WO2016158091A1 - Dispositif à fibre optique - Google Patents

Dispositif à fibre optique Download PDF

Info

Publication number
WO2016158091A1
WO2016158091A1 PCT/JP2016/055171 JP2016055171W WO2016158091A1 WO 2016158091 A1 WO2016158091 A1 WO 2016158091A1 JP 2016055171 W JP2016055171 W JP 2016055171W WO 2016158091 A1 WO2016158091 A1 WO 2016158091A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fiber
light
incident
wavelength
light source
Prior art date
Application number
PCT/JP2016/055171
Other languages
English (en)
Japanese (ja)
Inventor
裕貴 山田
清水　昭宏
Original Assignee
ウシオ電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ウシオ電機株式会社 filed Critical ウシオ電機株式会社
Publication of WO2016158091A1 publication Critical patent/WO2016158091A1/fr

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action

Definitions

  • the present invention relates to an optical fiber device, and more particularly to an optical fiber device that utilizes leaked light from the side surface of the optical fiber.
  • Patent Document 1 there is a technique of using leakage light from the side surface of an optical fiber for illumination or the like (for example, see Patent Document 1).
  • An optical fiber capable of leaking light from the side face is described in Patent Document 2, for example.
  • Patent Document 2 in order to reduce the optical loss, it is disclosed that the brightness is kept uniform by making light enter the optical fiber as straight as possible.
  • the optical fiber When light travels through the optical fiber, light loss occurs as it travels in the optical fiber axial direction. As a result, when leakage light from the side surface of the optical fiber is used for illumination or the like, the brightness of the fiber side surface differs between a region near the end surface on the incident side of the optical fiber and a region away from the end surface.
  • an object of the present invention is to provide an optical fiber device that suppresses a loss of light traveling in an optical fiber as compared with a conventional device.
  • An optical fiber device includes: A light source unit for generating laser light; An optical element on which light emitted from the light source unit is incident; A first optical fiber that receives light emitted from the optical element and can leak light from a side surface; The incident angle distribution indicated by the light incident on the incident end face of the first optical fiber is wider than the incident angle distribution indicated by the light incident on the incident end face of the optical element.
  • the inventors' diligent research has found that the loss of light in the optical fiber is affected by the incident angle of light at the end face on the incident side of the optical fiber.
  • a case where light is incident with a small incident angle on the incident side end face of the optical fiber is compared with a case where light is incident with a large incident angle.
  • the number of reflections repeated in the optical fiber is greater in the latter than in the former.
  • an optical fiber device that uses leakage light from the side surface of an optical fiber when light incident from the end surface on the incident side of the optical fiber travels to the side surface of the optical fiber, Light passes through the cladding and is emitted to the outside. Also, some is lost as heat. For this reason, as the number of reflections increases, the intensity decreases as the light travels in the optical axis direction of the optical fiber.
  • the optical fiber has an elongated shape and has a property of being easily bent. For this reason, in particular, when leaking light from the side surface is used for illumination purposes, the optical fiber can be twisted according to the shape of the place to be illuminated. In other words, it is practically difficult to arrange the optical fiber on a straight line without bending, and it is usually used in a bent state. Moreover, it has the property that the arrangement
  • the angle of light incident on the side surface of the optical fiber changes at the bent portion. For this reason, even for light with a small incident angle at the end surface on the incident side of the optical fiber, the incident angle with respect to the side surface of the optical fiber changes at the curved portion of the optical fiber, and the reflection frequency on the side surface of the optical fiber thereafter increases. It is possible to increase. In this case, as described above, the loss in the optical fiber increases.
  • the incident angle distribution of the light at the end face on the incident side of the first optical fiber is widened by making the light incident on the optical fiber (first optical fiber) through the optical element. That is, the light incident on the incident side end face of the first optical fiber has many incident angle components.
  • the angle of light incident on the side surface of the first optical fiber changes after passing through the bent portion.
