baber/WOPTO huggingface dataset:
Patent JP-2002528821-A (JP)
Title: 共用ファイル環境用の改良された情報格納および検索システムを有する物理格納アーキテクチャのための方法および装置
IPC: G06F12/00
Filed: 1999-08-03
Abstract: (57)【要約】
分散型格納システムは、必ずしも互いに接続され得ない複数の物理的格納デバイスを通じてデータアイテムの格納、検索、およびデータ共有を行う装置および方法を提供する。本発明は、別個の格納デバイス上に１つ以上の「パーティション」を含み、各パーティションは、関連付けられたデータファイルのグループを含む。多様な種類のパーティションがあり得、多様なクライアントのパーティションが、統合ファイルまたは別のパーティション中に常駐するファイルに様々な時期に結合され得る。本システムは、２つ以上のクライアント間のコンフリクトを解消して、更新情報が少しでもあれば、どの更新情報をライブラリパーティション中に格納するのか判定する。本発明のこの柔軟かつ自己参照型の表は、あらゆる種類の（構造化および非構造化の両方の）データを格納し得、他のアプリケーションプログラムへのインターフェースを提供し得る。
Patent JP-2002529409-A (JP)
Title: グルコース及び脂質低下化合物類
IPC: C07C69/743
Filed: 1999-11-10
Abstract: (57)【要約】
【目的】  脂質低下又はグルコース低下方法及び化合物、特に式（Ｉ）で示されるＡ-Ｂ環構造を有する脂質低下又はグルコース低下化合物が、なかでも提供される。
【構成】  式（Ｉ）中炭素５と６の間、炭素４とＲ2の間、及び炭素１１とＲ2の間の点線は、それぞれ数字の炭素から結合している炭素に二重結合がありうる場合もあることを表わし、Ｘはヒドロキシであるか又はＹと一緒に炭素８及び１２と結合するオキシを表わす。
Patent JP-2002531833-A (JP)
Title: サンプル流体を吸引および排出する方法および装置
IPC: G01N33/493
Filed: 1999-12-02
Abstract: (57)【要約】
本吸引および排出用装置は、フロースルー圧力変換器の第１のポートおよびブリードバルブに結合されたポートを有する、ダイルータを含む。フロースルー圧力変換器の第２のポートは、サンプルプローブの第１のポートに結合される。フロースルー圧力変換器は、検出器回路に変換器信号を供給する。本方法は、まずダイルータで所定量の空気を吸引するステップと、サンプルプローブを流体サンプルに向けて移動しながら空気を排出するステップと、プローブ内の圧力を測定しこれをベースラインとして用いるステップと、圧力をモニターしてプローブが流体サンプルに入ったことを示す圧力変化が起こったときを検出するステップと、ダイルータを定位置に戻しながら圧力を大気中に抜くステップと、ダイルータのバックラッシュを取り除くために所定の量の流体を吸引するステップと、所定の時間待機することによりシステムの流出を終了させた後、ダイルータで流体サンプルを吸引するステップと、が含まれる。このような方法および装置により、特に少ない体積が要求される場合において正確な吸引／排出が提供される。
Patent JP-2002534910-A (JP)
Title: モバイルｉｐデータを用いたモバイルターミネーティングｌ２ｔｐ
IPC: H04L29/06
Filed: 1999-12-14
Abstract: (57)【要約】
本発明の実施例によれば、レイヤ２トンネリングを用いたモバイルターミネーティングパケットの配信にモバイルＩＰバインディング情報が用いられる。モバイルノード宛のターミネーティングパケットがそのモバイルノードに対するホームネットワークで受信されると、そのモバイルノードが接続されているフォーリンネットワークのアドレスを得るためにモバイルＩＰバインディング情報が用いられる。レイヤ２トンネリングプロトコルトンネルがホームネットワーク及びフォーリンネットワーク間で生成される。フォーリンネットワークからモバイルノードに対して発呼がなされ、ホームネットワーク及びモバイルノード間に、ホームネットワーク及びフォーリンネットワーク間のレイヤ２トンネリングプロトコルトンネルを介したＰＰＰセッションが確立される。ＰＰＰセッションが確立された後、ホームネットワークは必要に応じてモバイルノードにプライベートＩＰアドレスを割り当て、そしてターミネーティングパケットをラベリングするホームＩＰアドレスをプライベートＩＰアドレスに変換する。
Patent JP-2002534779-A (JP)
Title: 電子ランプ安定器
IPC: H02M7/12
Filed: 1999-12-17
Abstract: (57)【要約】
共振タンク回路とインバータスイッチとを流れる循環電流を、高周波電流を線路インダクタを通して戻すように供給することにより減少させる。インバータ出力ノードと入力整流器回路の端子の１つとの間に共振負荷回路を接続する。入力整流器回路の交流側端子には、高周波キャパシタの１つの端子を接続する。線路インダクタ及び高周波キャパシタの値は、高周波電圧の各サイクルの一部分中、前記交流側端子に流れる瞬時的な高周波キャパシタ電流が、線路インダクタを経て前記交流側端子に流れる電流よりも大きな値を有するとともに、前者の電流が後者の電流の極性とは逆の極性を有するように選択する。
Patent JP-2002536937-A (JP)
Title: 圧縮可能ボタン相互接続コンタクト距離にわたって延在する制御インピーダンスｒｆピン
IPC: H01R12/70
