Trimedyne, Inc.

Owlink Technology, Inc.

Other

Randall J Blair

Xiaolin Tong

Shing-Wu P Tzeng

Sanford Damasco

Samuel M Shaolian

Marvin P Loeb

Hung H Cao

Jeffrey J Giba

Vahid Saadat

Hua Zhang

Paul Tzeng

Tom Lillig

Gerry D Rey

Todd Hu

A grating assisted optical waveguide for use in free space optical detection is disclosed. High speed, high sensitivity, large field of view, and relaxed tolerance on alignment are enabled. The grating converts a free space incoming optical beam into guided mode. Converted optical signals propagate along the waveguide, and can be directed to an optical detector. As such, the optical intensity at the active area of the detector is increased significantly. A number of optical beam converter gratings for free space light collection can be used, including linear and ring structure gratings, chirped gratings, and multilayer gratings. Such a grating assisted optical waveguide can be used, for example, in a digital wireless multimedia system, where digital content is wirelessly transmitted from a source to a target destination, such as home-based video and audio entertainment systems.

High speed free space optical detection with grating assisted waveguide

Embodiments provide single fiber bidirectional HDCP modules. A signal fiber module includes at least one laser and at least one detector and a waveguide combiner/splitter. An optical fiber is used as a cylindrical lens in order to partially collimate in the vertical axis the optical signals entering and leaving branches of a waveguide. The branches of the waveguide have lens-shape interfaces in order to at least partially collimate in the horizontal axis the beams entering and leaving the waveguide. Each branch of the waveguide tapers toward a join-section of the waveguide. At the join section, the cross-section of a laser branch is smaller than the cross-section of a detector branch. If more than one detector is present in a module, the cross-sections of the detector branches differ from each other. If more than one laser is present in a module, the cross-sections of the laser branches differ from each other.

Bidirectional HDCP module using single optical fiber and waveguide combiner/splitter

A MEMS-based optical, wireless communication system () that is comprised of a receiving and transmitting optical unit () that is further comprised of a transmitting subsystem () and a receiving subsystem (), both of which are controlled by a microcontroller () and firmware (). The system () is designed to allow a first unit () to transmit through free space a modulated laser beam () that is received by a second unit () located within line-of-sight of the first unit (). Conversely, the second unit () can likewise transmit a modulated laser beam () that is received by the first unit () or other line-of-sight units (). The system () features a MEMS mirror assembly () that operates in combination with a quad sensor (). The combination allows fast, precise tracking and compensates for atmospheric disturbances associated with optical communication namely, building sway, wind and scintillations caused by changes in the refraction index of the atmosphere.

MEMS-based optical wireless communication system

A variable pulse width lasing device for selectively reducing the amount of laser energy provided during a surgical procedure is described. The device includes a central processing unit, a laser resonator, pulse width detector and a pulse modulator. The central processing unit provides a switch activation command to the modulator. The modulator also receives a laser pulse produced by the laser resonator which has an initial pulse width and a wavelength which is compatible for transmission through an optical fiber. The modulator varies the width of the laser pulse for providing an output pulse at a selected pulse width and energy level.

Variable pulse width lasing device

Therapeutic appliance releasing device

A split-flow laser cooling assembly for providing separate cooling environments for the pumping medium and the laser medium. The device includes a generally transparent monoblock, a pumping medium for providing pump light, and a laser medium responsive to the pump light for generating laser energy. The monoblock is generally transparent and has a first open bore and a second open bore oriented with axis' parallel to each other. The first bore receives the pumping medium such that a pump cooling passage is provided between the monoblock and the pumping medium. Likewise, the second bore receives the laser medium such that a laser cooling passage is provided between the laser medium and the monoblock.

Split-flow laser cooling cavity

Growing community of inventors

Oceanside, CA, United States of America

Randall J Blair