  • the light incident on the first optical fiber includes light having many angular components, and therefore, after passing through the bent portion, the reflection on the side surface While there is light that increases in frequency, there is also light that decreases in frequency of reflection. In other words, even when the first optical fiber is used in a curved state, loss of light is suppressed, and sufficient light intensity is maintained even at a position away from the end surface on the incident side of the first optical fiber in the optical axis direction. can do.
  • the optical element may be composed of a second optical fiber for guiding light. Once the laser light is incident on the second optical fiber, the light travels while being repeatedly reflected in the second optical fiber and is emitted to the first optical fiber. Since light of many angular components is mixed in the second optical fiber, light having a wide angular distribution with respect to the first optical fiber can be obtained by making the light emitted from the second optical fiber enter the first optical fiber. Can be incident.
  • the second optical fiber may be curved at some locations.
  • the second optical fiber may be arranged so that the end surface on the emission side of the second optical fiber is not parallel to the end surface on the incident side of the first optical fiber.
  • the optical element is not limited to an optical fiber as long as it can expand the angular distribution of light, and for example, a diffusion plate or the like can be used.
  • the optical fiber device has In the case where the wavelength is 380 nm or more and less than 500 nm is a blue region, the wavelength 500 nm or more and less than 580 nm is a green region, and the wavelength 580 nm or more and less than 700 nm is a red region,
  • the light source unit may include a semiconductor laser element that generates laser light having a wavelength longer than a specific wavelength in which the attenuation constant at the wavelength of light traveling in the first optical fiber is maximum in the same color region. I do not care.
  • FIG. 1A is a graph showing an example of loss characteristics of a first optical fiber used as an optical fiber for side light emission.
  • the horizontal axis indicates the wavelength of light to be transmitted through the optical fiber, and the vertical axis indicates the attenuation constant.
  • FIG. 1B is an enlarged view of the wavelength range of 600 nm to 700 nm in FIG. 1A.
  • the ease of loss (attenuation constant) in an optical fiber varies depending on the wavelength of light.
  • the attenuation constant shows a maximum value near the wavelength of 635 nm.
  • the wavelength 635 nm corresponds to the specific wavelength.
  • an optical fiber having loss characteristics as shown in FIG. 1A it is assumed that laser light having a wavelength of 635 nm, for example, is used as light in the red region.
  • FIG. 1B since the attenuation constant for light with a wavelength of 635 nm is high, compared with the case where light having a shorter wavelength (for example, 625 nm) or longer wavelength (for example, light having a wavelength of 645 nm) is used.
  • the loss in the first optical fiber increases. Therefore, in the first optical fiber having the characteristics shown in FIG. 1A, in order to maintain the emission intensity as much as possible in the fiber axis direction, light having a shorter wavelength or longer wavelength is used instead of the specific wavelength of 635 nm. It can be seen that it is preferable to use.
  • the semiconductor laser element continues to emit light, the temperature rises due to deterioration or the like, and accordingly, the oscillation wavelength shifts to the long wavelength side.
  • the wavelength of the light emitted from the light source unit is shifted to the long wavelength side with time, and as a result, the first optical fiber is Will increase the damping constant.
  • the wavelength of light emitted from the light source unit with time is shifted to the long wavelength side by using light having a wavelength longer than 635 nm. Even so, the attenuation constant in the first optical fiber tends to decrease. Thereby, the emission intensity can be maintained as much as possible in the optical axis direction in the first optical fiber.
  • the first optical fiber having an attenuation characteristic as shown in FIG. 1A and FIG. 1B has been taken as an example, but in general, in the case of using the first optical fiber having a maximum value in the attenuation characteristic, Similarly, the same effect is realized by using light having a wavelength longer than the specific wavelength exhibiting the maximum value. However, even though the light has a longer wavelength than the specific wavelength, for example, when the light in the red region is used, although the specific wavelength is in the blue region, the emission color has changed significantly in the first place. End up. Therefore, by using light having a wavelength longer than the specific wavelength in the same color region, the emission intensity in the first optical fiber is maintained at the same level while maintaining the emission intensity as much as possible in the fiber axis direction. be able to.
