公开(公告)号：JPS5863914A

公开(公告)日：1983-04-16

申请号：JP15351681

申请日：1981-09-28

Applicant: KAPTRON INC

Inventor： NARINDAA SHIN KAPANII ,  FURETSUDO CHIYAARUZU UNTAARAIT

IPC: H04B10/25 ,  G02B6/293 ,  G02B26/08 ,  G02B27/10 ,  H04B10/00

公开(公告)号：JPS6127512A

公开(公告)日：1986-02-07

申请号：JP14926884

申请日：1984-07-18

Applicant: Kaptron Inc

Inventor： NARINDAA ESU KAPANII ,  FURETSUDO SHII UNTAARAITONAA

IPC: G02B6/293 ,  G02B6/28

公开(公告)号：JPS61172107A

公开(公告)日：1986-08-02

申请号：JP16018284

申请日：1984-07-30

Applicant: KAPTRON INC

Inventor： NARINDAA ESU KAPANII ,  FURETSUDO SHII UNTAARAITONAA

IPC: G02B6/42 ,  G02B6/28 ,  G02B6/293

公开(公告)号：JPH0854532A

公开(公告)日：1996-02-27

申请号：JP10371295

申请日：1995-04-27

Applicant: KAPTRON INC

Inventor： NARINDAA ESU KAPANII ,  FURETSUDO SHII UNTAARAITONAA

IPC: G02B6/28

Abstract: PURPOSE: To uniformly distribute incident light to input fibers and output fibers by performing constitution by a transparent rod formed in a meandering shape for forming specified angular shift by a total amount. CONSTITUTION: This integrating element 17 can be a transmission shape 17T or a reflection shape 17R. In the transmission shape 17T, the integration element is composed of a glass rod, one end of it forms an entrance part 18 and the other end forms an exit part 20. When the light which enters the exit part 18 passing through the element at an optionally specified part, the integration element 17T loss spatial correlation with such a part. The light is scattered over the entire part, at the time of leaving the exit part 20. Then, in order to perform integration uniformly, the rod is made to meander and bent by turning the entire angular shift by 270 deg. or more. However, when it is bent to an angle considerably larger than 270 deg., bending loss increases without increasing the uniformity of the integration further. The entire length of the rod (the entire dimension of an integrator) is linearly proportional to a bending radius.

公开(公告)号：JPS60256105A

公开(公告)日：1985-12-17

申请号：JP11008185

申请日：1985-05-22

Applicant: KAPTRON INC

Inventor： NARINDAA ESU KAPANII ,  FURETSUDO SHII UNTAARAITONAA

IPC: G02B6/28 ,  G02B6/35

公开(公告)号：JPS60239701A

公开(公告)日：1985-11-28

申请号：JP9457485

申请日：1985-05-01

Applicant: KAPTRON INC

Inventor： NARINDAA ESU KAPANII ,  FURETSUDO SHII UNTAARAITONAA

IPC: G02B6/28

公开(公告)号：CA1249468A

公开(公告)日：1989-01-31

申请号：CA456287

申请日：1984-06-11

Applicant: KAPTRON INC

Inventor： KAPANY NARINDER S ,  UNTERLEITNER FRED C

IPC: G02B6/28 ,  G02B6/35 ,  G02B6/26 ,  G02B26/02

Abstract: IMPROVED SPLITTER FOR FIBER OPTICS A fiber optics splitter. In a first set of embodiments (10, 40), a two-way splitter comprises a transparent body having a spherical surface (30) which intercepts the entire light cone emanating from an input fiber, but has a reflective coating (30') on only part (typically one-half) to define a first reflector. A second spherical reflector (35, 45) is located behind it to intercept and image the remaining light. In a second set of embodiments (50, 60), a two-way splitter utilizes a transparent body having a portion defining a spherical reflective surface segment (53) intercepting and imaging part of the light cone to define the first reflector. The second spherical reflector (35, 45) is disposed downstream thereof to intercept and image the remaining light.

