JPS6452120A - Optical branching device - Google Patents

Optical branching device

Info

Publication number
JPS6452120A
JPS6452120A JP20827287A JP20827287A JPS6452120A JP S6452120 A JPS6452120 A JP S6452120A JP 20827287 A JP20827287 A JP 20827287A JP 20827287 A JP20827287 A JP 20827287A JP S6452120 A JPS6452120 A JP S6452120A
Authority
JP
Japan
Prior art keywords
polarized light
light beams
linear polarized
incident
polarizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP20827287A
Other languages
Japanese (ja)
Inventor
Yoshinori Yamazaki
Hidehiko Noguchi
Original Assignee
Anritsu Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anritsu Corp filed Critical Anritsu Corp
Priority to JP20827287A priority Critical patent/JPS6452120A/en
Publication of JPS6452120A publication Critical patent/JPS6452120A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To branch projection light accurately in 1:1 proportion by polarizing incident light by a polarizing element into two linear polarized light beams, converting them by a lambda/4 wavelength plate into circular polarized light beams, and then dividing them equally by a branching means. CONSTITUTION:Light A is made incident on the polarizing element 1 of a birefringent crystal body to obtain the mutually orthogonal linear polarized light beams B1 and C1. The power ratio of those linear polarized light beams B1 and C1 depends upon the polarization state of the incident light A. Then the lambda/4 wavelength plate 2 converts them into circular polarized light beams B2 and C2. The power ratio of those circular polarized light beams B2 and C2 is also held equal to the power ratio of the linear polarized light beams B1 and C1 and they are made incident on the branching means 3 as a beam splitter. Here, they are branched into linear polarized light components in two mutually orthogonal directions so that the circular polarized light beam B2 is branched into orthogonal linear polarized light beams D and G and the circular polarized light C2 is branched into orthogonal linear polarized light beams E and F. The ratio of the linear polarized light beams D and G and the ratio of the linear polarized light beams E and F are 1:1. Therefore, the incident light A is transmitted through the polarizing element and lambda/4 wavelength plate, so a light output H is branched in 1:1 proportion.
JP20827287A 1987-08-24 1987-08-24 Optical branching device Pending JPS6452120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20827287A JPS6452120A (en) 1987-08-24 1987-08-24 Optical branching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20827287A JPS6452120A (en) 1987-08-24 1987-08-24 Optical branching device

Publications (1)

Publication Number Publication Date
JPS6452120A true JPS6452120A (en) 1989-02-28

Family

ID=16553494

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20827287A Pending JPS6452120A (en) 1987-08-24 1987-08-24 Optical branching device

Country Status (1)

Country Link
JP (1) JPS6452120A (en)

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