  • the light source unit has a wavelength longer than a specific wavelength at which the attenuation constant at the wavelength of the light traveling in the first optical fiber is a maximum in the same color region, and the attenuation constant is a minimum.
  • a semiconductor laser element that generates laser light having a shorter wavelength than another specific wavelength shown may be included.
  • the light source unit may generate two or more different wavelengths of laser light. According to said structure, since the loss in a 1st optical fiber can be suppressed irrespective of a wavelength, the change of the color of the fiber axial direction in a 1st optical fiber can be suppressed.
  • optical fiber device of the present invention loss of light traveling in the optical fiber can be suppressed as compared with the conventional device.
  • FIG. 1 It is a graph which shows an example of the loss characteristic of a 1st optical fiber. It is the graph which expanded a part of Drawing 1A. It is an example of the block diagram which shows typically the optical fiber device of 1st embodiment. It is a graph for demonstrating that the angle distribution of light spreads by passing a 2nd optical fiber. It is an example of the block diagram which shows typically the optical fiber device of 1st embodiment. It is drawing which shows typically the structure of the optical fiber apparatus used for verification. It is a graph which shows angle distribution of the light which injects into the end surface of the incident side of a 1st optical fiber in each case of Example 2, Example 3, and the comparative example 1.
  • FIG. 1 shows an example of the loss characteristic of a 1st optical fiber. It is the graph which expanded a part of Drawing 1A. It is an example of the block diagram which shows typically the optical fiber device of 1st embodiment. It is a graph for demonstrating that the angle distribution of light spreads by passing a 2nd optical fiber. It is an example of
  • FIG. 2 It is the graph which evaluated the loss in a 1st optical fiber in each case of Example 2, Example 3, and the comparative example 1.
  • FIG. 2 It is the graph which evaluated the loss in a 1st optical fiber in each case of Example 2, Example 3, and the comparative example 1.
  • FIG. It is a graph which shows an example of the loss characteristic of a 1st optical fiber. It is a graph which shows an example of the loss characteristic of a 1st optical fiber.
  • FIG. 2 is an example of a block diagram schematically showing the optical fiber device of the first embodiment.
  • the optical fiber device 1 includes a light source unit 3 including a plurality of light sources (31, 32, 33,...), A light guide optical fiber 5 into which light emitted from the light source unit 3 is incident, and an optical fiber 5. And a side-emitting optical fiber 7 into which the propagated light is incident.
  • the optical fiber 7 is referred to as “first optical fiber 7”
  • the optical fiber 5 is referred to as “second optical fiber 5”.
  • FIG. 2 illustrates the case where the second optical fiber 5 is a bundle fiber, it is not always necessary to be a bundle fiber.
  • the light source 31 includes a semiconductor laser element 31a that emits light of a certain wavelength, and a collimator lens 31b that converts the light emitted from the semiconductor laser element 31a into parallel light.
  • Laser light emitted from each semiconductor laser element (31a,%) Is converted into parallel light via a corresponding collimator lens (31b,%) And then incident on the second optical fiber 5.
  • the laser light emitted from the semiconductor laser element (31a,%) With high efficiency such as the distance between the semiconductor laser element (31a,%) And the end face on the incident side of the second optical fiber 5 is close.
  • the collimating lens (31b,...) Need not necessarily be provided.
  • the wavelengths of light emitted from the light sources (31, 32, 33,...) are the same.
  • this wavelength is 640 nm.
  • the case where light of a plurality of wavelengths is emitted from the light source unit 3 will be described later.
  • the light incident on the first optical fiber 7 via the second optical fiber 5 is taken out as leaked light 20 from the side surface of the first optical fiber 7 and used for illumination, for example.
  • the optical axis of the first optical fiber 7 is denoted by reference numeral 10.
  • the light emitted from the light source unit 3 is once incident on the first optical fiber 7 via the second optical fiber 5.
  • the distribution of incident angles of light incident on the end surface 7a is expanded.
