Title:
LASER MODULE WITH OPTICAL ISOLATOR
Document Type and Number:
Japanese Patent JPS6177028
Kind Code:
A
Abstract:
PURPOSE: To improve the optical coupling efficiency and the temperature characteristic by correcting the shift quantity of an optical isolator.
CONSTITUTION: The first polarizing prism 3 is arranged on a slope in the side of a semiconductor laser 1 of a parallelepiped Farady rotator 2 which has slopes with respect to the optical axis, and the second polarizing prism 4 whose optical axis is inclined at 45° to that of the first polarizing prism 3 is arranged on a slope in the side of an optical fiber 7 through a half wavelength plate 11, thus forming an optical isolator. A compensating plate 10 which corrects the shift quantity of the optical isolator is arranged in the exit face side of the second polarizing prism.
Inventors:
CHIKAMA TERUMI
ONODA YOSHITO
GOTO MASAMI
ONODA YOSHITO
GOTO MASAMI
Application Number:
JP19883684A
Publication Date:
April 19, 1986
Filing Date:
September 21, 1984
Export Citation:
Assignee:
FUJITSU LTD
International Classes:
G02B6/42; G02B27/28; H01S5/00; (IPC1-7): G02B6/42; G02B27/28; H01S3/18
Attorney, Agent or Firm:
Koshiro Matsuoka