CA1151277A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Method of anchoring optical fiber in the hermetic laser package
Assignee: Nortel Networks Corp
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Filing: 1981-02-11
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Granted: 1983-08-02
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Expires: 2001-02-11
Abstract
Abstract METHOD OF ANCHORING OPTICAL FIBER IN THE HERMETIC LASER PACKAGE Abstract of the Disclosure An electro-optic package incorporating a semiconductor laser requires a temperature sensor for controlling an electrically operated cooler. An optical fiber end portion is anchored close to the laser to receive light from it. Usually the fiber is anchored by a mass of cured epoxy. This invention proposes using a mass of fusible alloy which is melted and solidified using a cooler in which the polarity of drive current is reversed to convert the cooler into a heater. The temperature sensor is used to maintain the temperature in the package below the alloy melting point while the fiber is positioned. - i -
Inventors
- 👤 Tibor F. I. Kovats
- 👤 Tibor F. Devenyi
- 👤 Christopher Michael Look
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-04 22:37
CPC Classifications
H; H10; H10W; H10W90/00; G; G02; G02B; G02B6/00; G02B6/24; G02B6/42; G02B6/4201; G02B6/4202; G02B6/4219; G02B6/4236; G02B6/4238; H10H; H10H20/00; H10H20/80; H10H20/85; H10H20/8506; H10H20/858; H10H20/8584
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
56 words
An electro-optic package comprising:-a housing, a thermoelectric device within the housing and, mounted to the thermoelectric device, a light emitting source and a mass of fusible alloy, the thermoelectric device operable in one mode as a heater for melting the fusible alloy and operable in another mode as a cooler for cooling the light emitting device.
Claim 2
Dependent Claim
56 words
An electro-optic package comprising:-a housing, a thermoelectric device within the housing and, mounted to the thermoelectric device, a light emitting source and a mass of fusible alloy, the thermoelectric device operable in one mode as a heater for melting the fusible alloy and operable in another mode as a cooler for cooling the light emitting device.
Claim 3
Dependent Claim
45 words
An electro-optic package as claimed in claim 1, in which a portion of an optical fiber is anchored in said mass of fusible alloy in a position in which light emitted from the light emitting device is incident on an end surface of the fiber.
Claim 4
Dependent Claim
23 words
An electro-optic device as claimed in claim 1, in which the fusible alloy has a melting point in the range 85°C to 100°C.
Claim 5
Dependent Claim
15 words
An electro-optic package as claimed in claim 3, in which the fusible alloy contains indium.
Claim 6
Dependent Claim
30 words
An electro-optic package as claimed in claim 1, in which the light emitting device is one of the group consisting of a laser diode and a light emitting diode (LED).
Claim 7
Dependent Claim
42 words
An electro-optic package as claimed in claim 1, in which the thermoelectric device operates in said one mode when a voltage of one polarity is applied thereto and operates in the other mode when a voltage of reverse polarity is applied thereto.
Claim 8
Dependent Claim
18 words
An electro-optic device as claimed in claim 6, in which the thermoelectric device operates on the Peltier effect.
Claim 9
Dependent Claim
17 words
An electro-optic device as claimed in claim 1, in which the housing also contains a temperature sensor.
Claim 10
Dependent Claim
21 words
An electro-optic package as claimed in claim 8, in which the temperature sensor includes a thermistor contacting said thermoelectric device surface.
Claim 11
Dependent Claim
32 words
An electro-optic package as claimed in claim 8, in which the temperature sensor is one element of an electrical sensing circuit, the electrical sensing circuit having an output controlling the thermoelectric device.
Claim 12
Dependent Claim
15 words
An electro-optic package as claimed in claim 1, in which the housing is hermetically sealed.
Claim 13
Independent Claim
142 words
A method for anchoring an optical fiber in an electro-optic package housing a light emitting device, the package also housing a thermoelectric device operable in a first mode as a heater and operable in a second mode as a cooler to cool a light emitting device mounted thereon, the method comprising:-operating the thermoelectric device in said first mode and contacting the thermoelectric device with a low melting point fusible alloy to deposit molten fusible alloy on the thermoelectric device, leading one end portion of an optical fiber into the housing, manipulating the end portion to obtain a predetermined positional relationship between the fiber end surface and the light emitting device with part of the fiber end portion contacting the molten fusible alloy, and then discontinuing heating by said thermoelectric device whereby to solidify the fusible alloy and anchor the fiber end portion.
Claim 14
Independent Claim
142 words
A method for anchoring an optical fiber in an electro-optic package housing a light emitting device, the package also housing a thermoelectric device operable in a first mode as a heater and operable in a second mode as a cooler to cool a light emitting device mounted thereon, the method comprising:-operating the thermoelectric device in said first mode and contacting the thermoelectric device with a low melting point fusible alloy to deposit molten fusible alloy on the thermoelectric device, leading one end portion of an optical fiber into the housing, manipulating the end portion to obtain a predetermined positional relationship between the fiber end surface and the light emitting device with part of the fiber end portion contacting the molten fusible alloy, and then discontinuing heating by said thermoelectric device whereby to solidify the fusible alloy and anchor the fiber end portion.
References Cited (Backward Citations)
No citation records indexed.
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