  • the angular distribution can be further expanded by bending the second optical fiber 5 on a part of the first optical fiber 7 instead of arranging it on a straight line.
  • FIG. 3 is a simulation result for explaining that the angular distribution of light is expanded by passing through the second optical fiber 5.
  • the vertical axis and the horizontal axis indicate the direction cosine of the direction vector of the incident light incident on the end face 7 a of the first optical fiber 7.
  • light and dark indicate relative values of the light emission intensity for each incident angle, and regions having higher radiation intensity values are displayed as whitish on the drawing.
  • two orthogonal axes on the plane including the end face 7a are taken as an X axis and a Y axis, respectively.
  • the direction of the optical axis 10 of the first optical fiber 7, that is, the direction orthogonal to the plane (XY plane) formed by the X axis and the Y axis is defined as the Z axis direction.
  • Example 1 is a graph showing the angular distribution of light emitted from the second optical fiber 5 when laser light is incident on the second optical fiber 5 from one light source 31 in the light source unit 3.
  • Reference Example 1 corresponds to a case where light emitted from the light source unit 3 is directly incident on the first optical fiber 7 without passing through the second optical fiber 5.
  • Reference Example 2 corresponds to the case where a light guiding glass rod is disposed in place of the second optical fiber 5 in the configuration of Example 1.
  • the second optical fiber 5 is softer and easier to bend than the light guiding glass rod.
  • the optical axis of the second optical fiber 5 extends from the end surface on the incident side of the second optical fiber 5 to the end surface on the emission side, and the incident side of the first optical fiber 7. It is difficult to match with the direction orthogonal to the end face 7a.
  • the distribution of the radiation intensity spreads concentrically, and the effect of expanding the angular distribution is obtained as compared with the configuration of Reference Example 1, that is, when no glass rod is arranged.
  • the intensity of light of an angle component other than the vicinity of the incident angle indicating the peak is weak.
  • the light which injects into the 1st optical fiber 7 shows various incident angles. In other words, light having a wide angular distribution can be incident on the first optical fiber 7 by causing the light emitted from the light source unit 3 to enter the first optical fiber 7 once through the second optical fiber 5.
  • the second optical fiber 5 is arranged in a partially bent state, so that the incident angle on the side surface of the second optical fiber 5 changes at this location, and as a result, light having many angle components is emitted. It is inferred that it was generated.
  • FIG. 4 corresponds to a configuration in which the incident-side end surface 7a of the first optical fiber 7 is inclined by an angle ⁇ with respect to the emission-side end surface of the second optical fiber 5 from the configuration of FIG.
  • FIG. 5 is a drawing schematically showing the configuration of the optical fiber device used for the verification, wherein (a) corresponds to a schematic view when viewed from above, and (b) is a schematic when viewed from the side. Corresponds to the figure.
  • the light source unit 3 is simulated by one light source 32, and the light emitted from the light source unit 3 is transmitted through the second optical fiber 5 to the first optical fiber. 7 was incident.
  • Example 2 the emission-side end face of the second optical fiber 5 and the incident-side end face 7a of the first optical fiber 7 were made parallel.
  • Example 3 as shown in FIG. 4, the end surface on the emission side of the second optical fiber 5 and the end surface 7 a on the incident side of the first optical fiber 7 are arranged so as to be inclined by an angle ⁇ . More specifically, in Example 2, the angle ⁇ was 0 °, and in Example 3, the angle ⁇ was 10 °.
  • Example 2 and Example 3 the incident angle to the side surface of the second optical fiber 5 was changed by bending the second optical fiber 5 in a spiral at one place (region 6). More specifically, as the second optical fiber 5, an optical fiber having a total length of 5 m, a core diameter of 800 ⁇ m, and an NA of 0.22 is used, the bending radius in the region 6 is 160 mm, and the length before and after the region 6 is Each was 2000 mm. The interval between the second optical fibers 5 in the region 6 was 5 mm.
  • the light source unit 3 is simulated by one light source 32, and light emitted from the light source unit 3 is directly incident on the first optical fiber 7 without passing through the second optical fiber 5. It was.
  • FIG. 6 is a graph showing the angular distribution of light incident on the end surface 7a on the incident side of the first optical fiber 7 in each of Example 2, Example 3, and Comparative Example 1.