Filed: 2000-01-27
Abstract: (57)【要約】
相互接続構造50は、２個の基板20,30 間においてＲＦ信号を相互接続するための相互接続伝送ラインを規定する。この相互接続構造は、導電性の外部遮蔽構造を形成する外部遮蔽部材34を含んでいる。固体導体ピン60は内部導体を形成する大きさにされ、第１のピン直径とこの第１のピン直径より大きい第２のピン直径のヘッド領域62とを備えており、前記ヘッド領域62は第１のピン端部と第２のピン端部との中間に形成されている。第１の誘電体管部材80は、遮蔽部材の開口にぴったり適合するようにその寸法に関連して大きさを定められた外径と、第１のピンの直径のピン60の第１の領域をぴったり受ける大きさにされた内径とを有しており、第１の管部材80は第１の管の第１の端部と第１の管の第２の端部とを有している。第２の誘電体管部材82は、外部遮蔽54にぴったり適合する大きさにされた外径と、ピン60の第２の領域をぴったり受ける大きさにされた内径とを有している。管は遮蔽部材54内に適合してピンヘッド領域を捕捉する。高密度にパックされたワイヤから形成されたワイヤ束は、固体導体ピン60の端部を加圧した状態で管内にパックされ、遮蔽部材54の端部から突出し、結合基板20,30の表面と電気接触する。
Patent JP-2002537577-A (JP)
IPC: G02B6/42
Filed: 2000-02-07
Abstract: The present invention relates to a spring clip for holding the connection sides of optical units in contact with one another, said optical units including guide pins and optical coupling surfaces. The clip includes a main part from which hooked members project out generally at right angles. A first and a second hooked member are adapted to snap firmly over a first optical unit, whereas a third hooked member is adapted to urge an optical connection side on a second optical unit against an optical connection side on the first optical unit.
Patent JP-2002540612-A (JP)
IPC: H01L21/677
Filed: 2000-02-29
Abstract: A dual sided slot valve is in a vacuum body between adjacent process and transport modules. Separate valves are provided for each of two valve body slots, one body slot being separately closed or opened independently of the other. The separate valves allow a vacuum in the transport module while an adjacent process module is open to the atmosphere for servicing. The valve allows access to an open valve for servicing the open valve in that one actuator motor stops the valve in an open, but not vertically-spaced, position relative to the respective slot. The open valve is more easily reached by a gloved hand of a service worker. A separate actuator motor moves the valve vertically down from the open position and away from the slot to expose the sealing surface around the slot for cleaning. The vertical distance of the vertically-moved valve from an access opening makes it difficult for the worker's glove to reach the valve for service. However, in the vertically-moved position the valve does not interfere with the ability to clean around the valve door. The dual sided slot valves are offset relative to each other to reduce the distance occupied by the valve body between the adjacent transport and process modules.
