Title:
OPTICAL INTEGRATED ELEMENT AND OPTICAL TRANSMITTER MODULE
Document Type and Number:
WIPO Patent Application WO/2018/117077
Kind Code:
A1
Abstract:
An optical integrated element is provided with: a passive waveguide region in which a second core layer, a lower cladding layer, a first core layer, and an upper cladding layer are successively stacked on a substrate; and an active region in which a second core layer, a lower cladding layer, a first core layer, a quantum well layer which amplifies light by being injected with electric current, and an upper cladding layer are successively stacked on a substrate. The first core layer and the quantum well layer are proximate to each other in the range of a mode field of light being guided in the first core layer. At least a part of the passive waveguide region and the active region have a first mesa structure in which the upper cladding layer protrudes in a mesa shape. The passive waveguide region includes, in addition to the first mesa structure, a second spot-size conversion region having a second mesa structure in which the first core layer, the lower cladding layer, and the second core layer protrude in a mesa shape. The second mesa structure has a width greater than a width of the first mesa structure. In the passive waveguide region having the second mesa structure, the width of the first mesa structure is continuously varied.
Inventors:
SAITO YUSUKE (JP)
KUROBE TATSURO (JP)
KIMOTO TATSUYA (JP)
KAMIYA SHINICHI (JP)
KUROBE TATSURO (JP)
KIMOTO TATSUYA (JP)
KAMIYA SHINICHI (JP)
Application Number:
PCT/JP2017/045459
Publication Date:
June 28, 2018
Filing Date:
December 19, 2017
Export Citation:
Assignee:
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
H01S5/026; G02B6/122
Foreign References:
| JPH07120795A | 1995-05-12 | |||
| JP2016126216A | 2016-07-11 | |||
| JPH05243679A | 1993-09-21 | |||
| US6310995B1 | 2001-10-30 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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