JPH11142671A5 - - Google Patents
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- Publication number
- JPH11142671A5 JPH11142671A5 JP1998257920A JP25792098A JPH11142671A5 JP H11142671 A5 JPH11142671 A5 JP H11142671A5 JP 1998257920 A JP1998257920 A JP 1998257920A JP 25792098 A JP25792098 A JP 25792098A JP H11142671 A5 JPH11142671 A5 JP H11142671A5
- Authority
- JP
- Japan
- Prior art keywords
- profile
- refractive index
- optical waveguide
- mode optical
- less
- 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
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Description
【特許請求の範囲】
【請求項１】 コア屈折率分布を有するコアガラス領域と、前記コアガラス領域を包囲するとともにこれに接しクラッド屈折率分布を有する環状クラッドガラス層と、を含む低減衰となるように最適化されたシングルモード光導波路であって、
前記コア屈折率分布の少なくとも一部は、前記クラッド屈折率分布の少なくとも一部よりも大であり、
前記コアガラス領域は、
外側半径ｒ 1 、相対屈折率Δ 1 ％及び中心線を有する中央セグメントと、
前記中央セグメントを包囲するとともにこれに接し相対屈折率Δ 2 ％を有する第１環状セグメントと、
前記第１環状セグメントを包囲するとともにこれに接し中心半径ｒ 3 、相対屈折率Δ 3 ％及び半分の相対屈折率点での幅ｗ 3 を有する第２環状セグメントと、を含み、
前記コア屈折率分布及び前記クラッド屈折率分布は、
Δ 1 ％＞Δ 3 ％＞Δ 2 ％なるΔ 1 ％、Δ 2 ％、Δ 3 ％を有する少なくとも３つのセグメントを含み、
１５７５ｎｍよりも大なるゼロ分散波長、
０．１ｐｓ／ｎｍ 2 −ｋｍ未満の分散傾斜、
７．９μｍよりも大なるモードフィールド直径となるように選択されていて、
前記コア屈折率分布は、
１５５０ｎｍで０．２０３ｄＢ／ｋｍ未満の減衰となるように選択されていることを特徴とするシングルモード光導波路ファイバ。
【請求項２】 １５５０ｎｍで減衰が０．１９ｄＢ／ｋｍ以下であることを特徴とする請求項１記載のシングルモード光導波路ファイバ。
【請求項３】 Δ 1 ％は０．７７％から１．３０％までの範囲内にあって、ｒ 1 は２．０４μｍから３．４１μｍの間にあって、Δ 2 ％は０から０．１６％までの範囲内にあって、Δ 3 ％は０から０．５１％までの範囲内にあって、ｒ 3 は５．５３μｍから１０．２１μｍの間にあって、ｗ 3 は０から５．７６μｍの間にあることを特徴とする請求項１又は２記載のシングルモード光導波路ファイバ。
【請求項４】 ０．１ｐｓ／ｎｍ 2 −ｋｍ以下の全分散傾斜、１５００ｎｍ以下のカットオフ波長であることを特徴とする請求項１乃至３のうちの１に記載のシングルモード光導波路ファイバ。
【請求項５】 ９．１μｍ未満のモードフィールド直径を有することを特徴とする請求項１乃至４のうちの１に記載のシングルモード光導波路ファイバ。
【請求項６】 ピン配列曲げ状態下で誘導される減衰によって定義付けられ、前記ピン配列曲げ減衰が８ｄＢ以下であることを特徴とする請求項１乃至５のうちの１に記載のシングルモード光導波路ファイバ。
【請求項７】 ゼロ分散波長が１５７５ｎｍから１５９５ｎｍまでの範囲内にあることを特徴とする請求項１乃至６のうちの１に記載のシングルモード光導波路ファイバ。
【請求項８】 内側分布量及び外側分布量によって更に定義付けられ、前記内側分布量は約３．０２単位、前記外側分布量は約３．９単位であって、前記範囲から選択された分布パラメータの組み合わせは１５５０ｎｍで０．１９ｄＢ／ｋｍ以下の減衰を有するシングルモード導波路を与えることを特徴とする請求項１乃至７のうちの１に記載のシングルモード光導波路ファイバ。
【請求項９】 内側分布量及び外側分布量によって更に定義付けられ、前記内側分布量は２．６７単位から３．６２単位の範囲内にあって、前記外側分布量は１．００単位から７．８５単位の範囲内にあって、前記範囲から選択された分布パラメータの組み合わせは１５５０ｎｍで０．２０３ｄＢ／ｋｍ以下の減衰を有するシングルモード導波路を与えることを特徴とする請求項１乃至８のうちの１に記載のシングルモード光導波路ファイバ。
