JPS5851247B2 - Optical wavelength selective coupling device - Google Patents
Optical wavelength selective coupling deviceInfo
- Publication number
- JPS5851247B2 JPS5851247B2 JP54070279A JP7027979A JPS5851247B2 JP S5851247 B2 JPS5851247 B2 JP S5851247B2 JP 54070279 A JP54070279 A JP 54070279A JP 7027979 A JP7027979 A JP 7027979A JP S5851247 B2 JPS5851247 B2 JP S5851247B2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- coupling
- periodic structure
- wavelength
- optical waveguides
- 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.)
- Expired
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
- G02B6/29304—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 diffraction, e.g. grating
- G02B6/29316—Light guides comprising a diffractive element, e.g. grating in or on the light guide such that diffracted light is confined in the light guide
- G02B6/29317—Light guides of the optical fibre type
- G02B6/29319—With a cascade of diffractive elements or of diffraction operations
-
- 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
- G02B6/29331—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 evanescent wave coupling
- G02B6/29332—Wavelength selective couplers, i.e. based on evanescent coupling between light guides, e.g. fused fibre couplers with transverse coupling between fibres having different propagation constant wavelength dependency
- G02B6/29334—Grating-assisted evanescent light guide couplers, i.e. comprising grating at or functionally associated with the coupling region between the light guides, e.g. with a grating positioned where light fields overlap in the coupler
Description
【発明の詳細な説明】
本発明は光分波乃至合波機能、波長多重化機能、光分岐
乃至挿入機能等が得られる様になされた光波長選択結合
装置に関し、特に低損失、高密度な斯種光波長選択結合
装置を得んとするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an optical wavelength selective coupling device capable of providing optical demultiplexing or multiplexing functions, wavelength multiplexing functions, optical branching or adding functions, etc. The present invention aims to obtain such an optical wavelength selective coupling device.
以下図面を伴なって本発明を詳述するに、第１図は本発
明の第１の実施例を示し、１つの光導波路ＬＯ（但し図
に於てはそれが符号１で示されているコアを以って示さ
れている。The present invention will be described in detail with reference to the drawings. FIG. 1 shows a first embodiment of the present invention, in which one optical waveguide LO (in the figure, it is designated by 1) is shown. The core is shown here.
）と、光導波路ＬＯにその長さ方向に位置をずらして夫
々複数Ｎ個（但し図に於ては３個）の結合部ＣＩ、Ｃ２
・・・ＣＮを介して近接して配された複数Ｎ個の光導波
路Ｌ１．Ｌ２・・・・・・ＬＮとを以って結合導波路系
が構成されてなる構成に於て、光導波路ＬＤ及びＬｌ。), and a plurality of N (however, three in the figure) coupling portions CI, C2, which are shifted in the length direction of the optical waveguide LO.
. . . A plurality of N optical waveguides L1. In a configuration in which a coupling waveguide system is formed by L2...LN, the optical waveguides LD and Ll.
ＬＯ及びＬ２．・・・・・・・・・ＬＯ及びＬＮ間にて
夫々互に異なる複数の波長λ１．λ２・・・・・・・・
・λＮに対して夫々逆方向性結合が得られるべく結合部
ＣＩ、Ｃ２・・・・・・・・・ＣＮに複数Ｎ個の周期性
構造Ｆ１．Ｆ２゜・・・ｒ・・・・・ＦＮが形成されて
なる構成を有する。LO and L2. . . . A plurality of mutually different wavelengths λ1. between LO and LN. λ2・・・・・・・・・
- A plurality of N periodic structures F1 . F2°...r...FN is formed.
尚この場合の逆方向性結合は、光導波路ＬＯ及びＬｉ（
ｉ＝１，２・・・・・・・・・Ｎ）を伝播する導波モー
トの位相定数を互に異なるβ。Note that the reverse directional coupling in this case is the optical waveguide LO and Li(
i=1, 2...N), the phase constants of the waveguide motes that propagate are different β.