Patent JP-2002540795-A (JP)
Title: Ｄｓｐ−４二重特異性ｍａｐキナーゼホスファターゼ
IPC: A61K38/00
Filed: 2000-04-07
Abstract: (57)【要約】
本発明の組成物および方法は、細胞増殖、細胞分化、および細胞の生存に関する状態の処置のために提供される。詳細には、二重特異性ホスファターゼＤＳＰ−４、およびＤＳＰ−４基質の脱リン酸化を刺激するＤＳＰ−４のポリペプチド改変体を提供する。ＤＳＰ−４のポリペプチドを用いて、例えば、ＤＳＰ−４活性を阻害する抗体および他の薬剤を同定し得る。ＤＳＰ−４のポリペプチドおよび薬剤を用いて、細胞増殖、細胞分化、および細胞の生存を調節し得る。
Patent JP-2002540881-A (JP)
Title: 超音波カテーテル用前置増幅器と保護回路
IPC: A61B8/12
Filed: 2000-04-06
Abstract: (57)【要約】
トランスジューサ(１０)を前置増幅器(２２)の入力端に接続した超音波カテーテル(５)。前置増幅器の入力端と出力端とに保護回路(２５)を設けて、トランスジューサ励起信号から前置増幅器を保護している。この前置増幅器は送信線(１５)の遠位端に接続する。
Patent JP-2002541898-A (JP)
IPC: A61B8/08
Filed: 1999-04-16
Abstract: An apparatus for measuring physical characteristics comprises means (20) to determine when an object (14) to be tested is correctly placed in the recess (12) of a main body (10). In a preferred embodiment the object is a foot and the device is useful in determining the presence of osteoporosis. Ultrasonic transmitter (34) is resiliently mounted in a first container (30) slidably received in the main body (10). The transmitter (34) is urged towards the object (14) but its movement is restricted. A piezoelectric ultrasonic receiver (48) spaced from the transmitter (34) also projects towards the body (14). The ultrasonic receiver (48) is resiliently mounted in a second hollow container (52) slidably received in the main body (10). The object (14) is subjected to a first frequency obtained by resonating the transmitter (34) in the thickness mode and a second lower frequency obtained by resonance in the radial mode.
Patent JP-2002207396-A (JP)
Title: Silencer
Inventor: MATSUMOTO YASUHIRO
IPC: G03G15/00
Filed: 2001-01-12
Abstract: PROBLEM TO BE SOLVED: To provide a silencer constituted so that a photoreceptor drum may be hardly deformed in the case the silencer is fitted into the photoreceptor drum, and the silencer may be prevented from easily dropping off the photoreceptor drum after the silencer is fitted into the drum once, and also, capable of presenting satisfactory damping and noise insulation effects. SOLUTION: The silencer 31 is fitted into the photoreceptor drum and brought into contact with the inner peripheral surface of the photoreceptor drum, many contact pieces 32 are arranged so as to extend from one end part 31a having a nearly O-shaped cross section toward the other end part 31b, and also, many contact pieces 32 are extended so as to become a tapered state from one end part 31a to the other end part 31b.
Patent JP-2002210606-A (JP)
Title: Groove processing device for generating dynamic pressure
Inventor: OTSUBO TAKENOBU
IPC: B23B41/12
Filed: 2001-01-12
Abstract: PROBLEM TO BE SOLVED: To provide a groove processing device for generating a dynamic pressure capable of efficiently and accurately processing a dynamic pressure generation groove of a fluid bearing on a sleeve constituted by a material having a high hardness. SOLUTION: The groove processing device is provided with a main shaft 1 to which a sleeve, i.e., an object to be processed is mounted and a blade tool 10 being coaxial to the main shaft 1 and processing a dynamic pressure generation groove 3 of a fluid bearing on an inner diameter surface 2a of the sleeve 2. At least one of the main shaft 1 and the blade tool 10 can be normally and reversely rotated making an axis center as a center and the main shaft 1 and the blade tool 10 can be relatively moved to an axial direction. A diameter (r) of a circle passing through a tip of a plurality of blades 11 with which the blade tool 10 is provided is larger than an inner diameter of the sleeve 2.
Patent JP-2001270918-A (JP)
Title: Unsaturated carboxylic acid polymer and its production method and use
Inventor: KIYONO YOSHIKATSU
IPC: C08F220/54
Filed: 2001-01-15
Abstract: PROBLEM TO BE SOLVED: To provide an unsaturated carboxylic acid polymer which is excellent in biodegradability and useful as a detergent builder exhibiting a high capability as a calcium ion scavenger; its production method; and a builder, a detergent composition, and a dispersant prepared by using the same. SOLUTION: This polymer has structural units comprising unsaturated carboxylic acid residues (e.g. acrylic acid residues or acrylic acid residues and maleic acid residues) and structural units in the form of hydroxyphenyl groups or aminophenyl groups bonded to methylenic main chains through amide groups, and has a number average mol.wt. of 500-1,000,000. A method for producing the polymer and a biodegradable builder, a detergent composition, and a dispersant each prepared from the polymer are also provided.
