US6334716B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical transmit/receive module and method of fabricating the same
Assignee: Fujitsu Ltd
•
Filing: 1999-10-06
•
Granted: 2002-01-01
•
Expires: 2019-10-06
Abstract
Abstract An optical module receives light traveling through an optical fiber in two ways. A coupler is provided in a case member and is attached to an end surface of a ferule having the optical fiber. The coupler allows light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflects light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis. A light emitting element is provided so as to be located on one of the first and second optical axes. A light receiving element is provided so as to be located on the other one of the first and second optical axes.
Inventors
- 👤 Jun Ojima
- 👤 Takashi Shiotani
- 👤 Sadayuki Miyata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:44
CPC Classifications
H; H04; H04B; H04B10/00; H04B10/40; G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4246; G02B6/4219; G02B6/422; G02B6/4221; G02B6/4236; G02B6/4237
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
127 words
An optical module receiving light traveling through an optical fiber in two ways, said optical module comprising: a case member; a coupler provided in the case member and attached to an end surface of a ferrule having the optical fiber, the coupler allowing a signal light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflecting a signal light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis; a light emitting element located on one of the first and second optical axes; and a light receiving element located on the other one of the first and second optical axes, said second wavelength being different than said first wavelength.
Claim 2
Dependent Claim
127 words
An optical module receiving light traveling through an optical fiber in two ways, said optical module comprising: a case member; a coupler provided in the case member and attached to an end surface of a ferrule having the optical fiber, the coupler allowing a signal light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflecting a signal light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis; a light emitting element located on one of the first and second optical axes; and a light receiving element located on the other one of the first and second optical axes, said second wavelength being different than said first wavelength.
Claim 3
Dependent Claim
76 words
The optical module as claimed in claim 1 , further comprising a first lens provided between the coupler and one of the light emitting element and the light receiving element and located on one of the first and second optical axes, and a second lens provided between the coupler and the other one of the light emitting element and the light receiving element and located on the other one of the first and second optical axes.
Claim 4
Dependent Claim
19 words
The optical module as claimed in claim 2 , wherein the first lens is attached to the case member.
Claim 5
Dependent Claim
26 words
The optical module as claimed in claim 2 , wherein the second lens is attached to a package in which the light receiving element is provided.
Claim 6
Dependent Claim
143 words
An optical module receiving light traveling through an optical fiber in two ways, said optical module comprising: a case member; a coupler provided in the case member and attached to an end surface of a ferrule having the optical fiber, the coupler allowing light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflecting light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis; a light emitting element located on one of the first and second optical axes; and a light receiving element located on the other one of the first and second optical axes, wherein the ferrule comprises a step portion formed on a part of an outer circumference portion of the ferrule, the step portion being perpendicular to the second optical axis.
Claim 7
Dependent Claim
143 words
An optical module receiving light traveling through an optical fiber in two ways, said optical module comprising: a case member; a coupler provided in the case member and attached to an end surface of a ferrule having the optical fiber, the coupler allowing light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflecting light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis; a light emitting element located on one of the first and second optical axes; and a light receiving element located on the other one of the first and second optical axes, wherein the ferrule comprises a step portion formed on a part of an outer circumference portion of the ferrule, the step portion being perpendicular to the second optical axis.
Claim 8
Dependent Claim
17 words
The optical module as claimed in claim 5 , wherein the step part comprises a mirror surface.
Claim 9
Dependent Claim
27 words
The optical module as claimed in claim 1 , further comprising an optical connection part of a receptacle type which couples the ferrule to the optical module.
Claim 10
Dependent Claim
24 words
The optical module as claimed in claim 1 , wherein the light emitting element is provided in a holder attached to the case member.
Claim 11
Dependent Claim
24 words
The optical module as claimed in claim 1 , wherein the light receiving element is provided in a package attached to the case member.
Claim 12
Dependent Claim
17 words
The optical module as claimed in claim 1 , wherein the coupler is of a prism type.
Claim 13
Dependent Claim
78 words
A ferrule assembly comprising: a ferrule in which an optical fiber is provided; and a coupler attached to an end surface of the ferrule, the coupler allowing signal light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflecting signal light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis, said second wavelength being different than said first wavelength.
Claim 14
Dependent Claim
78 words
A ferrule assembly comprising: a ferrule in which an optical fiber is provided; and a coupler attached to an end surface of the ferrule, the coupler allowing signal light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflecting signal light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis, said second wavelength being different than said first wavelength.
Claim 15
Dependent Claim
17 words
The ferrule assembly as claimed in claim 11 , wherein the coupler is of a prism type.
Claim 16
Dependent Claim
16 words
The ferrule assembly as claimed in claim 11 , wherein the coupler has a cubic shape.
Claim 17
Dependent Claim
96 words
A ferrule assembly comprising: a ferrule in which an optical fiber is provided; and a coupler attached to an end surface of the ferrule, the coupler allowing light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflecting light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis, wherein the ferrule has a step portion formed on a part of an outer circumference portion of the ferrule, the step portion being perpendicular to the second optical axis.
Claim 18
Dependent Claim
96 words
A ferrule assembly comprising: a ferrule in which an optical fiber is provided; and a coupler attached to an end surface of the ferrule, the coupler allowing light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflecting light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis, wherein the ferrule has a step portion formed on a part of an outer circumference portion of the ferrule, the step portion being perpendicular to the second optical axis.
Claim 19
Independent Claim
147 words
A method of fabricating an optical module comprising: assembling a case member, a coupler attached to an end surface of a ferrule having the optical fiber, a light emitting element and a light receiving element into the optical module, the coupler allowing light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflecting light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis, the ferrule having a step portion formed on a part of an outer circumference portion of the ferrule, the step portion being perpendicular to the second optical axis; projecting a laser beam onto the step portion in a direction perpendicular to the first optical axis; and adjusting an angle of rotation of the ferrule by referring to the laser beam reflected by the step portion.
Claim 20
Independent Claim
147 words
A method of fabricating an optical module comprising: assembling a case member, a coupler attached to an end surface of a ferrule having the optical fiber, a light emitting element and a light receiving element into the optical module, the coupler allowing light of a first wavelength to pass therethrough along a first optical axis of the optical fiber and reflecting light of a second wavelength so that reflected light travels along a second optical axis perpendicular to the first optical axis, the ferrule having a step portion formed on a part of an outer circumference portion of the ferrule, the step portion being perpendicular to the second optical axis; projecting a laser beam onto the step portion in a direction perpendicular to the first optical axis; and adjusting an angle of rotation of the ferrule by referring to the laser beam reflected by the step portion.
References Cited (Backward Citations)
US4373814A
Cited
US5125053A
Cited
US5127075A
Cited
US5838859A
Cited
US5841562A
Cited
US6040934A
Cited
US5867622A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-12-31 | 2005-07-02 | 2006-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-12-31 | 2009-07-02 | 2010-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-12-31 | 2013-07-02 | 2014-01-01 | $7700.00 | Window Closed / Lapsed |