JP2001141566A - Light branching filter and light receiving element array - Google Patents
Light branching filter and light receiving element arrayInfo
- Publication number
- JP2001141566A JP2001141566A JP32200499A JP32200499A JP2001141566A JP 2001141566 A JP2001141566 A JP 2001141566A JP 32200499 A JP32200499 A JP 32200499A JP 32200499 A JP32200499 A JP 32200499A JP 2001141566 A JP2001141566 A JP 2001141566A
- Authority
- JP
- Japan
- Prior art keywords
- light
- receiving element
- light receiving
- element array
- demultiplexed
- 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
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、波長多重された光
のスペクトルをモニタする光分波器、および光分波器の
検出器に用いられる受光素子アレイに関する。[0001] 1. Field of the Invention [0002] The present invention relates to an optical demultiplexer for monitoring the spectrum of wavelength-multiplexed light, and a light receiving element array used for a detector of the optical demultiplexer.
【０００２】[0002]
【従来の技術】光の連続スペクトルを測定するための計
測装置（スペクトルモニタ）として、集光レンズで集光
された光を折り返しミラーで反射し、回折格子で連続ス
ペクトルを形成し、検出器で光の連続スペクトルを計測
する装置が知られている（島津製作所ポリクロメータ測
光システム、型番ＰＳＳ−１００）。この計測装置の検
出器は、受光素子が１列に配列されたアレイであり、波
長のスペクトルモニタとして用いられている。2. Description of the Related Art As a measuring device (spectral monitor) for measuring a continuous spectrum of light, light condensed by a condenser lens is reflected by a turning mirror, a continuous spectrum is formed by a diffraction grating, and a continuous spectrum is formed by a detector. A device for measuring a continuous spectrum of light is known (Shimadzu Corporation polychromator photometric system, model number PSS-100). The detector of this measuring device is an array in which light receiving elements are arranged in one line, and is used as a wavelength spectrum monitor.
【０００３】図１は、従来の受光素子アレイを示す。複
数個の受光素子Ｒ1 ，Ｒ2 ，Ｒ3 …が１列に配列されて
いる。FIG. 1 shows a conventional light receiving element array. A plurality of light receiving elements R 1 , R 2 , R 3 ... Are arranged in one row.
【０００４】[0004]
【発明が解決しようとする課題】上述した従来のスペク
トルモニタを用いて、例えば波長多重伝送方式の光通信
システムにおいて、人為的に間隔をあけた狭いスペクト
ル幅の光が多重化された光を監視する場合、受光素子ア
レイが１列に配列されているため、図１に示すように、
分波光Ｌ1 ，Ｌ2 ，Ｌ3 …と受光素子アレイＲ1 ，Ｒ
2 ，Ｒ3 …との位置合わせが困難であった。また、受光
素子アレイが１列配置であるため、受光素子アレイのピ
ッチに応じた分解能しかない、という問題があった。By using the above-mentioned conventional spectrum monitor, for example, in an optical communication system of a wavelength division multiplexing transmission system, light in which light having a narrow spectral width artificially spaced is multiplexed is monitored. In this case, since the light receiving element arrays are arranged in one row, as shown in FIG.
The demultiplexed light L 1 , L 2 , L 3 ... And the light receiving element arrays R 1 , R
2 , it was difficult to align with R 3 . Further, since the light receiving element arrays are arranged in one row, there is a problem that there is only a resolution corresponding to the pitch of the light receiving element arrays.
【０００５】本発明の目的は、分波光と受光素子との位
置合わせを高精度で行え、かつ、光分波器の分解能を向
上できる光分波器を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an optical demultiplexer capable of performing high-accuracy alignment of demultiplexed light and a light receiving element and improving the resolution of the optical demultiplexer.
【０００６】本発明の他の目的は、光分波器の検出器に
用いられる受光素子アレイを提供することにある。Another object of the present invention is to provide a light receiving element array used for a detector of an optical demultiplexer.
【０００７】本発明の他の目的は、受光素子アレイと分
波光との位置合わせの方法を提供することにある。It is another object of the present invention to provide a method of aligning a light receiving element array with demultiplexed light.