  • the horizontal axis indicates the incident angle of light with respect to the end face 7a of the first optical fiber 7, and the vertical axis indicates the relative value of the light emission intensity for each incident angle. Yes.
  • Example 2 and Example 3 in which the light emitted from the light source unit 3 through the second optical fiber 5 is incident on the first optical fiber 7, the first optical fiber is compared with the first comparative example. It can be seen that the light incident on 7 includes light having many angle components. Furthermore, the angular distribution of light incident on the first optical fiber 7 is wider in the third embodiment than in the second embodiment. From this, the angle of the light incident on the first optical fiber 7 can be obtained by disposing the end surface 7a on the incident side of the first optical fiber 7 non-parallel to the end surface on the emission side of the second optical fiber 5. It can be seen that the effect of further expanding the distribution can be obtained.
  • FIG. 7 and 8 are graphs in which loss in the first optical fiber 7 is evaluated in each case of Example 2, Example 3, and Comparative Example 1.
  • FIG. 7 and 8 the horizontal axis indicates the distance in the direction of the optical axis 10 from the incident-side end surface 7a in the first optical fiber 7, and the vertical axis indicates the light intensity ratio. The value on the vertical axis will be described.
  • first state that is, in the state showing the angular distribution shown in FIG.
  • first state the luminance values of leaked light from four side surfaces that are 10 m, 20 m, 30 m, and 40 m away from the end surface 7 a in the direction of the optical axis 10 are calculated.
  • second state the embodiment is similarly performed.
  • the luminance value of the leaked light from the four side surfaces is calculated.
  • the relative value of the luminance value at each measurement location in the second state with respect to the first state is calculated as the “light intensity ratio”.
  • the loss in the first optical fiber 7 increases as the number of reflections on the side surface of the first optical fiber 7 increases. Therefore, it is assumed that the loss (attenuation rate) per unit length in the direction of the optical axis 10 is proportional to the number of reflections per unit length in the direction of the optical axis 10 on the side surface of the first fiber 7.
  • the loss in one reflection on the side surface of the first optical fiber 7 was 0.2%. This is a numerical value derived from experimental values when an optical fiber with NA of 0.65 is used as the first optical fiber 7.
  • the light propagation angle in the first optical fiber 7 changed by 0.5 ° (FIG. 7) and 1 ° (FIG. 8).
  • the four-point measurement is performed when the second state angle distribution is derived from the angle distribution shown in FIG. 6 and light having the newly derived angle distribution is incident on the first optical fiber 7.
  • the luminance value at the point was calculated for each of Example 2, Example 3, and Comparative Example 1. Then, a relative value with the luminance value in the first state was calculated and graphed.
  • the brightness value is significantly larger in the case of Comparative Example 1 than in Example 2 and Example 3 after the handling state of the first optical fiber 7 is changed. It can be seen that it has dropped.
  • the second optical fiber 5, the emission-side end face, and the incident-side end face 7 a of the first optical fiber 7 are arranged non-parallel so that the light intensity is further reduced as compared with the second embodiment. It can be seen that is suppressed.
  • the first optical fiber 7 is an optical fiber for side light emission, and it is assumed that the leaked light 20 is used for applications such as illumination. For this reason, it is assumed that the arrangement mode of the first optical fiber 7 is appropriately changed according to the place to be illuminated. In addition, since the first optical fiber 7 itself is soft and easy to bend, it is conceivable that the manner of arrangement easily changes.
  • the wavelength of light emitted from the light source unit 3 is set to be longer than the wavelength (specific wavelength) at which the attenuation constant exhibits a maximum value on the curve indicating the loss characteristics of the first optical fiber 7.
  • the first optical fiber 7 exhibits attenuation characteristics as shown in FIGS. 1A and 1B.
  • the attenuation constant shows a maximum value near the wavelength of 635 nm.
  • light having a wavelength longer than 635 nm is emitted from the light source unit 3.
  • 1A and 1B are examples of attenuation characteristics of a side-emitting optical fiber manufactured by 3M.
