Fiber optic telecommunications card with security detection
DC CAFC- US 8,374,511 B2
- Filed: 11/04/2009
- Issued: 02/12/2013
- Est. Priority Date: 07/09/2001
- Status: Expired due to Term
First Claim
Patent Images
1. A method for operating an optical fiber multiplexor comprising:
- feeding input data to a controller of a transmitter of a telecommunications box, the telecommunications box having an electronic data input for the input data and an electronic data output;
using the controller, controlling a modulator to modulate light from a laser as a function of the input data;
sending the modulated light as an optical signal from the transmitter over an optical fiber;
receiving the optical signals from the optical fiber at a receiver of a further telecommunications box and converting the optical signals to electronic output data;
passing the optical signals to a photodetector to produce an electric signal; and
filtering the electrical signal to produce an average optical power.
3 Assignments
Litigations
2 Petitions
Accused Products
Abstract
A transceiver card for a telecommunications box for transmitting data over a first optical fiber and receiving data over a second optical fiber. The card has transmitter for transmitting data over the first optical fiber, the transmitter having a laser and a modulator, a fiber output optically connected to the laser for connecting the first optical fiber to the card, a fiber input for connecting the second optical fiber to the card, a receiver optically connected to the fiber input for receiving data from the second optical fiber, and an OTDR optically connected between the transmitter and the fiber output or between the receiver and the fiber input. An energy level detector is also provided between the receiver and the fiber input.
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Citations
16 Claims
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1. A method for operating an optical fiber multiplexor comprising:
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feeding input data to a controller of a transmitter of a telecommunications box, the telecommunications box having an electronic data input for the input data and an electronic data output; using the controller, controlling a modulator to modulate light from a laser as a function of the input data; sending the modulated light as an optical signal from the transmitter over an optical fiber; receiving the optical signals from the optical fiber at a receiver of a further telecommunications box and converting the optical signals to electronic output data; passing the optical signals to a photodetector to produce an electric signal; and filtering the electrical signal to produce an average optical power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for operating an optical fiber multiplexor in a phase modulation mode comprising:
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feeding input data to a controller of a transmitter of a telecommunications box, the telecommunications box having an electronic data input for the input data and an electronic data output; using the controller, controlling a modulator to phase modulate light from a laser as a function of the input data; sending the modulated light as an optical signal from the transmitter over an optical fiber; receiving the optical signals from the optical fiber at a receiver of a further telecommunications box and converting the optical signals to electronic output data; passing the phase-modulated optical signals to a photodetector to produce an electric signal; and filtering the electrical signal to produce an average optical power. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification
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Litigation Data
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Current AssigneeOyster Optics, LLC
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Original AssigneeTQ Gamma LLC (Techquity Capital Management, LLC)
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InventorsSnawerdt, Peter
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Primary Examiner(s)TRAN, DZUNG D
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Application NumberUS12/590,185
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Publication Number
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Time in Patent Office1,196 Days
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Field of Search398150-152, 398163-164, 398183-186, 398/135
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US Class Current398/164
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CPC Class CodesH04B 10/071 using a reflected signal, e...H04B 10/07955 Monitoring or measuring powerH04B 10/85 Protection from unauthorise...