【０００８】[0008]
【課題を解決するための手段】光分波器は、前述したよ
うに例えば波長多重伝送方式の光通信システムにおい
て、受信側で多重伝送されてきた光を各波長毎に分離し
スペクトルを計測するデバイスとして用いられる。この
波長毎の集光点と受光素子アレイの各受光素子とがそれ
ぞれ対応するように配置されると、各波長毎の検出が行
える。As described above, in an optical communication system of, for example, a wavelength division multiplexing transmission system, an optical demultiplexer separates light multiplexed on a receiving side for each wavelength and measures a spectrum. Used as a device. If the light-collecting point for each wavelength and each light-receiving element of the light-receiving element array are arranged to correspond to each other, detection for each wavelength can be performed.
【０００９】本発明の第１の態様は、波長多重された光
を分波し、分波光のスペクトルをモニタする光分波器の
受光素子アレイにおいて、受光素子が２列に半ピッチず
らして千鳥状に配列されていることを特徴とする受光素
子アレイである。According to a first aspect of the present invention, in a light receiving element array of an optical demultiplexer for demultiplexing wavelength-multiplexed light and monitoring the spectrum of the demultiplexed light, the light receiving elements are staggered by half a pitch in two rows. A light receiving element array characterized by being arranged in a shape.
【００１０】本発明の第２の態様は、波長多重された光
を分波し、分波光のスペクトルをモニタする光分波器の
受光素子アレイにおいて、受光素子が２列に半ピッチず
らして千鳥状に配列されてなる受光素子アレイを有する
ことを特徴とする光分波器である。According to a second aspect of the present invention, in a light receiving element array of an optical demultiplexer for demultiplexing wavelength-multiplexed light and monitoring the spectrum of the demultiplexed light, the light receiving elements are staggered by half a pitch in two rows. An optical demultiplexer comprising a light receiving element array arranged in a shape.
【００１１】本発明の第３の態様は、受光素子が２列に
半ピッチずらして千鳥状に配列されてなる受光素子アレ
イを有し、波長多重された光を分波し、分波光を前記受
光素子アレイに入射し、分波光のスペクトルをモニタす
る光分波器において、互いに隣接する３個の受光素子ア
レイの接点に、前記分波光の中心がくるように位置合わ
せすることを特徴とする受光素子アレイと分波光との位
置合わせ方法である。この場合、複数の前記分波光を、
前記受光素子アレイの複数前記接点に、順次対応させて
位置合わせすることができる。In a third aspect of the present invention, there is provided a light-receiving element array in which light-receiving elements are arranged in a staggered manner with two rows shifted by half a pitch, splitting wavelength-multiplexed light, and splitting the split light. In an optical demultiplexer that is incident on a light receiving element array and monitors the spectrum of the demultiplexed light, the demultiplexed light is aligned so that the center of the demultiplexed light is brought into contact with three adjacent light receiving element arrays. This is a method for aligning the light receiving element array with the demultiplexed light. In this case, the plurality of demultiplexed lights are
Positioning can be performed so as to sequentially correspond to the plurality of contacts of the light receiving element array.
【００１２】以上のような本発明によれば、受光素子を
２列に半ピッチずらして千鳥状に配列することで、分波
光と受光素子との位置合わせを高精度で行うことができ
る。また、受光素子アレイの千鳥状の配置により、光分
波器の分解能を２倍に向上できる。According to the present invention as described above, by aligning the light receiving elements in a staggered manner by shifting the light receiving elements in two rows by a half pitch, it is possible to accurately position the demultiplexed light and the light receiving elements. In addition, the staggered arrangement of the light receiving element arrays can double the resolution of the optical demultiplexer.