及びβ１１周期性構造Ｆｉの周期を、／ｆｉとするとき
、
なる関係が満足されるべく周期性構造Ｆｉの周期Ａｉが
選定されているものである。When the period of the periodic structure Fi is /fi, the period Ai of the periodic structure Fi is selected so that the following relationship is satisfied.
但しく１）式に於てＫは整数で、通常１をとる。However, in formula 1), K is an integer, usually 1.
又周期性構造Ｆｉはそれ自体は公知であるが所謂凹凸グ
レーディングを施すことにより得られているものである
。Although the periodic structure Fi is known per se, it is obtained by applying so-called uneven grading.
以上が本発明の第１の実施例の構成であるが、斯る構成
によれば、周期性構造Ｆｉの長さＬｉ（μｍ）に対する
光導波路ＬＯ及びＬｉ間の逆方向性結合の結合率ηｉの
関係と、長さＬｉと周期性構造Ｆｉの周期結合の強さＱ
ｉ（周期性構造Ｆｉの単位長当りの結合度）との積Ｑｉ
、Ｌｉに対する結合ηｉの関係とが、
で与えられるｌと周期結合の強さＱｉとの比Ａ／Ｑｉを
パラメータとして且光導波路ＬＯ及びＬｉのモード伝播
損失α。The above is the configuration of the first embodiment of the present invention. According to this configuration, the coupling rate ηi of the reverse directional coupling between the optical waveguide LO and Li with respect to the length Li (μm) of the periodic structure Fi The relationship between the length Li and the periodic bond strength Q of the periodic structure Fi
Product Qi with i (degree of coupling per unit length of periodic structure Fi)
, the relationship of the coupling ηi to Li, with the ratio A/Qi between l and the periodic coupling strength Qi given by as a parameter, and the mode propagation loss α of the optical waveguide LO and Li.
及びαｉの夫々とＱｉとの比（αｏ／Ｑｔ、αｉ／Ｑｉ
）をパラメータとして第２図に示す如くに得られ、又波
長λｉの中心波長よりのずれＡλｉ（人）に対する結合
率ηｉ及び透過率Ｔｉ（光導波路ＬＯが光導波路Ｌｉに
結合するものとしてみたときの周期性構造Ｆｉの配され
ている位置を透過する透過率で与えられる）の関係が長
さＬｉをパラメータとして夫々第３図実線及び点線図示
の如くに得られるので、第２図のＬｉ対対立１１びＱｉ
−Ｌ ｉ対ηｉの関係、及び第３図のＡλ・対η・ 及
びＪλｉ対Ｔｉの関係よりＬｉＩ Ｉ）
の値を予め適当に選んで置くことにより、今光導波路Ｌ
Ｏの一端より波長λ１．λ２・・・・・・・・・λＮの
光を実線図示の如く大剣すると考えれば、波長λｉの光
を光導波路Ｌｉを介して実線図示の如く外部に導出し得
、従って光分波機能が得られ、又光導波路Ｌ１．Ｌ２．
・・・・・・・・・ＬＮに夫々波長λ１．λ２・・・・
・・・・・λＮの光を点線図示の如く大剣せしめれば、
之等を光導波路ＬＯを介してその一端より点線図示の如
く外部に導出し得、従って光合波機能が得られるもので
ある。and the ratio of αi to Qi (αo/Qt, αi/Qi
) are obtained as shown in Fig. 2 as parameters, and the coupling ratio ηi and transmittance Ti (assuming that the optical waveguide LO is coupled to the optical waveguide Li) for the deviation Aλi (person) of the wavelength λi from the center wavelength are (given by the transmittance through the position of the periodic structure Fi) can be obtained using the length Li as a parameter as shown in the solid line and dotted line in Figure 3, respectively. Conflict 11bi Qi
By appropriately selecting in advance the value of LiI from the relationship between −L i and ηi, and the relationships between Aλ and η and Jλi and Ti in FIG.