  • the semiconductor laser elements (31a,%) are often feedback controlled so as to reach a predetermined temperature. However, it is possible to detect the temperature of the light emitting point itself of the semiconductor laser elements (31a,). Since it is difficult, usually, a temperature at a position slightly away from the light emitting point is detected, and feedback control is performed based on this temperature. Therefore, it is difficult to keep the temperature of the semiconductor laser elements (31a,%) Constant, and the oscillation wavelength is shifted to the long wavelength side over time.
  • the light source unit 3 emits light having a wavelength longer than the specific wavelength exhibiting the maximum value, so that the light emitted from the light source unit 3 is shifted to the long wavelength side over time.
  • the damping constant tends to decrease. Thereby, the phenomenon that the emitted light intensity in the 1st optical fiber 7 falls with time is suppressed.
  • the light source unit 3 emits light having a wavelength longer than the specific wavelength indicating the maximum value and shorter than the wavelength indicating the minimum value.
  • the vicinity of 660 nm is the minimum value of the attenuation characteristic.
  • the light source unit 3 is preferably configured to emit light having a wavelength longer than 635 nm and shorter than 660 nm.
  • FIG. 9A and 9B are graphs showing attenuation characteristics of the first optical fiber 7 made of a material different from that shown in FIG. 1A.
  • FIG. 9A is a graph showing the attenuation characteristic of an optical fiber manufactured by Innovative Lighting
  • FIG. 9B is a graph showing the attenuation characteristic of an optical fiber manufactured by Mitsubishi Rayon.
  • These optical fibers also have a maximum value in attenuation characteristics. More specifically, the example of FIG. 9A has a maximum value at a wavelength near 625 nm, and the example of FIG. 9B has a maximum value at a wavelength near 622 nm.
  • the light source unit 3 is made to emit light having a wavelength longer than the above-described wavelengths (625 nm, 622 nm), for example, light having a wavelength of 635 nm.
  • emits By setting it as the structure which inject
  • light of a plurality of wavelengths may be emitted from the light source unit 3.
  • the light source unit 3 may emit light of each color region. Absent.
  • the loss in the first optical fiber 7 is reduced, the light emission color changes as the light travels in the first optical fiber 7 or the light emission intensity decreases. Can be suppressed.
  • the light source 3 can emit light having a wavelength longer than the specific wavelength in the same color region.
  • the loss in the first optical fiber 7 tends to decrease even if the wavelength of the light emitted from the light emitting unit 3 is shifted to the long wavelength side over time. As a result, the change in emission color in the first optical fiber 7 is suppressed.
  • an optical fiber having attenuation characteristics shown in FIG. 9B has a maximum value in the vicinity of a wavelength of 545 nm in the green region (wavelength of 500 nm or more and less than 580 nm), and a wavelength in the red region (wavelength of 580 nm or more and less than 700 nm). It has a maximum value in the vicinity of 622 nm.
  • the light source unit 3 included in the optical fiber device 1 emits light having a wavelength longer than 545 nm, for example, light having a wavelength of 560 nm, as light in the green region.
  • the light in the region As the light in the region, light having a wavelength longer than 622 nm, for example, light having a wavelength of 640 nm is emitted. Thereby, the phenomenon that the luminescent color in the 1st optical fiber 7 changes with time is suppressed.
  • the first optical fiber 7 for example, an optical fiber having a core made of an acrylic resin can be used, but the material is not limited to this.
  • the second optical fiber 5 is preferably configured to have a smaller diameter than the first optical fiber 7. Thereby, the amount of light leakage can be minimized while the light emitted from the second optical fiber 5 is incident on the first optical fiber 7.
  • the angle ⁇ between them is set to the first optical fiber. It is preferable that the NA is 7 or less. Thereby, the amount of light leakage can be minimized while the light emitted from the second optical fiber 5 is incident on the first optical fiber 7.
  • the light source unit 3 includes the semiconductor laser element (31a,...) Has been described. However, not only the semiconductor laser element but also an element that generates laser light can be employed. .
  • Optical fiber device 3 Light source unit 5: Second optical fiber 6: Curved portion of the second optical fiber 7: First optical fiber 7a: End face on the incident side of the first optical fiber 10: Optical axis of the first optical fiber 20: Leakage light 31, 32, 33: Light source 31a: Semiconductor laser element 31b: Collimating lens