【００１３】[0013]
【発明の実施の形態】図２は、本発明に係る光分波器を
示す。この光分波器は、少なくとも、一本の入力ファイ
バ１０，コリメータレンズ１２，回折格子１４，検出器
１６を構成要素としている。このような構成の光分波器
では、入力ファイバ１０からの光をコリメータレンズ１
２を介して回折格子１４で分波してから、再度コリメー
タレンズ１２を介して収束された光を、検出器１６で検
出している。FIG. 2 shows an optical demultiplexer according to the present invention. This optical demultiplexer includes at least one input fiber 10, a collimator lens 12, a diffraction grating 14, and a detector 16 as components. In the optical demultiplexer having such a configuration, the light from the input fiber 10 is transmitted through the collimator lens 1.
The light that has been demultiplexed by the diffraction grating 14 via the diffraction grating 2 and then converged again by the collimator lens 12 is detected by the detector 16.
【００１４】なお、以下の説明では、図３に示すように
Ｎチャンネルの光が多重化された信号光をモニタする例
について示す。図３において、Ｌ1 ，Ｌ2 ，…，ＬN
は、１チャンネル目からＮチャンネル目までの各分波光
を示している。In the following description, as shown in FIG. 3, an example of monitoring a signal light in which N-channel light is multiplexed will be described. In FIG. 3, L 1 , L 2 ,..., L N
Represents the demultiplexed light from the first channel to the N-th channel.
【００１５】検出器１６には、本発明の受光素子アレイ
が用いられている。受光素子アレイの一実施例を、図４
を参照して説明する。なお、図４は、受光素子アレイチ
ップが示されている。受光素子アレイ１８は、受光素子
を２列に半ピッチずらして千鳥状に配列して構成されて
いる。一方の列の受光素子を、Ｒ1 ，Ｒ3 ，Ｒ5 ，Ｒ
7 ，Ｒ9 …で示し、他方の列の受光素子を、Ｒ2 ，Ｒ
4 ，Ｒ6 ，Ｒ8 …で示している。The detector 16 includes a light receiving element array according to the present invention.
Is used. FIG. 4 shows an embodiment of the light receiving element array.
This will be described with reference to FIG. FIG. 4 shows a light receiving element array chip.
Is shown. The light receiving element array 18 is a light receiving element
Are arranged in a zigzag with two rows shifted by half a pitch.
I have. The light receiving element in one row is1 , RThree , RFive , R
7 , R9 , And the light receiving elements in the other row are denoted by RTwo , R
Four , R6 , R8 ... are indicated.
【００１６】受光素子Ｒ1 ，Ｒ3 ，Ｒ5 ，Ｒ7 ，Ｒ9 …
は、これらに対向するように設けられたボンディングパ
ッド２０に、配線２２によりそれぞれ接続されている。
一方、受光素子Ｒ2 ，Ｒ4 ，Ｒ6 ，Ｒ8 …は、これらに
対向するように設けられたボンディングパッド２４に、
配線２６によりそれぞれ接続されている。The light receiving elements R 1 , R 3 , R 5 , R 7 , R 9 ...
Are connected by wirings 22 to bonding pads 20 provided to face them.
On the other hand, the light receiving elements R 2 , R 4 , R 6 , R 8 ... Are connected to the bonding pads 24 provided so as to face them.
Each is connected by a wiring 26.
【００１７】以上のボンディングパッドの取り出しは一
例であり、全部を受光素子アレイの片側に取り出して、
受光素子をチップの端面に寄せる配置にしてもよい。The removal of the bonding pads described above is an example, and the entire bonding pads are removed to one side of the light receiving element array.
The light receiving element may be arranged to approach the end face of the chip.
【００１８】次に、２列に半ピッチずらして千鳥状に配
列された受光素子アレイと分波光との位置合わせについ
て説明する。Next, a description will be given of the alignment between the light-receiving element array arranged in a staggered manner with two rows shifted by half a pitch and the demultiplexed light.
【００１９】図５は、受光素子アレイ１８と、分波光Ｌ
1 ，Ｌ2 ，ＬN を示す。図からわかるように、分波光
は、互いに隣接する３個の受光素子に入射するように
し、互いに隣接する３個の受光素子の出力電圧または出
力電流をモニタする。FIG. 5 shows the light receiving element array 18 and the demultiplexed light L
1 , L 2 and L N are shown. As can be seen from the drawing, the demultiplexed light is made incident on three light receiving elements adjacent to each other, and the output voltage or output current of the three light receiving elements adjacent to each other is monitored.