Patent JP-2002216228-A (JP)
Title: Vending machine
Inventor: TAKAHASHI MASANOBU
IPC: B65G59/00
Filed: 2001-01-15
Abstract: PROBLEM TO BE SOLVED: To reduce cost and trouble of drive means in a vending machine for cigarettes by increasing the housing number of cigarettes and decreasing the number of the drive means of a discharge device for discharging cigarettes. SOLUTION: This vending machine is provided with a plurality of stages of commodity housing parts 8 for stacking and ho using cigarettes 1 in the vertical direction, and the discharge device 18 having a pusher 19 for pressing the cigarette 1 and discharging it from a discharge port 9 provided on the lower end side of the commodity hosing part 8, and the drive means 21 for driving the pusher 19. The discharge device 18 is vertically movably supported to discharge the cigarettes 1 with the commodity housing parts 8 by use of one discharge device 18.
Patent JP-2002216707-A (JP)
Title: Manufacturing method of sealed battery
Inventor: NODA MUNEYOSHI
IPC: H01M2/02
Filed: 2001-01-16
Abstract: PROBLEM TO BE SOLVED: To provide a reliable large sealed battery having 400 mm or more of battery jar height and to be used for an uninterruptible power source and an emergency power source for communication by restricting the drop of strength and air-tightness of a welded part by the variations of a welding margin when performing welding due to unevenness of thermal shrinkage when forming a battery jar and unevenness of the battery jar height to be generated by expansion and shrinkage with the change of the atmospheric temperature. SOLUTION: In this manufacturing method of the sealed battery, height of the battery jar is measured before welding, and in response to the measured dimension, height position of the battery jar or a heat plate and a cover is adjusted to perform welding with a constant margin. The large sealed battery with high reliability on seal can be thereby supplied.
Patent JP-2002214270-A (JP)
Title: Temperature characteristic tester
Inventor: ISHII KUNIKAZU
IPC: G01R31/26
Filed: 2001-01-16
Abstract: PROBLEM TO BE SOLVED: To enable even heating of a test piece comprising electric parts quickly with a higher accuracy, achieve a mounting of the test piece on a contact surface and an electrical continuity simply in a shorter time in the testing of electrical characteristics, especially a temperature correction thereof with higher accuracy and efficiency at a less cost when the work piece is a quartz oscillator. SOLUTION: A temperature correction device of a quartz oscillator has a heat medium liquid passage 21, a heat transfer plate 2 provided with a contact surface 22 on which the quartz oscillator 1 is carried to contact it, a surrounding wall part 23 and the like, a body part 31, a socket 3 provided with a contact pin 32 rotatably supported on a support pin 31a and a twist spring 33 for energizing it in the direction of closing it and the like. Especially, a temperature correction test of the quartz oscillator is accomplished with higher accuracy and efficiency at a less cost.
Patent JP-2002213962-A (JP)
Title: Angular velocity sensor and its manufacturing method
Inventor: TAMURA MASAYA
IPC: G01C19/5769
Filed: 2001-01-18
Abstract: PROBLEM TO BE SOLVED: To realize miniaturization and cost reduction of a sensor while enhancing its detection performance by detecting angular velocities around two axes with a plurality of mass parts connected together. SOLUTION: A middle mass part 3, outside mass parts 4, and frame-like mass parts 5 and 6 are connected together by support beams 7, 9, and 10. The node parts 7A of each support beam 7 are fixed to a substrate 2 by means of a fixing part 11. Vibration generating parts 15 vibrate the mass parts 3 and 5 and the mass parts 4 and 6, in opposite phase to each other, by means of the support beams 7. When the mass part 3 is displaced in Y-axis direction by means of the support beam 9, angular velocity detection parts 19 detect the displacement thereof as an angular velocity Ω1 around Z axis. When the mass parts 4 are displaced in the Z-axis direction by means of the torsion support beams 10, angular velocity detection parts 23 detect the displacement thereof as an angular velocity Ω2 around the Y axis.  This allows an angular velocity sensor 1 to simultaneously detect the angular velocities Ω1 and Ω2 around the two axes.
