JPS57185011A - Optional wavelength output type fiber optics - Google Patents

Optional wavelength output type fiber optics

Info

Publication number
JPS57185011A
JPS57185011A JP6929181A JP6929181A JPS57185011A JP S57185011 A JPS57185011 A JP S57185011A JP 6929181 A JP6929181 A JP 6929181A JP 6929181 A JP6929181 A JP 6929181A JP S57185011 A JPS57185011 A JP S57185011A
Authority
JP
Japan
Prior art keywords
lambda2
lambda1
optical
function
fiber optics
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.)
Granted
Application number
JP6929181A
Other languages
Japanese (ja)
Other versions
JPS6338683B2 (en
Inventor
Kazuyuki Asanuma
Hideki Noda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP6929181A priority Critical patent/JPS57185011A/en
Publication of JPS57185011A publication Critical patent/JPS57185011A/en
Publication of JPS6338683B2 publication Critical patent/JPS6338683B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
    • G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
    • G02B6/29346—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating by wave or beam interference
    • G02B6/29361—Interference filters, e.g. multilayer coatings, thin film filters, dichroic splitters or mirrors based on multilayers, WDM filters
    • G02B6/29362—Serial cascade of filters or filtering operations, e.g. for a large number of channels

Abstract

PURPOSE:To miniaturize the scale of constitution and to simplify the circuit constitution of the entire optical transmission system, by using a single circuit element having both optical branching function and optical switching function. CONSTITUTION:A fiber optics 1 has a structure in which an optical signal converting element 4 is provided into an optical path between the optical signal input and output parts 2 and 3. The element 4 has both the optical branching function to branch the multiplexed signals lambda1 and lambda2 into lambda1 and lambda2 and a function to change the optical paths of lambda1 and lambda2 in accordance with the switching signal S. In other words, two optical branching filters 5 and 6 are combined with 90 deg. angle to each other for the element 4. Accordingly, the filter 5 reflects lambda1 and transmits lambda2 and vice versa with the filter 6. Thus the signals lambda1 and lambda2 can be branched into lambda1 and lambda2.
JP6929181A 1981-05-11 1981-05-11 Optional wavelength output type fiber optics Granted JPS57185011A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6929181A JPS57185011A (en) 1981-05-11 1981-05-11 Optional wavelength output type fiber optics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6929181A JPS57185011A (en) 1981-05-11 1981-05-11 Optional wavelength output type fiber optics

Publications (2)

Publication Number Publication Date
JPS57185011A true JPS57185011A (en) 1982-11-15
JPS6338683B2 JPS6338683B2 (en) 1988-08-01

Family

ID=13398332

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6929181A Granted JPS57185011A (en) 1981-05-11 1981-05-11 Optional wavelength output type fiber optics

Country Status (1)

Country Link
JP (1) JPS57185011A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5535366A (en) * 1978-09-06 1980-03-12 Nippon Telegr & Teleph Corp <Ntt> Photo switch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5535366A (en) * 1978-09-06 1980-03-12 Nippon Telegr & Teleph Corp <Ntt> Photo switch

Also Published As

Publication number Publication date
JPS6338683B2 (en) 1988-08-01

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