【００２０】このように、互いに隣接する３個の受光素
子でモニタすると、分波光の位置合わせが高精度に行え
る。例えば、受光素子受光素子を、Ｒ2 ，Ｒ3 ，Ｒ4 の
接点Ｐに分波光の中心を位置合わせするには、受光素子
Ｒ2 とＲ4 の検出光量が同じで、受光素子Ｒ2 とＲ4 の
検出光量の和を、受光素子Ｒ3 の検出光量と一致させる
と、中心の位置合わせが行える。図５では、２チャンネ
ル目の分波光Ｌ2 は、その中心が受光素子アレイの接点
Ｐからずれていることを示している。このような分波光
Ｌ2 では、受光素子Ｒ6 とＲ8 の検出光量は異なり、受
光素子Ｒ6 とＲ 8 の検出光量の和は、受光素子Ｒ7 の検
出光量に等しいので、分波光Ｌ2 は接点Ｐに対し、受光
素子の配列方向にずれていることがわかる。Thus, the three light receiving elements adjacent to each other
Monitoring with a probe allows highly accurate alignment of demultiplexed light.
You. For example, the light receiving element is represented by RTwo , RThree , RFour of
To align the center of the demultiplexed light with the contact point P
RTwo And RFour Are the same, and the light receiving element RTwo And RFour of
The sum of the detected light amounts is calculated by the light receiving element RThree To match the amount of light detected
The center can be aligned. In FIG. 5, two channels
Demultiplexed light LTwo Is the center of the contact of the light-receiving element array
It is shown that it is shifted from P. Such demultiplexed light
LTwo Then, the light receiving element R6 And R8 Are different from each other.
Optical element R6 And R 8 The sum of the detected light amounts of7 Inspection
Since it is equal to the output light amount, the demultiplexed light LTwo Is the light receiving
It can be seen that the elements are shifted in the arrangement direction.
【００２１】また、本発明の受光素子アレイを用いれ
ば、受光素子アレイの分解能を向上させることができ
る。Further, by using the light receiving element array of the present invention, the resolution of the light receiving element array can be improved.
【００２２】図６，図７は、分解能向上を説明するため
の図である。図に示すように例えば４０μｍピッチの受
光素子Ｒ1 ，Ｒ2 …を２列に半ピッチずらして千鳥状に
配列すると、奇数番目と偶数番目の受光素子の重なり部
分は２０μｍになる。FIGS. 6 and 7 are diagrams for explaining an improvement in resolution. Light-receiving element R 1 in the example 40μm pitch as shown in FIG, when the sequence R 2 ... shifted by a half pitch in two rows in a staggered manner, overlapping portions of the odd and even light receiving element becomes 20 [mu] m.
【００２３】したがって図６に示すように、受光素子ア
レイ配列方向の長さが例えば１０μｍの分波光Ｌ1 ，Ｌ
2 ，…，Ｌn を互いに隣接する３個の受光素子の接点Ｐ
をおよそ中央にして半ピッチ毎に入射させることができ
る。したがって、従来の１列の受光素子よりなる受光素
子アレイに比べて、分解能を２倍にできることがわか
る。Therefore, as shown in FIG. 6, the demultiplexed lights L 1 and L having a length of, for example, 10 μm in the light receiving element array arrangement direction.
2, ..., the contacts P of the three light receiving elements adjacent to each other L n
Can be made incident at every half pitch with the center being approximately centered. Therefore, it can be seen that the resolution can be doubled as compared with a conventional light receiving element array having one row of light receiving elements.
【００２４】一方、図７に示すように、分波光Ｌ1 を、
受光素子Ｒ2 とＲ3 の重なりの中央に配置した場合、も
しＬ1 の位置が受光素子アレイ配列方向に５μｍ以上ず
れると、受光素子Ｒ2 ，Ｒ3 に隣接するＲ1 かＲ4 で分
波光Ｌ1 を検出できるので、２０μｍピッチの受光素子
アレイを１列で配置したのと同じ分解能が得られる。On the other hand, as shown in FIG. 7, the demultiplexed light L 1,
When placed in the center of the overlap of the light-receiving element R 2 and R 3, if the position of L 1 is shifted more 5μm receiving element array arrangement direction, min R 1 or R 4 adjacent to the light-receiving element R 2, R 3 can be detected waves light L 1, the same resolution is obtained as arranging the light-receiving element array of 20μm pitch 1 row.