Wavelength λ1 from one end of O. λ2......If we consider the light of λN to be a large sword as shown by the solid line, the light of wavelength λi can be led out through the optical waveguide Li as shown by the solid line, and therefore the optical demultiplexing function is achieved. is obtained, and the optical waveguide L1. L2.
......LN each has a wavelength λ1. λ2...
...If the light of λN is made into a great sword as shown by the dotted line,
These can be led out from one end of the optical waveguide LO as shown by the dotted line, thus providing an optical multiplexing function.
斯く第１図にて上述せる構成によれば、光分波乃至合波
機能を得ることが出来、そしてこれ等機能が光導波路Ｌ
Ｏ及びＬｉ間にて逆方向性結合が得られるべく結合部Ｃ
ｉに周期性構造Ｆｉを形成してなるという構成で得られ
るので、それ等機能が低損失で得られると共に全体とし
ての装置を簡易、高密度に構成し得るものである。According to the configuration described above in FIG.
The bonding portion C is designed to obtain a reverse directional bond between O and Li.
Since the structure is obtained by forming a periodic structure Fi on i, these functions can be obtained with low loss, and the device as a whole can be constructed simply and with high density.
又導波路ＬＯ及びＬｉが互に異なる位相定数を有するの
で、結合部Ｃｉに於ける逆方向性結合につ５）でも高い
結合効率が得られるものである。Furthermore, since the waveguides LO and Li have mutually different phase constants, high coupling efficiency can be obtained even in the case of reverse coupling in the coupling portion Ci (5).
更に結合部Ｃｉに形成せる周期性構造Ｆｉが凹凸グレー
ディングによるものであるので、結合部Ｃｉに於て逆方
向性結合の得られる構成を容易に得ることが出来るもの
である。Furthermore, since the periodic structure Fi formed in the coupling part Ci is based on uneven grading, it is possible to easily obtain a configuration in which reverse directional coupling can be obtained in the coupling part Ci.
尚更に周期性構造ＦｉをＱｉ、Ｌｉ≧３なる条件が満足
される様に構成することにより、第２図より明らかな如
く結合部Ｃｉに於ける逆方向性結合の結合率を結合長に
依存することなしに高い一定値で得ることが出来る等の
大なる特徴を有するものである。Furthermore, by configuring the periodic structure Fi so that the condition Qi, Li≧3 is satisfied, the coupling rate of the opposite direction bond in the coupling part Ci depends on the bond length, as is clear from FIG. It has great features such as being able to obtain a high constant value without having to do much.
第４図及び第５図は夫々本発明の第２及び第３の実施例
を示し、第１図との対応部分には同一符号を附して詳細
説明はこれを省略するも、光導波路ＬＯと、それに１つ
の結合部Ｃ１を介して配された１つの光導波路Ｌ１とを
坦って結合導波路系を構成せる構成に於ても、光導波路
ＬＯ及びＬ１間に予定の波長λ１に対して逆方向性結合
が得られるべく結合部Ｃ１に周期性構造Ｆ１が形成され
てなる構成を有する。4 and 5 show second and third embodiments of the present invention, respectively. Parts corresponding to those in FIG. , and one optical waveguide L1 arranged via one coupling part C1 to form a coupled waveguide system, there is a difference between the optical waveguides LO and L1 for the expected wavelength λ1. It has a configuration in which a periodic structure F1 is formed in the coupling portion C1 so that reverse directional coupling can be obtained.
