Seagate Technology Incorporated

Capella Photonics, Inc.

Michael J Darling

Mark H Garrett

Joseph Eugene Davis

Iraj Jabbari

Brian Tremaine

Raymond Chin

Brian L Phillips

Ira J Jabbari

Julieta M Suba

A wavelength selective switch architecture for ROADMs for switching the spectral channels of a multi-channel, multi-wavelength optical signal between input and output ports employs a biaxial MEMS port mirror array for optimal coupling efficiency and ITU grid alignment, an anamorphic beam expander for expanding input optical signals to create an elongated beam profile, a diffraction grating for spatially separating the spectral channels, an anamorphic focusing lens system, an array of biaxial elongated channel MEMS micromirrors, a built-in Optical Channel Monitor, and an electronic feedback control system. The bi-axial channel micromirrors are rotatable about one axis to switch spectral channels between ports, and are rotatable about an orthogonal axis to vary the coupling of the spectral channel to an output port and control attenuation of the spectral signal for complete blocking or for a predetermined power level. The architecture affords hitless switching, near notchless operation, ITU channel alignment, high passband, stability over a broad temperature range, and minimum insertion loss through the optimal optical coupling efficiency enabled by the feedback control system.

Optimized reconfigurable optical add-drop multiplexer architecture with MEMS-based attenuation or power management

The present invention comprises a body for accommodating and optical fiber in a disk drive.

Variable length self-retaining optical fiber spool

A low profile fixed shaft disc drive motor with separate disc mounting and motor sections. The motor is ball staked to a cup shaped piece of sheet metal, which is in turn screwed onto the casing of the disc drive. The motor shaft has an integral lamination mounting flange. The hub has a lower, cup shaped magnet section which has a feature for mounting the discs which is the same length as a disc spacer.

Disc drive spindle motor

Apparatus of the disclosure for securing a printed circuit cable to the actuator arm in a disc drive described. The apparatus is designed to effectuate bias minimization and bias consistency during repeated operation of the disc head assembly. Additionally, the printed circuit cable is attached without using adhesive.

Growing community of inventors

Santa Cruz County, CA, United States of America

Michael J Darling