Lumentum Operations LLC

Western Digital Technologies, Inc.

Huijie Xu

Jay A Skidmore

Prasad Yalamanchili

Gregory G Foisy

Raman Srinivasan

Nicolas Guerin

Yonghong Guo

Xia Hong

Yaogeng Ding

John Martinho

Lihua Wang

Frank Wu

A fiber attachment structure may comprise a monolithic platform structure having a first trench and a second trench to segment the monolithic platform structure into a chip mount area, a first island, and a second island. A laser chip may be mounted directly on the chip mount area and an optical fiber may be mounted on the first island by a first adhesive joint and on the second island by a second adhesive joint. For example, in some implementations, the first adhesive joint may include a first quantity of adhesive material attaching the optical fiber to the first island at a position at which a tip of the optical fiber is aligned with an output facet of the laser chip, and the second adhesive joint may include a second quantity of the adhesive material to mechanically secure the optical fiber to the second island.

Structure for fiber attachment with adhesive material

A pump laser package may include an input fiber to send signal light on a first optical path. A first lens may be arranged on the first optical path. The pump laser package may include a source to send pump light on a second optical path. A second lens and a negative lens may be arranged on the second optical path. The first lens and the negative lens may be arranged to create a virtual image associated with the pump light. The pump laser package may include an output fiber on a third optical path. The first lens may be arranged on the third optical path. The pump laser package may include a combiner to receive the signal light on the first optical path, receive the pump light on the second optical path, and send the signal light and the pump light on the third optical path.

Fiber coupled laser source pump with wavelength division multiplexer

A novel head stack assembly (HSA) is disclosed and claimed. The HSA includes first and second actuator arms. A first head gimbal assembly is attached to the first actuator arm. The first head gimbal assembly includes a read head. A dummy mass is attached to the second actuator arm. The dummy mass includes a mounting plate portion defining a mounting plate width, a neck portion defining a neck width and a neck length, and a distal mass portion defining a distal mass width and a distal mass length. The neck width is less than the mounting plate width and the neck width is less than the distal mass width.

Depopulated head stack assembly having a necked dummy mass

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Milpitas, CA, United States of America

Huijie Xu