【００２５】同様に、分波光Ｌ2 を、受光素子Ｒ5 とＲ
6 の重なりの中央に配置した場合、もしＬ2 の位置が配
列方向に５μｍ以上ずれると、受光素子Ｒ5 ，Ｒ6 に隣
接するＲ4 かＲ7 で分波光Ｌ2 を検出できるので、２０
μｍピッチの受光素子アレイを１列で配置したのと同じ
分解能が得られる。Similarly, the split light L 2 is transmitted to the light receiving elements R 5 and R 5.
When placed in the center of 6 overlap, if the position of L 2 is shifted over 5μm in the arrangement direction, it is possible to detect the light-receiving element R 5, adjacent to the R 6 R 4 or demultiplexed light L 2 in R 7, 20
The same resolution can be obtained as when the light receiving element arrays with a pitch of μm are arranged in one row.
【００２６】すなわち図７に示すような分波光の配置に
おいても受光素子の千鳥配置により、分解能が２倍に向
上できることがわかる。That is, it can be seen that the resolution can be doubled by the staggered arrangement of the light receiving elements even in the arrangement of the demultiplexed light as shown in FIG.
【図１】従来の受光素子アレイを示す図である。FIG. 1 is a diagram showing a conventional light receiving element array.
【図２】本発明に係る光分波器の構成を示す図である。FIG. 2 is a diagram showing a configuration of an optical demultiplexer according to the present invention.
【図３】Ｎチャンネルの光が多重化された信号光を示す
図である。FIG. 3 is a diagram illustrating signal light in which N-channel light is multiplexed;
【図４】受光素子アレイの一実施例を示す図である。FIG. 4 is a diagram showing one embodiment of a light receiving element array.
【図５】受光素子アレイと分波光との位置合わせを説明
するための図である。FIG. 5 is a diagram for explaining alignment between a light receiving element array and demultiplexed light.
【図６】分解能向上を説明するための図である。FIG. 6 is a diagram for explaining improvement in resolution.
【図７】分解能向上を説明するための図である。FIG. 7 is a diagram for explaining improvement in resolution.
１０ 入力ファイバ １２ コリメータレンズ １４ 回折格子 １６ 検出器 １８ 受光素子アレイ ２０，２４ ボンディングパッド ２２，２６ 配線 DESCRIPTION OF SYMBOLS 10 Input fiber 12 Collimator lens 14 Diffraction grating 16 Detector 18 Light receiving element array 20, 24 Bonding pad 22, 26 Wiring
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１１年１２月１７日（１９９９．１２．
１７）[Submission date] December 17, 1999 (1999.12.
17)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２０[Correction target item name] 0020
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００２０】このように、互いに隣接する３個の受光素
子でモニタすると、分波光の位置合わせが高精度に行え
る。例えば、受光素子Ｒ2 ，Ｒ3 ，Ｒ4 の接点Ｐに分波
光の中心を位置合わせするには、受光素子Ｒ2 とＲ4 の
検出光量が同じで、受光素子Ｒ2 とＲ4 の検出光量の和
を、受光素子Ｒ3 の検出光量と一致させると、中心の位
置合わせが行える。図５では、２チャンネル目の分波光
Ｌ2 は、その中心が受光素子アレイの接点Ｐからずれて
いることを示している。このような分波光Ｌ2では、受
光素子Ｒ6 とＲ8 の検出光量は異なり、受光素子Ｒ6 と
Ｒ8 の検出光量の和は、受光素子Ｒ7 の検出光量に等し
いので、分波光Ｌ2 は接点Ｐに対し、受光素子の配列方
向にずれていることがわかる。As described above, when monitoring is performed by the three light receiving elements adjacent to each other, the position of the split light can be adjusted with high accuracy. For example, to align the center of the light receiving element R 2, R 3, R 4 of the point P to the demultiplexed light is a detected light intensity of the light-receiving element R 2 and R 4 are the same, detection of the light receiving element R 2 and R 4 the sum of light quantity, the match with the detected light quantity of the light receiving element R 3, allows alignment of the center. In Figure 5, the demultiplexed light L 2 of the second channel indicates that the center is offset from the contact point P of the light receiving element array. In such demultiplexed light L 2, detecting light quantity of the light receiving elements R 6 and R 8 are different, the sum of the detected light intensity of the light-receiving element R 6 and R 8 is equal to the detection quantity of the light receiving element R 7, demultiplexed light L It can be seen that 2 is shifted from the contact point P in the arrangement direction of the light receiving elements.
