JPH03265806A - Airtight structure of optical module - Google Patents
Airtight structure of optical moduleInfo
- Publication number
- JPH03265806A JPH03265806A JP6645790A JP6645790A JPH03265806A JP H03265806 A JPH03265806 A JP H03265806A JP 6645790 A JP6645790 A JP 6645790A JP 6645790 A JP6645790 A JP 6645790A JP H03265806 A JPH03265806 A JP H03265806A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- optical
- package
- glass plate
- lens
- 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
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 36
- 239000013307 optical fiber Substances 0.000 claims abstract description 29
- 230000008878 coupling Effects 0.000 claims abstract description 18
- 238000010168 coupling process Methods 0.000 claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 claims abstract description 18
- 239000011521 glass Substances 0.000 claims abstract description 13
- 239000004065 semiconductor Substances 0.000 claims description 9
- 229910000679 solder Inorganic materials 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/421—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical component consisting of a short length of fibre, e.g. fibre stub
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4248—Feed-through connections for the hermetical passage of fibres through a package wall
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
- Semiconductor Lasers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は光モジュールに関し、特に光ファイバと光半導
体素子を結合させる光モジュールの気密構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an optical module, and more particularly to an airtight structure of an optical module that couples an optical fiber and an optical semiconductor element.
従来、この種の光モジュールは、第５図に示すように、
光ファイバ１３を保持部材１５内に固定し、ガラス板１
６を介してその保持部材１５をパッケージ１４に気密固
定する構造となっていた。Conventionally, this type of optical module, as shown in FIG.
The optical fiber 13 is fixed in the holding member 15, and the glass plate 1
The structure was such that the holding member 15 was hermetically fixed to the package 14 via the holder 6.
また、光ファイバ１３と同一光軸上に配置される結合用
レンズ２及び光半導体素子１も、パッケージ１４の底部
に固定される構造となっていた。Further, the coupling lens 2 and the optical semiconductor element 1, which are arranged on the same optical axis as the optical fiber 13, were also fixed to the bottom of the package 14.
上述した従来の光モジュールは、光ファイバかパッケー
ジに固定され、かつその光ファイバと同一光軸上に配置
される結合用レンズ及び光半導体素子もパッケージ′の
底部に固定される構造となっているため、光モジュール
の使用環境温度の変化や、光モジュールを取付けるパネ
ル等から伝わる外力によって光モジュールのパッケージ
が変形し、同一軸上にあるへき光ファイバと結合用レン
ズの位置関係がずれ、光軸ずれか発生し易いという欠点
かある。The conventional optical module described above has a structure in which the optical fiber is fixed to the package, and the coupling lens and optical semiconductor element arranged on the same optical axis as the optical fiber are also fixed to the bottom of the package. As a result, the optical module package may be deformed due to changes in the temperature of the environment in which the optical module is used or external forces transmitted from the panel on which the optical module is installed, causing the positional relationship between the optical fiber and the coupling lens on the same axis to shift, causing the optical axis to shift. The disadvantage is that deviations tend to occur.
本発明の光モジュールの気密構造は、光半導体素子と第
１の結合用レンズと第１の光ファイバを含み、これらを
光軸上に配置してフラット形パッケージ内に気密固定さ
れた光モジュールに於て、前記第１の光ファイバの後端
部とパッケージ外面に固定された第２の光ファイバの先
端部にそれぞれ１個ずつの第２．第３の結合用レンズを
同一光軸上に配置し、それらの中間にガラス板を配置し
、かつ該ガラス板を前記フラット形パッケージに気密固
定したことを特徴とする。The airtight structure of the optical module of the present invention includes an optical semiconductor element, a first coupling lens, and a first optical fiber, and the optical module is arranged on the optical axis and hermetically fixed in a flat package. A second optical fiber is provided at the rear end of the first optical fiber and one at the tip of the second optical fiber fixed to the outer surface of the package. The third coupling lens is arranged on the same optical axis, a glass plate is arranged between them, and the glass plate is hermetically fixed to the flat package.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図及び第２図は本発明の第１の実施例の内部を示す
平面図及び側面図である。1 and 2 are a plan view and a side view showing the inside of a first embodiment of the present invention.
本実施例はパッケージ４の底部の上に光半導体素子（例
えば半導体レーザ）１と第１の結合用レンズ（例えば集
束性ロッドレンズ）２、及び第１の光ファイバ３の先端
部を保持している光フアイバ保持部材５がそれぞれ光軸
上に固定されている。In this embodiment, an optical semiconductor element (for example, a semiconductor laser) 1, a first coupling lens (for example, a focusing rod lens) 2, and the tip of a first optical fiber 3 are held on the bottom of a package 4. Optical fiber holding members 5 are each fixed on the optical axis.