Patent JP-2002217448-A (JP)
Title: Semiconductor light illuminance sensor
Inventor: KASHIURA YUKIKO
IPC: H01L27/14
Filed: 2001-01-19
Abstract: PROBLEM TO BE SOLVED: To provide a semiconductor light illuminance sensor which has infrared light components of a low sensitivity, even if light is incident from other device than a photodiode and which has stable operation in a circuit section. SOLUTION: An N-type region is formed around elements, which needs to be clear of the influence by scribe lines and an optical current. Carriers generated by irradiation of light and a diffusion current due to the optically excited carriers are absorbed by the N-type region.
Patent JP-2002216641-A (JP)
Title: Plasma display panel
Inventor: SUMITA KEISUKE
IPC: H01J11/24
Filed: 2001-01-23
Abstract: PROBLEM TO BE SOLVED: To provide a plasma display panel which is capable of repairing disconnection accurately by a simple process and working. SOLUTION: This plasma display panel has the leads for repairing in parallel to electrode leads on a substrate.
Patent JP-2002210305-A (JP)
Title: Dioxins detoxifying and removing agent and method for using the same
Inventor: MURAKAMI NORITAKE
IPC: C02F1/52
Filed: 2001-01-23
Abstract: PROBLEM TO BE SOLVED: To provide a dioxins detoxifying and removing agent for economically and simply detoxifying and removing dioxins contained in polluted water and exhaust gas discharged from an incineration plant or a factory, and a filter agent using the same. SOLUTION: The dioxins detoxifying and removing agent is prepared by adding a trivalent iron salt, a trivalent aluminum salt, a monovalent potassium salt, an alumina potassium salt, magnesium chloride and manganese sulfate to water to dissolve them therein. The filter agent is prepared by supporting the dioxins detoxifying and removing agent on a porous inorganic substance.
Patent JP-2002222791-A (JP)
Title: Substrate-treating device
Inventor: KOYAMA YOSHIHIRO
IPC: H01L21/306
Filed: 2001-01-25
Abstract: PROBLEM TO BE SOLVED: To provide a substrate-treating device for preventing a substrate from being contaminated by preventing the atmosphere including treatment liquid from returning through treatment liquid discharge piping. SOLUTION: Treatment liquid flowing through the treatment liquid discharge piping 19 falls to a bottom surface 21 of a storage container 2 from the tip of the treatment liquid discharge piping 19. Related to the bottom surface 21, a treatment liquid sensor 23 is provided to detect the falling of the treatment liquid from the treatment liquid discharge piping 19 to the bottom surface 21. Also, small flow rate discharge piping 3 for discharging air in the storage container 2 is connected onto the upper side surface of the storage container 2. Large flow rate discharge piping 4 for discharging treatment liquid that is collected at a lowest section 22 along with gas in the storage container 2 is connected to the side of the lowest section 22 in the storage container 2.  A valve 41 for allowing and rejecting the circulation of air in the large flow rate discharge piping 4 is included in the middle of the large flow rate exhaust piping 4.
Patent JP-2002218806-A (JP)
Title: Seedling press-attaching structure in transplanter
Inventor: WATARI KEISUKE
IPC: A01C11/02
Filed: 2001-01-26
Abstract: PROBLEM TO BE SOLVED: To enable the attachment of a seedling press member to a seedling- loading stand and facilitate the attachment, detachment and height adjustment of the seedling press in simple operations without especially disposing a fastening screw or the like, in a transplanter in which the seedling press member formed from vertical rods and lateral rods is attached to the seedling-loading stand, while using the lateral wire rod as a support shaft. SOLUTION: The support shaft 23 of a seedling press 20 is laterally movably supported on mutually facing holders 28 disposed on both the sides of the seedling-loading stand 9. The support shaft 23 of the seedling press 20 is laterally moved in one of the holders 28, and an elastically holding member 33 for press-holding the support shaft is formed on the side of the other of the holders 28.
Patent JP-2002231365-A (JP)
Title: Connector
Inventor: NANKO YUICHI
IPC: H01R13/42
Filed: 2001-01-29
Abstract: PROBLEM TO BE SOLVED: To make female and male connectors use a front retainer in common. SOLUTION: A pair of large cavities 33L and a pair of large cavities 43L are provided to face to each other in a female housing 30 and a male housing 40. The large cavity 33L of the female housing 30 is formed, so that the right side thereof deviates from a center line XF downward and the left side thereof deviates from the center line XF upward. A release space 37 is continuously provided over or under a bending space 36 in each large lance 34L. The large cavity 43L of the male housing 40 is formed, so that the left side thereof deviates from a center line XM downwardly and the right side thereof deviates from the center line XM upwardly. A release space 47 is provided continuously, over or under a bending space 46 of each large lance 44L.  A female side intruding part 55 and a male side intruding part 56, which are suitable for the female and male bending spaces 36 and 46 respectively, are formed to be adjacent above and below and opposite above and below to the right and left in the retainer 50.
