JPS6437507A - Waveguide type optical interferometer circuit - Google Patents

Waveguide type optical interferometer circuit

Info

Publication number
JPS6437507A
JPS6437507A JP19423487A JP19423487A JPS6437507A JP S6437507 A JPS6437507 A JP S6437507A JP 19423487 A JP19423487 A JP 19423487A JP 19423487 A JP19423487 A JP 19423487A JP S6437507 A JPS6437507 A JP S6437507A
Authority
JP
Japan
Prior art keywords
optical
coupling
waveguides
waveguide
length
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
JP19423487A
Other languages
Japanese (ja)
Inventor
Masao Kawachi
Norio Takato
Kaname Jinguji
Akira Himeno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP19423487A priority Critical patent/JPS6437507A/en
Publication of JPS6437507A publication Critical patent/JPS6437507A/en
Pending legal-status Critical Current

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  • Optical Integrated Circuits (AREA)
  • Photometry And Measurement Of Optical Pulse Characteristics (AREA)

Abstract

PURPOSE:To obtain a circuit which has a superior quenching ratio and small excessive loss by using a directional coupler of what is called (3X3) constitution which have coupling optical waveguides arranged nearby both ends of input/ output optical waveguides as an optical coupler. CONSTITUTION:The coupling optical waveguides 2a and 2b are arranged closely about an input/output optical waveguide 3a to specific length (l). The coupling waveguides 2a and 2b in the optical coupling part 22 of length (l) are arranged symmetrically about the center axis 23 of the optical waveguide 3a. When signal light which is guided in the optical waveguide 3a reaches the optical coupling part 22, evanescent coupling from the center optical waveguide to both-side optical waveguides is generated and when the length (l) is set properly (complete coupling length), the signal light of the center optical waveguide all travels to both-side optical waveguides before reaching the exit of the optical coupling part 22, thereby performing desired optical coupler operation. Consequently, the waveguide type optical interferometer circuit whose loss characteristics and quenching characteristics are both excellent is obtained.
JP19423487A 1987-08-03 1987-08-03 Waveguide type optical interferometer circuit Pending JPS6437507A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19423487A JPS6437507A (en) 1987-08-03 1987-08-03 Waveguide type optical interferometer circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19423487A JPS6437507A (en) 1987-08-03 1987-08-03 Waveguide type optical interferometer circuit

Publications (1)

Publication Number Publication Date
JPS6437507A true JPS6437507A (en) 1989-02-08

Family

ID=16321201

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19423487A Pending JPS6437507A (en) 1987-08-03 1987-08-03 Waveguide type optical interferometer circuit

Country Status (1)

Country Link
JP (1) JPS6437507A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0339905A (en) * 1989-07-07 1991-02-20 Nippon Telegr & Teleph Corp <Ntt> Waveguide type optical branching element
JPH03213829A (en) * 1989-02-07 1991-09-19 Nippon Telegr & Teleph Corp <Ntt> Waveguide type optical branching element operating at wide-wavelength-range
US7085446B2 (en) 2002-04-19 2006-08-01 Sumitomo Electric Industries, Ltd. Optical multi/demultiplexer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03213829A (en) * 1989-02-07 1991-09-19 Nippon Telegr & Teleph Corp <Ntt> Waveguide type optical branching element operating at wide-wavelength-range
JPH0339905A (en) * 1989-07-07 1991-02-20 Nippon Telegr & Teleph Corp <Ntt> Waveguide type optical branching element
US7085446B2 (en) 2002-04-19 2006-08-01 Sumitomo Electric Industries, Ltd. Optical multi/demultiplexer

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