以上が本発明の第２及び第３の実施例の構成であるが、
斯る第２の実施例（第４図）の構成によれば光導波路Ｌ
Ｏの一端より波長λ１．λ２．λ３・・・・・・・・・
を有する光を人別せしめれば、波長λ１の光を光導波路
Ｌ１を介して外部に導出し得、又光導波路ＬＯの他端よ
り波長λ１の光以外の波長λ２゜λ３・・・・・・・・
・の光を出射せしめ得、従って光分岐機能が得られ、又
第３の実施例（第５図）の構成によれば光導波路ＬＯの
一端より波長λ、塩以外波長λ２．λ３・・・・・・・
・・を有する光を人別せしめている状態で、波長λ１の
光を光導波路Ｌ１に外部より人別せしめれば、光導波路
ＬＯの他端より波長λ λ λ・・・・・・・・・
を有する光を串刺せしめ得、１り２９３
従って光挿入機能が得られるものである。The above is the configuration of the second and third embodiments of the present invention,
According to the configuration of the second embodiment (FIG. 4), the optical waveguide L
Wavelength λ1 from one end of O. λ2. λ3・・・・・・・・・
If the light having the wavelength λ1 is differentiated, the light having the wavelength λ1 can be guided to the outside through the optical waveguide L1, and the light having the wavelength λ2゜λ3... ...
According to the configuration of the third embodiment (FIG. 5), the wavelength λ, the wavelength λ2 . λ3・・・・・・・・・
If the light with the wavelength λ1 is made to separate from the outside into the optical waveguide L1, the wavelength λ λ λ...・
It is possible to skewer the light having 1 293, and thus the light insertion function is obtained.
斯く第４図及び第５図にて上述せる構成によれば、夫々
光分岐機能及び光挿入機能を得ることが出来、そしてそ
れ等機能が第１図にて上述せる第１の実施例の場合と同
様の特徴を以って得られるものである。According to the configurations described above in FIGS. 4 and 5, it is possible to obtain an optical branching function and an optical addition function, respectively, and these functions can be obtained in the case of the first embodiment described above in FIG. It is obtained with the same characteristics as.
第６図は本発明の第４の実施例を示し、第１図との対応
部分には同一符号を附し詳細説明はこれを省略するも、
第１図にて上述せる構成に於て、波長λ１．λ２・・・
・・・・・・λＮの発振出力の得られる複数Ｎ個のレー
ザ８１，８２・・・・・・・・・ＳＮと、２等レーザ８
１，８２・・・・・・・・・ＳＮより得られる発振出力
の供給される複数Ｎ個の変調器Ｍ１．Ｍ２・・・・・・
・・・ＭＮとを有し、而して変調器Ｍ１．Ｍ２・・・・
・・・・・ＭＮが夫々光導波路Ｌ１．Ｌ２・・・・・・
・・・ＬＮに結合されてなることを除いては第１図の場
合と同様の構成を有する。FIG. 6 shows a fourth embodiment of the present invention, in which parts corresponding to those in FIG.
In the configuration described above in FIG. 1, wavelength λ1. λ2...
...N plural lasers 81, 82, which can obtain an oscillation output of λN, SN, and a second grade laser 8
A plurality of N modulators M1.1, 82...... are supplied with oscillation outputs obtained from SN. M2...
. . . MN, and the modulators M1. M2...
. . . MN is connected to the optical waveguide L1. L2...
. . . has the same configuration as that in FIG. 1 except that it is coupled to LN.
以上が本発明の第４の実施例の構成であるが、斯る構成
によれば、詳細説明にこれを省略するも光導波路ＬＯの
一端より波長λ１．λ２・・・・・・λＮの光の夫々信
号にて変調された光出力が波長多重化されて得られると
いう波長多重化機能が得られ、而して斯る機能が第１図
にて上述せる第１の実施例の場合と同様の特徴を以って
得られるものである。The above is the configuration of the fourth embodiment of the present invention. According to this configuration, the wavelength λ1. A wavelength multiplexing function is obtained in which the optical outputs modulated by the respective signals of light of λ2...λN are wavelength-multiplexed, and this function is described above in FIG. This embodiment has the same features as the first embodiment.
尚上述に於ては本発明の僅かな実施例を示したに留まり
、本発明の精神を脱することなしに種々の変型変更をな
し得るのであろう。The above description merely shows a few embodiments of the present invention, and various modifications and changes may be made without departing from the spirit of the present invention.
