公开(公告)号：US3619066A

公开(公告)日：1971-11-09

申请号：US3619066D

申请日：1969-03-07

Applicant: BELL TELEPHONE LABOR INC

Inventor： KAISER PETER ,  MARCATILI ENRIQUE A J

IPC: G01J1/42 ,  H01P3/20 ,  G02B5/14

CPC classification number: G01J1/4257 ,  H01P3/20

Abstract: Beam position and beam width sensing is accomplished by scattering a small percentage (0.1 percent) of the beam energy. The scattered light is analyzed by an arrangement of three photosensors that compare the energy distribution along different portions of the beam and produce appropriate error signals which are then used to reposition and focus the beam. Scattering is accomplished by means of thin threads disposed across the wavepath.

公开(公告)号：US3610725A

公开(公告)日：1971-10-05

申请号：US3610725D

申请日：1970-02-26

Applicant: BELL TELEPHONE LABOR INC

Inventor： KAISER PETER

IPC: G02B3/12 ,  G02B5/14

CPC classification number: G02B3/12

Abstract: In an optical waveguiding system using thermal gas lenses, realignment of an undulating optical beam with the optical axis of the guide is achieved by bending the lenses along two mutually perpendicular directions. Bending can be done manually or automatically using, for example, slow speed motors activated by beam position sensors.

公开(公告)号：US3598472A

公开(公告)日：1971-08-10

申请号：US3598472D

申请日：1969-12-05

Applicant: BELL TELEPHONE LABOR INC

Inventor： KAISER PETER

IPC: G02B3/12

CPC classification number: G02B3/12

Abstract: In the optical guiding apparatus disclosed, counterflow gas lenses are provided with improved focusing properties by providing radial exhaust of the hot gases before they cool significantly. Substantial radial symmetry of the exhaust provides stable stagnation regions at the junctures of the counter flows. A relatively long conduit section is employed to develop laminar flow of the inlet gas and to permit relatively high gas velocities that make gravity aberrations negligible. To further reduce gravity aberrations, the exhaust ends of the lens halves may be lifted with respect to the inlet ends of the lens halves.

公开(公告)号：US3519332A

公开(公告)日：1970-07-07

申请号：US3519332D

申请日：1968-02-07

Applicant: BELL TELEPHONE LABOR INC

Inventor： KAISER PETER

IPC: G02B3/14 ,  G02B1/06

CPC classification number: G02B3/14

公开(公告)号：US3558891A

公开(公告)日：1971-01-26

申请号：US3558891D

申请日：1968-01-12

Applicant: BELL TELEPHONE LABOR INC

Inventor： KAISER PETER

IPC: G02B3/12 ,  H04B9/00

CPC classification number: G02B3/12

Abstract: In an optical guiding apparatus employing a gas, substantially continuous focusing action is provided by producing a velocity of the gas that generates heating by viscous shear work. The resulting transverse variation of temperature and of refractive index enables the gas to provide converging focusing action. The inlet velocity of the gas preferably lies in a range between about 0.04 and 0.08 times the speed of sound; and the plurality of gas introducing means and gas exhausting means are operated at absolute pressures substantially above atmospheric pressure in order to provide focusing in a substantial length of conduit while maintaining the gas exhaust velocity below the speed of sound. Porous sections of conduit are illustratively used for introducing and exhausting the gas in a radially symmetrical fashion.