Patent JP-2002222723-A (JP)
Title: Method of manufacturing magnet
Inventor: NAKAMURA HIDEKI
IPC: H01F41/02
Filed: 2001-01-29
Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a rare earth nitride magnet having high magnet characteristics. SOLUTION: This magnet manufacturing method comprises a quenching process of obtaining a quenched alloy by the use of a single roll method, a thermal treatment process of enabling the quenched alloy to undergo a thermal treatment for controlling its structure, and a nitriding process of making the thermally treated quenched alloy subjected to nitriding.  Provided that a position at which the direction of discharging alloy melt intersects the circumferential face of the cooling roll is represented by Ep, and the tangential line of the circumferential face of the cooling roll at the position Ep is represented by TL in the plane that contains a direction in which the quenched alloy flies off separating from the peripheral surface of a cooling roll and a vertical direction, a fan-shaped region which includes the position Ep as its center, has a central angle of 2 deg. to 10 deg., and contains the tangential line TL is set up, the quenched alloy flying off in the fan-shaped region is caught, and a magnet is manufactured by the use of the caught quenched alloy in this magnet manufacturing method.
Patent JP-2002229868-A (JP)
Title: Terminal device and computer program
Inventor: TERAMOTO HIROYO
IPC: G06F15/00
Filed: 2001-01-30
Abstract: PROBLEM TO BE SOLVED: To provide a terminal device capable of simply and promptly recovering even if a connection error is occurred. SOLUTION: This terminal device A is provided with a display 15 and a keyboard 16, and connected to a computer C in a network system through a relay device B. When detecting a duplication address error, a CPU 10 of the terminal device A indicates that the duplication address error occurs on the display 15, and indicates a connection establishing menu on the same screen.
Patent JP-2002233915-A (JP)
Title: Shaving cutter
Inventor: HAMANO AKIHIRO
IPC: B23F21/28
Filed: 2001-02-06
Abstract: PROBLEM TO BE SOLVED: To keep the sharpness and extend the life. SOLUTION: Two or more cutter 17 of a serration 34 of a shaving cutter are continuously disposed in the order of working for one tooth of a work gear in the direction of tooth trace in the same position.
Patent JP-2001298489-A (JP)
Title: Multi-mode scheduler
Inventor: IKEMATSU RYUICHI
IPC: H04L12/931
Filed: 2001-02-08
Abstract: PROBLEM TO BE SOLVED: To provide a multi-mode scheduler, that can be compatible with both a router where extension performance of number of ports is a requirement and a router where priority control among classes is a requirement, so as to realize a general-purpose scheduler. SOLUTION: All selection circuits 121-12M,..., 1k1-1kM select either of external assigned output port information and assigned output port information outputted from pre-stage N×M schedulers 110,..., 1(k-1)0, according to a selection control signal set from an external device (not shown). In the case of selecting the external assigned output port information, all the selection circuits 121-12M,..., 1k1-1kM select the external assigned output port information.
Patent JP-2002236225-A (JP)
Title: Method and device for manufacturing long-period fiber grating, long-period fiber grating and optical communication system
Inventor: MOBARA MASAICHI
IPC: G02B6/10
Filed: 2001-02-08
Abstract: PROBLEM TO BE SOLVED: To provide a method and a device for manufacturing a long-period fiber grating having a prescribed loss characteristics. SOLUTION: The device 1 for manufacturing the long-period fiber grating is provided with a laser device 2, a polarizer 3, a mirror 4 and an intensity modulating mask 5. A laser beam L radiated from the laser device 2 is reflected by the mirror 4 after being changed into linear polarized light by the polarizer 3, and the intensity modulating mask 5 is orthogonally irradiated by linear polarized light. An optical fiber 6 is irradiated by light transmitting the intensity modulating mask 5 to form the long-period fiber grating. At this time, the polarizing direction of the laser beam L is adjusted so as to be parallel or orthogonal to the longitudinal direction of the optical fiber 6 by rotating the polarizer 3. The shape of the polarization dependent loss characteristics of the long-period fiber grating is controlled by this adjustment.