contains no ceramics; and, through being sintered in a vacuum environment, the crystal has pores the smallest in size and the fewest in number, as compared to those sintered under a normal pressure.

Abstract: Provided herein are devices and systems comprising an illumination module configured to provide a source light to an optical interference module, which converts the source light to a line of light and processes light signal; an interference objective module, which handles light from the optical interference module and processes light signal generated from a sample; a two-dimensional camera configured to receive a backscattered interference signal from the sample, and a data processing module which processes the interference signal into an image.

Abstract: Provided herein are devices and systems comprising an illumination module configured to provide a source light to an optical interference module, which converts the source light to a line of light and processes light signal; an interference objective module, which handles light from the optical interference module and processes light signal generated from a sample; a two-dimensional camera configured to receive a backscattered interference signal from the sample, and a data processing module which processes the interference signal into an image.

Abstract: Provided herein are devices and systems that apply full-field optical coherence tomography (OCT) technology to three-dimensional skin tissue imaging. A special designed Mirau type objective and an optical microscope module allowing both OCT mode and orthogonal polarization spectral imaging (OPSI) mode are disclosed.

Abstract: Provided herein are devices and systems that apply full-field optical coherence tomography (OCT) technology to three-dimensional skin tissue imaging. A special designed Mirau type objective and an optical microscope module allowing both OCT mode and orthogonal polarization spectral imaging (OPSI) mode are disclosed.

Abstract: Provided herein are devices and systems that apply full-field optical coherence tomography (OCT) technology to three-dimensional skin tissue imaging. A special designed Mirau type objective and an optical microscope module allowing both OCT mode and orthogonal polarization spectral imaging (OPSI) mode are disclosed.

Abstract: An optical apparatus applied to ophthalmology detection is disclosed. The optical apparatus includes a first light source module, a second light source module, and an interference module. The first light source module is formed by a laser light source and lens units and used to emit a first light signal. The second light source module is formed by fiber units and lens units. The second light source module is coupled to the first light source module in series. The second light source module is used to receive a first light signal and emit a second light signal. The interference module is coupled to the second light source module and used to receive the second light signal and provide a first incident light and a second incident light to an object to be detected and a reference mirror respectively.

Abstract: Provided herein are devices and systems that apply full-field optical coherence tomography (OCT) technology to three-dimensional skin tissue imaging. A special designed Mirau type objective and an optical microscope module allowing both OCT mode and orthogonal polarization spectral imaging (OPSI) mode are disclosed.

Abstract: A side grating based light coupling system comprises an optical fiber, a side grating disposed on one side of the lateral wall of the optical fiber, and a laser array disposed adjacent to the other side of the lateral wall of the optical fiber. The side grating comprises a plurality of grating elements arranged in a non-uniform arrangement. The laser array for generating a laser beam towards and passes through the optical fiber, and the laser beam is converted into at least one laser beam through the plurality grating elements. The diffraction efficiencies of the converted laser beams are different. The converted laser beams propagate inside the optical fiber based on total internal reflection. The plurality of grating elements of the side grating are heterogeneous arrangement without loading the optical collimating lens, and can reduce scattering loss by controlling the asymmetric diffraction efficiency, to improve optical coupling efficiency.

Abstract: A light source module of an optical apparatus is disclosed. The light source module includes a laser pump unit, a lens unit, and a fiber unit. The laser pump unit generates a laser source. The lens unit converts the laser source into a condensed beam. The fiber unit receives the condensed beam and emits an optical signal. The light source module can achieve effects of low cost, large bandwidth, high resolution, and high stability with well-designed pump power of the laser pump unit, and length, doping material, and core size of the fiber unit.

Abstract: The present invention relates to a manufacturing method of a double cladding crystal fiber, in which growing an YAG or a sapphire into a single crystal fiber by LHPG method, placing the single crystal fiber into a glass capillary for inner cladding, placing the single crystal fiber together with the glass capillary for inner cladding into a glass capillary for outer cladding in unison, heating the glass capillary for inner cladding and outer cladding by the LHPG method to attach to the outside of the single crystal fiber, and thus growing into a double cladding crystal fiber. When the present invention is applied to high power laser, by using the cladding pumping scheme, the high power pumping laser is coupled to the inner cladding layer, so the problems of heat dissipation and the efficiency impairment due to energy transfer up-conversion of high power laser are mitigated.

Abstract: A method for measuring characteristics of a sample is provided. The method includes the following steps: obtaining an interference spectrum of the sample; transforming the interference spectrum into a temporal interference signal via a Fourier transform, in which the temporal interference signal includes a plurality of coherence wave packets; separating the wave packets; transforming the wave packets into a plurality of interface interference signals via an inverse Fourier transform; and fitting a plurality of factors of the interface interference signals into a model for obtaining the refractive indexes, the extinction coefficients, and a thickness of the sample.