Abstract

L'invention a pour objet d'obtenir un dispositif à fibre optique dans lequel une perte de lumière se déplaçant dans une fibre optique est supprimée. Le dispositif à fibre optique selon l'invention comprend: une unité de source de lumière qui génère une lumière laser; un élément optique dans lequel la lumière émise par l'unité de source de lumière entre; et une première fibre optique dans laquelle la lumière émise par l'élément optique entre et qui est capable de faire fuir de la lumière à partir d'une surface latérale. La distribution d'angle d'incidence indiquée par la lumière entrée dans une surface d'extrémité côté entrée de la première fibre optique est plus large que la distribution d'angle d'incidence indiquée par la lumière entrée dans une surface d'extrémité côté entrée de l'élément optique.
PCT/JP2016/055171 2015-03-31 2016-02-23 Dispositif à fibre optique WO2016158091A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2015-074440 2015-03-31
JP2015074440A JP2016195043A (ja) 2015-03-31 2015-03-31 光ファイバ装置

Publications (1)

Publication Number Publication Date
WO2016158091A1 true WO2016158091A1 (fr) 2016-10-06

Family

ID=57005546

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2016/055171 WO2016158091A1 (fr) 2015-03-31 2016-02-23 Dispositif à fibre optique

Country Status (2)

Country Link
JP (1) JP2016195043A (fr)
WO (1) WO2016158091A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107388084A (zh) * 2017-08-15 2017-11-24 杨林 光纤激光照明装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018191220A1 (fr) * 2017-04-11 2018-10-18 Corning Incorporated Systèmes d'éclairage pour fibres optiques de diffusion de lumière

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000174398A (ja) * 1998-12-10 2000-06-23 Sony Corp 半導体発光装置、指示装置および光伝送装置
JP2004517370A (ja) * 2001-01-20 2004-06-10 ドイッチェ テレコム アーゲー 光源からの光を媒体内に注入する光学システム
JP2010175579A (ja) * 2009-01-27 2010-08-12 Fujifilm Corp ライトガイド及び光源装置並びに内視鏡システム
JP2014220245A (ja) * 2006-12-22 2014-11-20 オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツングＯｓｒａｍ ＯｐｔｏＳｅｍｉｃｏｎｄｕｃｔｏｒｓ ＧｍｂＨ 発光装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000174398A (ja) * 1998-12-10 2000-06-23 Sony Corp 半導体発光装置、指示装置および光伝送装置
JP2004517370A (ja) * 2001-01-20 2004-06-10 ドイッチェ テレコム アーゲー 光源からの光を媒体内に注入する光学システム
JP2014220245A (ja) * 2006-12-22 2014-11-20 オスラム オプト セミコンダクターズ ゲゼルシャフト ミット ベシュレンクテル ハフツングＯｓｒａｍ ＯｐｔｏＳｅｍｉｃｏｎｄｕｃｔｏｒｓ ＧｍｂＨ 発光装置
JP2010175579A (ja) * 2009-01-27 2010-08-12 Fujifilm Corp ライトガイド及び光源装置並びに内視鏡システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107388084A (zh) * 2017-08-15 2017-11-24 杨林 光纤激光照明装置

Also Published As

Publication number Publication date
JP2016195043A (ja) 2016-11-17

Similar Documents

Publication Publication Date Title
JP5908559B1 (ja) 光カプラ、レーザ装置、及びテーパファイバ
US20150055916A1 (en) Optical combiner and laser device using the same
JP2012159749A (ja) ベッセルビーム発生装置
US9759866B2 (en) Optical combiner, laser device using same, and method for manufacturing optical combiner
CN101246236A (zh) 用于消散杂散光的光纤配置
WO2017022717A1 (fr) Guide d'ondes optiques à résine
US8665514B2 (en) Multi-core optical amplification fiber wound with decreasing radius of curvature
WO2016158091A1 (fr) Dispositif à fibre optique
US20120236295A1 (en) Method of measuring bending performance of optical fiber
CN103988125A (zh) 激光光源装置以及影像显示装置
JP5820034B2 (ja) 光デバイスおよびファイバレーザ装置
WO2017022719A1 (fr) Guide d'ondes optique en résine
JP2008198637A (ja) 高強度光伝播用光ファイバ終端処理構造、光増幅装置及びファイバレーザ
JP2010210404A (ja) 蛍光温度センサ
JP2012194448A (ja) 光コネクタおよび内視鏡システム
JP6740273B2 (ja) ファイバレーザ装置
JP6208797B2 (ja) 光カプラ、及びレーザ装置
JP5479305B2 (ja) 光ファイバ、及び、これを用いたレーザ装置
US9946040B2 (en) Optical fibers without cladding
CN105319642B (zh) 保偏(pm)双包层(dc)光纤
JP6390443B2 (ja) 光ファイバ装置
JP6456427B2 (ja) コンバイナ、及び、レーザ装置
JP2018018724A (ja) 発光装置、および、発光装置システム
KR20220003217A (ko) 광학 영상 장비의 초점 심도 향상 장치
JP2019061277A (ja) コンバイナ、及び、レーザ装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16771975

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16771975

Country of ref document: EP

Kind code of ref document: A1