第１図は本発明による光分波乃至合波機能の得られるよ
うになされた光波長選択結合装置の実施例を示す路線的
平面図、第２図はその説明に供するＬｉ対ηｉ及びＱ
ｉ−Ｌｉ対ηｉの関係を示す曲線図、第３図は同様のＡ
λｉ対η１１及びＡλｉ対Ｔｉの関係を示す曲線図、第
４図及び第５図は夫々本発明による光分岐機能及び光挿
入機能が得られる様になされた光波長選択結合装置の実
施例を示す路線的平面図、第６図は夫々本発明による波
長多重化機能の得られる様になされた光波長選択結合装
置の実施例を示す路線的平面図である。
図中、ＬＯ，Ｌｉは光導波路、ＣＯ，Ｃｉは結合部、Ｆ
ｉは周期性構造、Ｓｉはレーザ、Ｍｉは変調器、１はコ
ア層を夫々示す。FIG. 1 is a schematic plan view showing an embodiment of an optical wavelength selective coupling device capable of obtaining optical demultiplexing or multiplexing functions according to the present invention, and FIG. 2 is a diagram showing Li vs. ηi and Q
A curve diagram showing the relationship between i-Li vs. ηi, and FIG.
Curve diagrams showing the relationship between λi vs. η11 and Aλi vs. Ti, and FIGS. 4 and 5 respectively show an embodiment of an optical wavelength selective coupling device which is adapted to provide an optical branching function and an optical adding function according to the present invention. FIG. 6 is a schematic plan view showing an embodiment of an optical wavelength selective coupling device which is adapted to provide a wavelength multiplexing function according to the present invention. In the figure, LO and Li are optical waveguides, CO and Ci are coupling parts, and F
i represents a periodic structure, Si represents a laser, Mi represents a modulator, and 1 represents a core layer.
Claims (1)
向に位置をずらして夫々複数Ｎ個の結合部ＣＩ、Ｃ２・
・・・・・・・・ＣＮを介して近接して配された複数Ｎ
個の光導波路Ｌｌ、Ｌ２・・・・・・・・・ＬＮとを有
する結合導波路系に於て、上記光導波路ＬＯ及びＬｉ（
但しｉ＝１，２・・・・・・・・・Ｎ）が互に位相定数
を異にし、上記光導波路ＬＯ及びＬｌ、ＬＯ及びＬｉ、
・・・・・・・・・ＬＯ及びＬＮ間にて夫々互に異なる
複数の波長λ１．λ２・・・・・・・・・λＮに対して
夫々逆方向性結合が得られるべく上記複数Ｎ個の結合部
ＣＩ、Ｃ２・・・・・・・・・ＣＮに、複数Ｎ個の凹凸
グレーディングによる周期性構造Ｆ１．Ｆ２・・・・・
・・・・ＦＮが、当該周期性構造Ｆｉの周期結合の強さ
Ｑｉと長さＬｉとがＱ ｉ 、 Ｌ ｉ≧３なる条件を
満足する様に形成されて光分波乃至合波の機能が得られ
る様になされたことを特徴とする光波長選択結合装置。 ２１つの光導波路ＬＯと、該光導波路ＬＯにその長さ方
向に位置をずらして夫々複数Ｎ個の結合部ＣＩ、Ｃ２・
・・・・・・・・ＣＮを介して近接して配された複数Ｎ
個の光導波路Ｌ１．Ｌ２・・・・・・・・・ＬＮとを有
する結合導波路系に於て、上記光導波路ＬＯ及びＬｉ（
但しｉ＝１，２・・・・・・・・・Ｎ）が互に位相定数
を異にし、上記光導波路ＬＯ及びＬｌ、ＬＯ及びＬｉ
・・・・・・・・・ＬＯ及びＬＮ間にて夫々互に異なる
複数の波長λ１．λ２・・・・・・・・・λＮに対して
夫々逆方向性結合が得られるべく上記複数Ｎ個の結合部
ＣＩ、Ｃ２・・・・・・・・・ＣＮに複数Ｎ個の凹凸グ
レーティングによる周期性構造Ｆ１．Ｆ２・・・・・・
・・・ＦＮが、当該周期性構造Ｆｉの周期結合の強さＱ
ｉと長さＬｉとがＱｉ−Ｌｉ≧３なる条件を満足する様
に形成されて光合波の機能が得られる様になされ、上記
波長λ１．λ２・・・・・・・・・λＮの発振出力の得
られる複数Ｎ個のレーザ８１，８２・・・・・・・・・
ＳＮと、該複数Ｎ個のレーザ８１，８２・・・・・・・
・・ＳＮより得られる発振出力の供給される複数Ｎ個の
変調器Ｍ１ 。 Ｍ２・・・・・・・・・ＭＮとを具備し、該変調器Ｍ１
．Ｍ２・・・・・・・・・ＭＮが夫々上記光導波路Ｌ１
．Ｌ２・・・・・・・・・ＬＮに結合されて波長多重化
