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1. (WO2018088537) OPTICAL AXIS ADJUSTMENT METHOD, MANUFACTURING METHOD AND OPTICAL AXIS ADJUSTMENT DEVICE FOR INTEGRATED OPTICAL MODULE

Pub. No.:    WO/2018/088537    International Application No.:    PCT/JP2017/040633
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Sat Nov 11 00:59:59 CET 2017
IPC: G02B 6/293
G02B 6/42
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: KOYAMA, Daichi
神山 大知
KODERA, Hidekazu
小寺 秀和
SATO, Yoshiya
佐藤 義也
HATA, Tadayoshi
畑 端佳
SHIMONO, Masaya
下野 真也
Title: OPTICAL AXIS ADJUSTMENT METHOD, MANUFACTURING METHOD AND OPTICAL AXIS ADJUSTMENT DEVICE FOR INTEGRATED OPTICAL MODULE
Abstract:
An optical axis adjustment method for an integrated optical module includes: a measurement step for measuring output current by changing the wavelength of incident light introduced into a package and detecting light split by first and second filters respectively by first and second light receiving elements; a detection step for detecting first and second light center wavelengths from output current changes for the changes in the wavelength of the incident light; a step for comparing the center wavelength of the first and second light and design transmitted wavelengths for the first and second filters and making the difference therein first and second wavelength shifts; and an adjustment step for adjusting the position of a light splitter such that the sum of the first and second wavelength shifts is small.