【手続補正２】[Procedure amendment 2]
【補正対象書類名】図面[Document name to be amended] Drawing
【補正対象項目名】図７[Correction target item name] Fig. 7
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【図７】 FIG. 7
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 2G020 CB03 CC02 CC63 CD03 CD06 4M118 AA10 AB04 AB05 BA03 5F088 AA01 BA20 BB01 EA02 JA11 JA12 JA14 ────────────────────────────────────────────────── ─── Continued on the front page F term (reference) 2G020 CB03 CC02 CC63 CD03 CD06 4M118 AA10 AB04 AB05 BA03 5F088 AA01 BA20 BB01 EA02 JA11 JA12 JA14
Claims (4)
クトルをモニタする光分波器の受光素子アレイにおい
て、 受光素子が２列に半ピッチずらして千鳥状に配列されて
いることを特徴とする受光素子アレイ。1. A light-receiving element array of an optical demultiplexer for demultiplexing wavelength-multiplexed light and monitoring the spectrum of the demultiplexed light, wherein the light-receiving elements are staggered in two rows with a half pitch shift. A light receiving element array characterized by the above-mentioned.
クトルをモニタする光分波器において、 受光素子が２列に半ピッチずらして千鳥状に配列されて
なる受光素子アレイを有することを特徴とする光分波
器。2. An optical demultiplexer for demultiplexing wavelength-multiplexed light and monitoring the spectrum of the demultiplexed light, comprising a light-receiving element array in which light-receiving elements are staggered in two rows and shifted by half a pitch. An optical demultiplexer characterized in that:
に配列されてなる受光素子アレイを有し、波長多重され
た光を分波し、分波光を前記受光素子アレイに入射し、
分波光のスペクトルをモニタする光分波器において、 互いに隣接する３個の受光素子の出力電圧もしくは出力
電流を用いて位置合わせすることを特徴とする受光素子
アレイと分波光との位置合わせ方法。3. A light-receiving element array in which light-receiving elements are arranged in a staggered manner with two rows shifted by half a pitch, splits wavelength-multiplexed light, and makes the split light incident on the light-receiving element array.
A method for positioning a light-receiving element array and split light in an optical splitter that monitors the spectrum of the split light, using the output voltages or output currents of three light-receiving elements adjacent to each other.
の複数の素子位置に、順次対応させて位置合わせするこ
とを特徴とする請求項３記載の受光素子アレイと分波光
との位置合わせ方法。4. The alignment between a light-receiving element array and a demultiplexed light according to claim 3, wherein the plurality of demultiplexed lights are sequentially aligned with a plurality of element positions of the light-receiving element array. Method.
