International Business Machines Corporation

Jds Uniphase Corporation

Other

Christopher M Gabel

Roger T Lindquist

Brian Michael Kerrigan

Gerald Daniel Malagrino, Jr

Johnny Roy Brezina

David Peter Gaio

William K Hogan

James Robert Moon

Philip Deane

Marian C Hargis

James Walling

Miles Frank Swain

Sundeep Nand Nangalia

Benjamin Michael Kreuz

Sundeep NandNangalia

The invention relates to an optical sub-assembly package for use in receiver optical sub-assemblies or transmitter optical sub-assemblies in which the electrical connections between the transducer chip, e.g. photo-detector or light source, and the device printed circuit board is made by a single flexible circuit conductor extending through the wall of the package. The package is comprised of a housing and a stiffening plate, which encloses and end of the housing and forms a mechanical support for an end of the flexible circuit conductor.

Compact optical sub-assembly with integrated flexible circuit

The present invention provides a fiber optic lens assembly and method of mounting a lens array in the same. The fiber optic lens assembly includes a housing including a lens mounting aperture formed therein. The housing includes at least one feature adjacent the lens mounting aperture. A lens array is positioned within the lens mounting aperture and adjacent the feature. At least one biasing member is positioned adjacent the lens array. The biasing member forces the lens array against the feature. The method includes positioning the lens array adjacent at least one feature formed in a lens mounting aperture of a housing. At least one biasing member is inserted in the lens mounting aperture adjacent the lens array. A cornering force is applied against the lens array with the biasing member.

Mounting a lens array in a fiber optic transceiver

An optical transceiver is controlled through the use of a monitor optical signal generator and monitor optical signal detector mounted in close physical proximity to the optical signal generator and detector of the transceiver in a housing having a reflective surface. The monitor optical signal generator transmits a reference optical signal that is reflected and directed to the monitor optical signal detector by the reflective surface of the housing. Changes in the reference optical signal detected at the monitor optical signal detector are used for controlling the optical signal generator of the transceiver.

Apparatus and method for controlling an optical transceiver

The invention relates to a receiver optical sub-assembly (ROSA) for use in a high-speed small-form factor transceiver. The ROSA, according to the present invention, includes a stacked chip design in which a semiconductor micro-bench, upon which the photodiode and trans-impedance amplifier are mounted, is disposed perpendicular to the direction that the light travels. A flexible electrical connector is attached to the semiconductor micro-bench for electrically connecting the ROSA to a host a transceiver device. The flexible electrical connector is fixed to the surface of the semiconductor micro-bench with portions cut-out to receive the amplifier and other electrical components extending therefrom. To facilitate assembly, wells are etched from the semiconductor micro-bench corresponding to bumps extending from a mounting flange for the optical coupler.

Receiver optical sub-assembly

The present invention provides methods for aligning a fiber optic cable with an optical component on a device carrier using a fiber optic lens assembly. One method provides that movement of the lens assembly is fixed with respect to the fiber optic cable. Light is sent through the lens assembly. The fixed lens assembly and fiber optic cable are moved with respect to the device carrier. The light sent though the fixed lens assembly is monitored, and movement of the fixed lens assembly is fixed with respect to the device carrier according to the monitored light. Another method provides that movement of the lens assembly is fixed with respect to the device carrier. Light is sent through the lens assembly. The fixed lens assembly and device carrier are moved with respect to the fiber optic cable. The light sent though the fixed lens assembly is monitored, and movement of the fixed lens assembly is fixed with respect to the fiber optic cable according to the monitored light. The present invention further provides aligned transceiver assemblies having a fiber optic cable, device carrier, and fiber optic lens assembly having features that facilitate alignment and fixing according to the invention methods.

Optical alignment in a fiber optic transceiver

Growing community of inventors

Rochester, MN, United States of America

Christopher M Gabel