【請求項１】 コア屈折率分布を有するコアガラス領域と、前記コアガラス領域を包囲するとともにこれに接しクラッド屈折率分布を有する環状クラッドガラス層と、を含む低減衰となるように最適化されたシングルモード光導波路であって、
前記コア屈折率分布の少なくとも一部は、前記クラッド屈折率分布の少なくとも一部よりも大であり、
前記コアガラス領域は、
外側半径ｒ 1 、相対屈折率Δ 1 ％及び中心線を有する中央セグメントと、
前記中央セグメントを包囲するとともにこれに接し相対屈折率Δ 2 ％を有する第１環状セグメントと、
前記第１環状セグメントを包囲するとともにこれに接し中心半径ｒ 3 、相対屈折率Δ 3 ％及び半分の相対屈折率点での幅ｗ 3 を有する第２環状セグメントと、を含み、
前記コア屈折率分布及び前記クラッド屈折率分布は、
Δ 1 ％＞Δ 3 ％＞Δ 2 ％なるΔ 1 ％、Δ 2 ％、Δ 3 ％を有する少なくとも３つのセグメントを含み、
１５７５ｎｍよりも大なるゼロ分散波長、
０．１ｐｓ／ｎｍ 2 −ｋｍ未満の分散傾斜、
７．９μｍよりも大なるモードフィールド直径となるように選択されていて、
前記コア屈折率分布は、
１５５０ｎｍで０．２０３ｄＢ／ｋｍ未満の減衰となるように選択されていることを特徴とするシングルモード光導波路ファイバ。
【請求項２】 １５５０ｎｍで減衰が０．１９ｄＢ／ｋｍ以下であることを特徴とする請求項１記載のシングルモード光導波路ファイバ。
【請求項３】 Δ 1 ％は０．７７％から１．３０％までの範囲内にあって、ｒ 1 は２．０４μｍから３．４１μｍの間にあって、Δ 2 ％は０から０．１６％までの範囲内にあって、Δ 3 ％は０から０．５１％までの範囲内にあって、ｒ 3 は５．５３μｍから１０．２１μｍの間にあって、ｗ 3 は０から５．７６μｍの間にあることを特徴とする請求項１又は２記載のシングルモード光導波路ファイバ。
【請求項４】 ０．１ｐｓ／ｎｍ 2 −ｋｍ以下の全分散傾斜、１５００ｎｍ以下のカットオフ波長であることを特徴とする請求項１乃至３のうちの１に記載のシングルモード光導波路ファイバ。
【請求項５】 ９．１μｍ未満のモードフィールド直径を有することを特徴とする請求項１乃至４のうちの１に記載のシングルモード光導波路ファイバ。
【請求項６】 ピン配列曲げ状態下で誘導される減衰によって定義付けられ、前記ピン配列曲げ減衰が８ｄＢ以下であることを特徴とする請求項１乃至５のうちの１に記載のシングルモード光導波路ファイバ。
【請求項７】 ゼロ分散波長が１５７５ｎｍから１５９５ｎｍまでの範囲内にあることを特徴とする請求項１乃至６のうちの１に記載のシングルモード光導波路ファイバ。
【請求項８】 内側分布量及び外側分布量によって更に定義付けられ、前記内側分布量は約３．０２単位、前記外側分布量は約３．９単位であって、前記範囲から選択された分布パラメータの組み合わせは１５５０ｎｍで０．１９ｄＢ／ｋｍ以下の減衰を有するシングルモード導波路を与えることを特徴とする請求項１乃至７のうちの１に記載のシングルモード光導波路ファイバ。
【請求項９】 内側分布量及び外側分布量によって更に定義付けられ、前記内側分布量は２．６７単位から３．６２単位の範囲内にあって、前記外側分布量は１．００単位から７．８５単位の範囲内にあって、前記範囲から選択された分布パラメータの組み合わせは１５５０ｎｍで０．２０３ｄＢ／ｋｍ以下の減衰を有するシングルモード導波路を与えることを特徴とする請求項１乃至８のうちの１に記載のシングルモード光導波路ファイバ。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5877497P | 1997-09-12 | 1997-09-12 | |
| US60/058774 | 1997-09-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11142671A JPH11142671A (ja) | 1999-05-28 |
| JPH11142671A5 true JPH11142671A5 (ja) | 2005-10-27 |
Family
ID=22018846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10257920A Pending JPH11142671A (ja) | 1997-09-12 | 1998-09-11 | 低減衰光導波路 |
Country Status (12)
| Country | Link |
|---|---|
| US (3) | US6134367A (ja) |
| EP (1) | EP0902307B1 (ja) |
| JP (1) | JPH11142671A (ja) |
| KR (1) | KR100633904B1 (ja) |
| CN (1) | CN1217475A (ja) |
| AT (1) | ATE345513T1 (ja) |
| AU (1) | AU745954B2 (ja) |
| BR (1) | BR9803400A (ja) |