機能が得られる様になされた事を特徴とする光波長選択
結合装置０３１つの光導波路ＬＯと、該光導波路ＬＯに
１つの結合部Ｃ１を介して近接して配された１つの光導
波路Ｌ１とを有する結合導波路系に於て、上記光導波路
ＬＯ及びＬｌが互に位相定数を異にし、上記光導波路Ｌ
Ｏ及びＬ１間に予定の波長λ１に対して逆方向性結合が
得られるべく、上記結合部Ｃ１に凹凸グレーディングに
よる周期性構造Ｆ１が、当該周期性構造Ｆ１の周期結合
の強さＱｌと長さＬｌとがＱｌ、Ｌ１≧３なる条件を満
足する様に形成されて光分岐乃至挟入機能が得られる様
になされた事を特徴とする光波長選択結合装置。[Range of patent claims] 11 optical wave road LO and optical waveway LO shift the position in the length direction, and multiple N co -joints CI, C2 ・
・・・・・・Multiple N arranged in close proximity via CN
In a coupling waveguide system having optical waveguides Ll, L2...LN, the optical waveguides LO and Li(
However, i=1, 2...N) have different phase constants, and the optical waveguides LO and Ll, LO and Li,
. . . A plurality of mutually different wavelengths λ1. between LO and LN. A plurality of N unevennesses are formed on the plurality of N coupling parts CI, C2......CN so as to obtain reverse directional coupling for each of λ2......λN. Periodic structure F1 by grading. F2...
...The FN is formed such that the periodic coupling strength Qi and the length Li of the periodic structure Fi satisfy the condition that Q i , Li ≧3, and performs optical demultiplexing and multiplexing functions. What is claimed is: 1. An optical wavelength selective coupling device characterized in that the device is configured to obtain the following. 21 optical waveguides LO, and a plurality of N coupling portions CI, C2, and N coupling portions shifted in the length direction of the optical waveguides LO, respectively.
・・・・・・Multiple N arranged in close proximity via CN
optical waveguides L1. In a coupled waveguide system having L2...LN, the optical waveguides LO and Li(
However, i=1, 2...N) have different phase constants, and the optical waveguides LO and Ll, LO and Li
. . . A plurality of mutually different wavelengths λ1. between LO and LN. A plurality of N concavo-convex gratings are provided at the plurality of N coupling parts CI, C2......CN to obtain reverse directional coupling for each of λ2......λN. A periodic structure F1. F2...
...FN is the periodic bond strength Q of the periodic structure Fi
i and the length Li satisfy the condition Qi-Li≧3 to obtain the optical multiplexing function, and the wavelength λ1. A plurality of N lasers 81, 82, which can obtain an oscillation output of λ2......λN
SN and the plurality of N lasers 81, 82...