Abstract: A scan lens and an interferometric measuring device using the scan lens are disclosed. The scan lens includes a lens set, a beam splitter, and a reflector disposed between the lens set and the beam splitter. During application the applied light beam passes through the lens set of the interferometric measuring device to fall upon the beam splitter where the light beam that passes through the beam splitter is defined as a first light beam and the light beam that is reflected by the beam splitter is defined as a second light beam. The first light beam is projected onto the test object. The second light beam is projected onto the reflector. The second light beam reflected by the reflector and the first light beam reflected or scattered by the test object will interfere with each other to form interference patterns for measuring the test object.

Abstract: The present invention relates to a crystal fiber, and more particularly to a Ti: sapphire crystal fiber, a manufacturing method thereof, and a wide band light source with the same. The Ti: sapphire single crystal is grown by means of laser-heated pedestal growth (LHPG) method into a crystal fiber of a predetermined diameter. The as-grown crystal fiber is annealed for enhancing its fluorescence and reducing the infra-red residual absorption. The annealed crystal fiber is inserted into a glass capillary and is grown into a single-clad crystal fiber. The wide band light source comprises: a pumping source for providing a pumping light; a single-clad Ti: sapphire crystal fiber for absorbing the pumping light and emitting the wide band light.

Abstract: An optical device for corneal measuring includes a light source module, a first optical module, a second optical module including a reference mirror, a light splitter and an image analysis unit. The light of the light source module is transmitted to the first and second optical modules through the light splitter. The light is transmitted to a cornea through the light splitter and the first optical module and reflected by the cornea to form a first light, the light is transmitted to the reference mirror through the light splitter and reflected by the reference mirror to form a second light. The first and second lights are transmitted to the light splitter and the image analysis unit. The reference mirror moves along a first direction, and when the first light and the second light interfere with each other, a relative optical path length is obtained.

Abstract: An optical device for corneal measuring includes a light source module, a first optical module, a second optical module including a reference mirror, a light splitter and an image analysis unit. The light of the light source module is transmitted to the first and second optical modules through the light splitter. The light is transmitted to a cornea through the light splitter and the first optical module and reflected by the cornea to form a first light, the light is transmitted to the reference mirror through the light splitter and reflected by the reference mirror to form a second light. The first and second lights are transmitted to the light splitter and the image analysis unit. The reference mirror moves along a first direction, and when the first light and the second light interfere with each other, a relative optical path length is obtained.

Abstract: Provided herein are devices and systems that apply full-field optical coherence tomography (OCT) technology to three-dimensional skin tissue imaging. A special designed Mirau type objective and an optical microscope module allowing both OCT mode and orthogonal polarization spectral imaging (OPSI) mode are disclosed.

Abstract: The present invention relates to a manufacturing method of a double cladding crystal fiber, in which growing an YAG or a sapphire into a single crystal fiber by LHPG method, placing the single crystal fiber into a glass capillary for inner cladding, placing the single crystal fiber together with the glass capillary for inner cladding into a glass capillary for outer cladding in unison, heating the glass capillary for inner cladding and outer cladding by the LHPG method to attach to the outside of the single crystal fiber, and thus growing into a double cladding crystal fiber. When the present invention is applied to high power laser, by using the cladding pumping scheme, the high power pumping laser is coupled to the inner cladding layer, so the problems of heat dissipation and the efficiency impairment due to energy transfer up-conversion of high power laser are mitigated.

Abstract: The present invention relates to a double cladding crystal fiber and manufacturing method thereof, in which growing an YAG or a sapphire into a single crystal fiber by LHPG method, placing the single crystal fiber into a glass capillary for inner cladding, placing the single crystal fiber together with the glass capillary for inner cladding into a glass capillary for outer cladding in unison, heating the glass capillary for inner cladding and outer cladding by the LHPG method to attach to the outside of the single crystal fiber, and thus growing into a double cladding crystal fiber. When the present invention is applied to high power laser, by using the cladding pumping scheme, the high power pumping laser is coupled to the inner cladding layer, so the problems of heat dissipation and the efficiency impairment due to energy transfer up-conversion of high power laser are mitigated.

Abstract: The present invention relates to a crystal fiber, and more particularly to a Ti: sapphire crystal fiber, a manufacturing method thereof, and a wide band light source with the same. The Ti: sapphire single crystal is grown by means of laser-heated pedestal growth (LHPG) method into a crystal fiber of a predetermined diameter. The as-grown crystal fiber is annealed for enhancing its fluorescence and reducing the infra-red residual absorption. The annealed crystal fiber is inserted into a glass capillary and is grown into a single-clad crystal fiber. The wide band light source comprises: a pumping source for providing a pumping light; a single-clad Ti: sapphire crystal fiber for absorbing the pumping light and emitting the wide band light.