| CA (1) | CA2246821A1 (ja) |
| DE (1) | DE69836402T2 (ja) |
| ID (1) | ID21430A (ja) |
| TW (1) | TW457379B (ja) |
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| GB887669A (en) | 1959-04-15 | 1962-01-24 | Ici Ltd | Polyvinyl chloride compositions |
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| US5835655A (en) * | 1995-01-26 | 1998-11-10 | Corning Incorporated | Large effective area waveguide fiber |
| US5748824A (en) * | 1995-11-17 | 1998-05-05 | Corning Incorporated | Positive dispersion optical waveguide |
| US5649044A (en) * | 1995-11-21 | 1997-07-15 | Corning Incorporated | Dispersion shifted optical waveguide |
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| JP3369389B2 (ja) | 1996-02-08 | 2003-01-20 | 住友電気工業株式会社 | 分散シフト光ファイバ |
| CA2225889A1 (en) | 1996-12-27 | 1998-06-27 | Sumitomo Electric Industries, Ltd. | Dispersion-shifted fiber |
| JPH10274720A (ja) * | 1997-01-29 | 1998-10-13 | Sumitomo Electric Ind Ltd | シングルモード光ファイバ |
| DE69837506T2 (de) * | 1997-02-26 | 2007-12-27 | Nippon Telegraph And Telephone Corp. | Optische Faser |
| TW449665B (en) * | 1997-06-23 | 2001-08-11 | Corning Inc | High dispersion zero waveguide fiber |
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- 1998-08-17 EP EP98115438A patent/EP0902307B1/en not_active Expired - Lifetime
- 1998-08-17 AT AT98115438T patent/ATE345513T1/de not_active IP Right Cessation
- 1998-08-17 DE DE69836402T patent/DE69836402T2/de not_active Expired - Fee Related
- 1998-09-02 US US09/145,755 patent/US6134367A/en not_active Expired - Lifetime
- 1998-09-02 AU AU83045/98A patent/AU745954B2/en not_active Ceased
- 1998-09-07 ID IDP981200A patent/ID21430A/id unknown
- 1998-09-08 CA CA002246821A patent/CA2246821A1/en not_active Abandoned
- 1998-09-09 BR BR9803400-6A patent/BR9803400A/pt not_active IP Right Cessation
- 1998-09-11 CN CN98119170A patent/CN1217475A/zh active Pending
- 1998-09-11 KR KR1019980037615A patent/KR100633904B1/ko not_active Expired - Fee Related
- 1998-09-11 JP JP10257920A patent/JPH11142671A/ja active Pending
- 1998-10-23 TW TW087117716A patent/TW457379B/zh not_active IP Right Cessation
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