さらにパッケージ４の側壁部１０には、気密を保つため
にガラス板８がガラスはんだ等で固定されており、この
ガラス板８をはさんで内側と外側から第１の光ファイバ
３の後端部と第２の光ファイバ９の先端部がそれぞれ第
２の結合用レンズ６と第３の結合用レンズ７を介して光
軸を合わせて配置されている。Furthermore, a glass plate 8 is fixed to the side wall part 10 of the package 4 with glass solder or the like to maintain airtightness, and the rear end of the first optical fiber 3 is inserted from the inside and outside with this glass plate 8 in between. and the tip of the second optical fiber 9 are arranged with their optical axes aligned through the second coupling lens 6 and the third coupling lens 7, respectively.
第３図及び第４図は本発明の第２及び第３の実である。3 and 4 are the second and third fruits of the present invention.
（発明の効果〕
以上説明したように本発明は、第１の光ファイバをパッ
ケージ内に含むことにより、周囲の温度変化や外力など
の影響を受けてパッケージが変形しても、この変形を第
１の光ファイバの先端と後端との間で吸収し、第１の光
ファイバの先端と第１の結合用レンズ及び光半導体素子
の間の位置関係に影響せず、光軸ずれを発生しない効果
がある。さらにガラス板によって気密が保持できる効果
がある。(Effects of the Invention) As explained above, the present invention includes the first optical fiber in the package, so that even if the package is deformed due to changes in ambient temperature or external force, this deformation can be prevented by the first optical fiber. Absorption occurs between the tip and rear end of the first optical fiber, does not affect the positional relationship between the tip of the first optical fiber, the first coupling lens, and the optical semiconductor element, and does not cause optical axis deviation. This is effective. Furthermore, the glass plate has the effect of maintaining airtightness.
第１図及び第２図は本発明の第１の実施例の内部を示す
平面図及び側面図、第３図及び第４図は本発明の第２及
び第３の実施例でそれぞれサーミスタと電子冷却素子を
内蔵した内部の平面図及び側面図、第５図は従来の光モ
ジュールの気密構造の一例の内部を示す側面図である。
１・・・光半導体素子、２・・・第１の結合用レンズ、
３、Ｊ３・・・第１の光ファイバ、４，１４・・・パッ
ケージ、５・・・光フアイバ保持部材、６・・・第２の
結合用レンズ、７・・・第３の結合用レンズ、８．１６
・・ガラス板、９・・・第２の光ファイバ、１０・・・
パッケージの側壁部、１１・・・サーミスタ、１２・・
・電子冷却素子、１５・・・保持部材。1 and 2 are a plan view and a side view showing the inside of a first embodiment of the present invention, and FIGS. 3 and 4 are a thermistor and an electronic device, respectively, showing a second and third embodiment of the present invention. FIG. 5 is a side view showing the inside of an example of an airtight structure of a conventional optical module. 1... Optical semiconductor element, 2... First coupling lens,
3, J3... First optical fiber, 4, 14... Package, 5... Optical fiber holding member, 6... Second coupling lens, 7... Third coupling lens , 8.16
...Glass plate, 9...Second optical fiber, 10...
Side wall of package, 11... thermistor, 12...
-Electronic cooling element, 15... holding member.
Claims (1)
を含み、これらを光軸上に配置してフラット形パッケー
ジ内に気密固定された光モジュールに於て、前記第１の
光ファイバの後端部とパッケージ外面に固定された第２
の光ファイバの先端部にそれぞれ１個ずつの第２，第３
の結合用レンズを同一光軸上に配置し、それらの中間に
ガラス板を配置し、かつ該ガラス板を前記フラット形パ
ッケージに気密固定したことを特徴とする光モジュール
の気密構造。In an optical module that includes an optical semiconductor element, a first coupling lens, and a first optical fiber, these are arranged on the optical axis and hermetically fixed in a flat package. A second one fixed to the rear end and the outer surface of the package.
one second and one third at the tip of the optical fiber.
An airtight structure for an optical module, characterized in that the coupling lenses are arranged on the same optical axis, a glass plate is arranged between them, and the glass plate is hermetically fixed to the flat package.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2066457A JP2968550B2 (en) | 1990-03-15 | 1990-03-15 | Airtight structure of optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2066457A JP2968550B2 (en) | 1990-03-15 | 1990-03-15 | Airtight structure of optical module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03265806A true JPH03265806A (en) | 1991-11-26 |
| JP2968550B2 JP2968550B2 (en) | 1999-10-25 |
Family
ID=13316319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2066457A Expired - Lifetime JP2968550B2 (en) | 1990-03-15 | 1990-03-15 | Airtight structure of optical module |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2968550B2 (en) |
-
1990
- 1990-03-15 JP JP2066457A patent/JP2968550B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2968550B2 (en) | 1999-10-25 |
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