... A plurality of N modulators M1 supplied with the oscillation output obtained from the SN. M2......MN, the modulator M1
．． M2...MN is the optical waveguide L1, respectively.
．． L2...... Optical wavelength selective coupling device 03 characterized in that it is coupled to LN to obtain a wavelength multiplexing function. One optical waveguide LO and one optical waveguide LO. In a coupled waveguide system having one optical waveguide L1 disposed close to each other via a coupling portion C1, the optical waveguides LO and Ll have mutually different phase constants, and the optical waveguide L
In order to obtain a reverse directional coupling for the expected wavelength λ1 between O and L1, a periodic structure F1 with uneven grading is provided at the coupling portion C1, and the periodic coupling strength Ql and length of the periodic structure F1 are 1. An optical wavelength selective coupling device characterized in that Ll is formed so that Ql satisfies the condition that L1≧3, so that an optical branching or interposing function can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54070279A JPS5851247B2 (en) | 1979-06-05 | 1979-06-05 | Optical wavelength selective coupling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54070279A JPS5851247B2 (en) | 1979-06-05 | 1979-06-05 | Optical wavelength selective coupling device |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58012632A Division JPS5851249B2 (en) | 1983-01-31 | 1983-01-31 | Optical wavelength selective coupling device |
| JP58012631A Division JPS5851248B2 (en) | 1983-01-31 | 1983-01-31 | Optical wavelength selective coupling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55163505A JPS55163505A (en) | 1980-12-19 |
| JPS5851247B2 true JPS5851247B2 (en) | 1983-11-15 |
Family
ID=13426892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54070279A Expired JPS5851247B2 (en) | 1979-06-05 | 1979-06-05 | Optical wavelength selective coupling device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5851247B2 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57211104A (en) * | 1981-06-22 | 1982-12-24 | Nippon Telegr & Teleph Corp <Ntt> | Directional coupler type optical demultiplexer having periodic structure |
| US4588255A (en) * | 1982-06-21 | 1986-05-13 | The Board Of Trustees Of The Leland Stanford Junior University | Optical guided wave signal processor for matrix-vector multiplication and filtering |
| JPS5919901A (en) * | 1982-07-26 | 1984-02-01 | Stanley Electric Co Ltd | Optical switch device |
| US4676584A (en) * | 1983-06-22 | 1987-06-30 | Metatech Corporation | Fiber optic light coupling assemblies |
| EP0130223B1 (en) * | 1983-06-25 | 1988-11-02 | ANT Nachrichtentechnik GmbH | Symmetrical waveguide coupler |
| US4737007A (en) * | 1986-02-24 | 1988-04-12 | American Telephone And Telegraph Company, At&T Bell Laboratories | Narrow-band wavelength selective optical coupler |
| JPH087371Y2 (en) * | 1988-07-14 | 1996-03-04 | 日本板硝子株式会社 | Directional coupler device |
| WO1997015851A1 (en) * | 1995-10-27 | 1997-05-01 | Arroyo Optics, Inc. | Wavelength selective optical devices |
| US7228030B2 (en) * | 2004-03-29 | 2007-06-05 | Intel Corporation | Method and apparatus providing an output coupler for an optical beam |
| JP4721753B2 (en) * | 2005-04-11 | 2011-07-13 | 太平電業株式会社 | Hydraulic circuit for high pressure hydraulic system |
| US10484120B2 (en) * | 2017-09-30 | 2019-11-19 | Intel Corporation | Waveguide couplers and junctions to enable frequency division multiplexed sensor systems in autonomous vehicle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438143A (en) * | 1977-08-31 | 1979-03-22 | Nec Corp | Waveguide type photo coupling circuit |
-
1979
- 1979-06-05 JP JP54070279A patent/JPS5851247B2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438143A (en) * | 1977-08-31 | 1979-03-22 | Nec Corp | Waveguide type photo coupling circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55163505A (en) | 1980-12-19 |
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