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32200499A JP2001141566A (en) | 1999-11-12 | 1999-11-12 | Light branching filter and light receiving element array |
| PCT/JP2000/006938 WO2001027573A1 (en) | 1999-10-08 | 2000-10-05 | Photodetector array and optical branching filter using the array |
| EP00964677A EP1156311A1 (en) | 1999-10-08 | 2000-10-05 | Photodetector array and optical branching filter using the array |
| CA002354267A CA2354267A1 (en) | 1999-10-08 | 2000-10-05 | Light-receiving element array and optical demultiflexer using the same |
| US09/857,634 US7062178B1 (en) | 1999-10-08 | 2000-10-05 | Photodetector array and optical branching filter using the array |
| CN00802203A CN1327532A (en) | 1999-10-08 | 2000-10-05 | Photodetector array and optical branching filter using the array |
| TW089120867A TW477076B (en) | 1999-10-08 | 2000-10-06 | Photodetector array and optical branching filter using the array |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32200499A JP2001141566A (en) | 1999-11-12 | 1999-11-12 | Light branching filter and light receiving element array |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001141566A true JP2001141566A (en) | 2001-05-25 |
Family
ID=18138856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32200499A Pending JP2001141566A (en) | 1999-10-08 | 1999-11-12 | Light branching filter and light receiving element array |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001141566A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002134765A (en) * | 2000-10-25 | 2002-05-10 | Toyo Commun Equip Co Ltd | Spectrum photodetector |
| JP2009253207A (en) * | 2008-04-10 | 2009-10-29 | Sharp Corp | Optical communication device and electronic equipment |
| WO2017007024A1 (en) * | 2015-07-08 | 2017-01-12 | 国立大学法人香川大学 | Spectroscope |
-
1999
- 1999-11-12 JP JP32200499A patent/JP2001141566A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002134765A (en) * | 2000-10-25 | 2002-05-10 | Toyo Commun Equip Co Ltd | Spectrum photodetector |
| JP2009253207A (en) * | 2008-04-10 | 2009-10-29 | Sharp Corp | Optical communication device and electronic equipment |
| JP4654264B2 (en) * | 2008-04-10 | 2011-03-16 | シャープ株式会社 | Optical communication device and electronic equipment |
| WO2017007024A1 (en) * | 2015-07-08 | 2017-01-12 | 国立大学法人香川大学 | Spectroscope |
| JPWO2017007024A1 (en) * | 2015-07-08 | 2018-04-19 | 国立大学法人 香川大学 | Spectrometer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2272033A1 (en) | Arrangement for determining the temperature and strain of an optical fiber | |
| WO1999046628A1 (en) | Optical demultiplexer and method of assembling the same | |
| JP3687529B2 (en) | Arrayed waveguide grating, optical transmitter, and optical communication system | |
| US6526199B1 (en) | Arrayed waveguide grating wavelength division multiplexer provided with alignment waveguides and apparatus for aligning the same | |
| US6785001B2 (en) | Method and apparatus for measuring wavelength jitter of light signal | |
| KR100322125B1 (en) | AWG module and method for monitoring optical signal using AWG module | |
| US6389201B1 (en) | Arrayed waveguide grating having arrayed waveguide employing taper structure | |
| US6452681B1 (en) | Optical spectrum analyzer | |
| JP2001141566A (en) | Light branching filter and light receiving element array | |
| US9874434B2 (en) | Position-measuring system, having scanning units multiplexed to light sources and detectors, for optically scanning a measuring standard and method for operating such a position-measuring system | |
| JPS62264009A (en) | Optical demultiplexer | |
| JP4680223B2 (en) | Chromatic dispersion measurement device | |
| US7062178B1 (en) | Photodetector array and optical branching filter using the array | |
| US9755738B2 (en) | Crosstalk suppression in a multi-photodetector optical channel monitor | |
| JP2001091357A (en) | Simultaneous analysis method of multiple optical spectrum | |
| JPH1138265A (en) | Wavelength multiplexed light monitoring device | |
| US6804428B1 (en) | Optical spectral power monitors employing polarization deversity scheme | |
| KR100342757B1 (en) | Apparatus for measuring property of multichannel optical signal in wavelength division multiplexing | |
| US7305185B2 (en) | Device for integrating demultiplexing and optical channel monitoring | |
| US20230228945A1 (en) | Architecture for wavelength multiplexers | |
| JP2001013006A (en) | Spectroscope | |
| JP2001083341A (en) | Array waveguide type diffraction grating | |
| JP2002134765A (en) | Spectrum photodetector | |
| WO2006085650A1 (en) | Wavelength monitoring device | |
| JP2001108524A (en) | Optical branching filter and light receiving element array |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040803 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20041130 |