Back to results
US 7,254,301 B2Granted
Optical module
AssigneeHamamatsu Photonics K.K.
InventorsYasuji Hoshino, Takashi Iida, Yoshihisa Warashina, Kei Tabata
Life of this patent
Estimating the term…
Abstract
An optical module comprises: a sub-mount 1, having four photodiodes 12 and two guide grooves 10 disposed on an optical element mounting surface 16; a fiber fixing member 2, having four V-grooves 21, four concave mirrors 22, and two guide rails 20 disposed on an optical fiber fixing surface 26; and four optical fibers 3, fixed to the fiber fixing member 2. With this optical module, the sub-mount 1 and fiber fixing member 2 are aligned and fixed by the fitting together of the guide grooves 10 and guide rails 20. A passive alignment type optical module that enables mass production and cost reduction is thus realized.
Claims21
An optical module comprising:
- a sub-mount, having an optical semiconductor element, which is disposed on a predetermined first surface, and a first alignment portion, which is formed on the first surface;
- a fiber fixing member, having a fixing groove, which is formed on a predetermined second surface and is for aligning and fixing an optical fiber, a concave mirror, which is disposed with respect to the fixing groove and guides light emitted from one of either the optical fiber that is fixed to the fixing groove and the corresponding optical semiconductor element to the other, and a second alignment portion, which is formed on the second surface;
- and
- the optical fiber, fixed to the fixing groove;
- and
- wherein of the first alignment portion and the second alignment portion, one of either comprises a guide rail and the other comprises a guide groove that fit with the guide rail, and
- the sub-mount and the fiber fixing member are aligned and fixed by fitting together of the first alignment portion and second alignment portion,
- wherein the optical semiconductor element is prepared from the same material and by the same semiconductor process as the sub-mount and thereby formed to be monolithic with the first alignment portion.
5 more elements
An optical module comprising:
- a sub-mount, having an optical semiconductor element, which is disposed on a predetermined first surface, and a first alignment portion, which is formed on the first surface;
- a fiber fixing member, having a fixing groove, which is formed on a predetermined second surface and is for aligning and fixing an optical fiber, a concave mirror, which is disposed with respect to the fixing groove and guides light emitted from one of either the optical fiber that is fixed to the fixing groove and the corresponding optical semiconductor element to the other, and a second alignment portion, which is formed on the second surface;
- and
- the optical fiber, fixed to the fixing groove;
- and
- wherein of the first alignment portion and the second alignment portion, one of either comprises a guide rail and the other comprises a guide groove that fit with the guide rail, and
- the sub-mount and the fiber fixing member are aligned and fixed by fitting together of the first alignment portion and second alignment portion,
- wherein the sub-mount has an aligning mark formed by the same mask process as the first alignment portion and the optical semiconductor element is disposed by being aligned with respect to the sub-mount using the aligning mark as a reference.
5 more elements
An optical module comprising:
- a sub-mount, having an optical semiconductor element, which is disposed on a predetermined first surface, and a first alignment portion, which is formed on the first surface;
- a fiber fixing member, having a fixing groove, which is formed on a predetermined second surface and is for aligning and fixing an optical fiber, a concave mirror, which is disposed with respect to the fixing groove and guides light emitted from one of either the optical fiber that is fixed to the fixing groove and the corresponding optical semiconductor element to the other, and a second alignment portion, which is formed on the second surface;
- and
- the optical fiber, fixed to the fixing groove;
- and
- wherein of the first alignment portion and the second alignment portion, one of either comprises a guide rail and the other comprises a guide groove that fit with the guide rail, and
- the sub-mount and the fiber fixing member are aligned and fixed by fitting together of the first alignment portion and second alignment portion,
- further comprising a lens, which is disposed between the optical semiconductor element and concave mirror and converge the light emitted from one of either the optical fiber and the corresponding optical semiconductor element to the other.
5 more elements
Dependencies are inferred from the claim text.