US6775316B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for integrating a vertical cavity surface emitting laser with a optical amplifier
Assignee: Nortel Networks Ltd
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Filing: 2002-02-20
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Granted: 2004-08-10
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Expires: 2022-02-20
Abstract
Abstract Method and apparatus for integrating a VCSEL with a SOA, comprising positioning a collimating lens adjacent to the output of the VCSEL, positioning a focusing lens adjacent to the input of the SOA, and positioning a movable lens between the collimating lens and the focusing lens, where the movable lens has a focal length significantly longer than the focal length of the focusing lens; and moving the movable lens relative to the focusing lens so as to adjust the focusing spot on the input of the SOA.
Inventors
- 👤 Daryoosh Vakhshoori
- 👤 Masud Azimi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:51
CPC Classifications
H; H01; H01S; H01S5/00; H01S5/50; H01S5/005; H01S5/02; H01S5/022; H01S5/023; H01S5/02325; H01S5/10; H01S5/1003; H01S5/101; H01S5/1082; H01S5/1085; H01S5/18; H01S5/183
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
86 words
A method for integrating a VCSEL with a SOA, comprising: positioning a collimating lens adjacent to the output of the VCSEL, positioning a focusing lens adjacent to the input of the SOA, and positioning a movable lens between the collimating lens and the focusing lens, where the movable lens has a focal length significantly longer than the focal length of the focusing lens; and moving the movable lens relative to the focusing lens so as to adjust the focusing spot on the input of the SOA.
Claim 2
Independent Claim
86 words
A method for integrating a VCSEL with a SOA, comprising: positioning a collimating lens adjacent to the output of the VCSEL, positioning a focusing lens adjacent to the input of the SOA, and positioning a movable lens between the collimating lens and the focusing lens, where the movable lens has a focal length significantly longer than the focal length of the focusing lens; and moving the movable lens relative to the focusing lens so as to adjust the focusing spot on the input of the SOA.
Claim 3
Dependent Claim
23 words
A method cording to claim 1 wherein the movable lens is moved transverse to the light path between the VCSEL and the SOA.
Claim 4
Dependent Claim
27 words
A method according to claim 1 wherein the movable lens has a focal length at least five times longer than the focal length of the focusing lens.
Claim 5
Dependent Claim
27 words
A method according to claim 1 wherein the movable lens has a focal length at least ten times longer than the focal length of the focusing lens.
Claim 6
Dependent Claim
19 words
A method according to claim 1 wherein a mode expander is located between the SOA and the focusing lens.
Claim 7
Dependent Claim
20 words
A method according to claim 1 wherein an optical isolator is located between the movable lens and the collimating lens.
Claim 8
Dependent Claim
62 words
Apparatus for integrating a VCSEL with a SOA, comprising: a collimating lens positioned adjacent to the output of the VCSEL; a focusing lens positioned adjacent to the input of the SOA; and a movable lens positioned between the collimating lens and the focusing lens, where the movable lens has a focal length significantly longer than the focal length of the focusing lens.
Claim 9
Dependent Claim
62 words
Apparatus for integrating a VCSEL with a SOA, comprising: a collimating lens positioned adjacent to the output of the VCSEL; a focusing lens positioned adjacent to the input of the SOA; and a movable lens positioned between the collimating lens and the focusing lens, where the movable lens has a focal length significantly longer than the focal length of the focusing lens.
Claim 10
Dependent Claim
20 words
Apparatus according to claim 7 further comprising a movable assembly for moving the movable lens relative to the focusing lens.
Claim 11
Dependent Claim
27 words
Apparatus according to claim 8 wherein the movement assembly is adapted to move the movable lens transverse to the light path between the VCSEL and the SOA.
Claim 12
Dependent Claim
26 words
Apparatus according to claim 7 wherein the movable lens has a focal length at least five times longer than the focal length of the focusing lens.
Claim 13
Dependent Claim
26 words
Apparatus according to claim 7 wherein the movable lens has a focal length at least ten times longer than the focal length of the focusing lens.
Claim 14
Dependent Claim
18 words
Apparatus according to claim 7 wherein a mode expander is located between the SOA and the focusing lens.
Claim 15
Dependent Claim
19 words
Apparatus according to claim 7 wherein an optical isolator is located between the movable lens and the collimating lens.
Claim 16
Independent Claim
67 words
A method for integrating a VCSEL with a SOA, comprising: providing a VCSEL and providing a SOA; and butt-coupling the output coupler of the VCSEL to the input facet of the SOA, wherein the output facet of the SOA is angled with respect to the input facet of the SOA and the input facet of the SOA is anti-reflection coated to prevent excessive feedback to the VCSEL.
Claim 17
Independent Claim
67 words
A method for integrating a VCSEL with a SOA, comprising: providing a VCSEL and providing a SOA; and butt-coupling the output coupler of the VCSEL to the input facet of the SOA, wherein the output facet of the SOA is angled with respect to the input facet of the SOA and the input facet of the SOA is anti-reflection coated to prevent excessive feedback to the VCSEL.
Claim 18
Dependent Claim
17 words
A method according to claim 14 wherein the output facet of the SOA is also anti-reflection coated.
Claim 19
Dependent Claim
43 words
A method according to claim 14 wherein the separation between the output coupler of the VCSEL an the input facet of the SOA is sufficiently small so that the free spectral range of the etalon thus created is more than about ten nanometers.
Claim 20
Dependent Claim
59 words
An assembly comprising: a VCSEL; a SOA; the output coupler of the VCSEL being butt-coupled to the input facet of the SOA, wherein the output facet of the SOA is angled with respect to the input facet of the SOA, and the input facet of the SOA is anti-reflection coated so as to prevent excessive feedback to the VCSEL.
Claim 21
Dependent Claim
59 words
An assembly comprising: a VCSEL; a SOA; the output coupler of the VCSEL being butt-coupled to the input facet of the SOA, wherein the output facet of the SOA is angled with respect to the input facet of the SOA, and the input facet of the SOA is anti-reflection coated so as to prevent excessive feedback to the VCSEL.
Claim 22
Dependent Claim
17 words
An assembly according to claim 17 wherein the output facet of the SOA is also anti-reflection coated.
Claim 23
Dependent Claim
43 words
An assembly according to claim 17 wherein the separation between the output coupler of the VCSEL and the input facet of the SOA is sufficiently small so that the free spectral range of the etalon thus created is more than about ten nanometers.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2007-08-10 | 2008-02-09 | 2008-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-08-10 | 2012-02-09 | 2012-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-08-10 | 2016-02-09 | 2016-08-10 | $7700.00 | Window Closed / Lapsed |