公开(公告)号：WO1993019391A1

公开(公告)日：1993-09-30

申请号：PCT/US1993002130

申请日：1993-03-08

Applicant: KAPTRON, INC. ,  WONG, Ren-Sue

Inventor： KAPTRON, INC.

IPC: G02B06/26

CPC classification number: G02B6/2551 ,  G02B6/266

Abstract: A method for fabricating single-mode and multi-mode attenuators characterized by a high level of wavelength insensitivity. A light source (22) is connected to one end of a fiber (12b) and the other end (12a) is connected to an optical power meter (18). The optical power meter (18) is set to a 0 dB reference. The fiber (12) is then cut and the cut ends cleaved to define first and second segments. The ends of the segments are offset and overlapped by an axial distance that is large relative to the fiber diameter. The overlapping ends are heated so that they assume a fused state, and the relative axial positioning of the fiber ends while they are in the plastic state is adjusted to achieve the desired degree of attenuation, as indicated on the meter (18).

公开(公告)号：WO1990011542A1

公开(公告)日：1990-10-04

申请号：PCT/US1990001472

申请日：1990-03-19

Applicant: KAPTRON, INC.

Inventor： KAPTRON, INC. ,  KAPANY, Narinder, Singh ,  UNTERLEITNER, Fred, Charles

IPC: G02B06/32

CPC classification number: H01S5/14 ,  G02B6/29308 ,  G02B6/2931 ,  G02B6/4204 ,  G02B6/4215 ,  G02B6/4246

Abstract: Multiple reflection modules having as a light source or a light target a lensed optical fiber (14) employ one or more spherical reflectors (16, 18) and wavelengths selectors (72) for selecting the wavelengths of optical radiation on selected optical paths between said light source and said light target. The reflection module may be a multiplexer or a laser cavity. As a laser, it may include as a source semiconductor laser (12) comprising a laser source disposed to direct radiation through a first multiple layer dielectric Fabry-Perot cavity with the center of curvature between the source and a fiber tip to which output energy is to be coupled, and a second reflector (18) mounted behind the first reflector (16), the second reflector (18) being a full reflector with the center of curvature at the laser source. The first reflector (16) may have a narrow-band optical transmissivity characteristic intended to permit only a narrow band of optical radiation to be coupled to the full reflector (18) disposed as a confocal reflective surface of the laser cavity. Reflections from the first reflector (16) are coupled to a tip of an optical fiber (14).

公开(公告)号：WO1993002373A1

公开(公告)日：1993-02-04

申请号：PCT/US1992006015

申请日：1992-07-20

Applicant: KAPTRON, INC. ,  KAPANY, Narinder, S. ,  UNTERLEITNER, Fred, C. ,  CHIA, Shin-Lo

Inventor： KAPTRON, INC.

IPC: G02B06/26

CPC classification number: G02B6/2746 ,  G02B6/4209 ,  G02F1/093 ,  G02F2203/06 ,  H01S3/06754

Abstract: A fiber optic isolator (40) uses only one-half the amount of costly rotator material as the prior art and an isolated laser amplifier uses only one-quarter the amount of costly rotator material. An embodiment of a fiber optic isolator (40) includes a concave reflector (55) and a fiber holder defining first and second fiber ports (42, 43) that register the respective ends of first and second fibers. A polarizer (50) is located between the first port and the reflector, an analyser (52) is located between the second port and the reflector (55), and a Faraday rotator (53) is disposed between the polarizer (50) and analyzer (52) on one side and the reflector (55) on the other side. The polarizer (50) and analyzer (52) have their polarization axes at a relative angle of 45° while the rotator is configured to provide a 22.5° rotation. The port locations, the reflector (55), the polarizer, and the analyzer are configured so that light diverging from the end of the first fiber and entering the first port passes through the system and is imaged at the end of the second fiber, at least for one polarization component. At the same time, light that enters the second port is prevented from leaving the first port, regardless of the polarization mode.