APPARATUS AND METHOD FOR CHEMICAL, BIOLOGICAL AND RADIOLOGICAL AGENT SENSING

• US 20120224167A1
• Filed: 07/18/2007
• Published: 09/06/2012
• Est. Priority Date: 07/18/2007
• Status: Abandoned Application

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Sanders, Glen A., Koehler, David R.
• Application Number:
  US11/779,550
• Publication Number:
  US 20120224167A1
• Time in Patent Office: Days
• US Class Current: 356/73.1
• CPC Class Codes: G01N 2021/7716 in cladding
• CPC Class Codes: G01N 2021/7776 Index
• CPC Class Codes: G01N 2021/7793 Sensor comprising plural indicators
• CPC Class Codes: G01N 21/39 using tunable lasers
• CPC Class Codes: G01N 21/7746 the waveguide coupled to a cavity resonator
• CPC Class Codes: G02B 2006/12061 Silicon
• CPC Class Codes: G02B 2006/12097 Ridge, rib or the like
• CPC Class Codes: G02B 2006/12138 Sensor

Abstract

Apparatus and method for chemical, biological and radiological agent sensing. The sensing apparatus includes a plurality of resonators each having a resonance frequency and an optical fiber coil. The optical fiber coils have cladding and an indicator embedded in the cladding that reacts to an agent (chemical or biological substance) or a dopant that darkens with radiation. The resonator circulates light through the coil and produces a resonance shape centered at the resonance frequency and measured via the input light. A predetermined change in the resonance shape indicates a presence of the agent in the environment.

Claims

1. (canceled)

2. (canceled)

8. An apparatus for sensing one or more agents in an environment, the apparatus comprising:

a light source configured to produce a first light beam;

a controller capable of changing the path of said first light beam based on an electrical signal, the controller comprising;

a first reflector in optical communication with the light source;

a reflector controller configured to control orientation of said first reflector;

a first receiving reflector capable of receiving light from said first reflector when said first reflector is oriented in a first predetermined orientation; and

a second receiving reflector capable of receiving light from said first reflector when said first reflector is oriented in a second predetermined orientation,

wherein the first and second receiving reflectors are capable of receiving light from the first and second resonators, respectively;

a first optical resonator and a second optical resonator each capable of receiving light from said controller, said first and second optical resonators each comprising an optical fiber coil, said first and second optical resonators each configured to circulate a resonator light beam when said light is received from said controller;

at least one photodetector in optical communication with said first and second optical resonators; and

a processor in signal communication with the at least one photodetector and said controller, the processor configured to determine if one of one or more agents are present in the environment based on signals received from the at least one photodetector.

9. The apparatus of claim 8, wherein the controller comprises a mechanical actuator, wherein said first reflector is at least one of mounted on, or formed on said mechanical actuator that mechanically controls orientation of said first reflector based on a control signal received from the reflector controller.

10. The apparatus of claim 9, wherein said optical fiber coil of said first optical resonator comprises a first cladding and a first indicator embedded in the first cladding, the first indicator configured to react to a first agent of two or more agents, and wherein said optical fiber coil of said second resonator comprises a second cladding and a second indicator embedded in the second cladding, the second indicator configured to react to a second agent of the two or more agents.

11. The apparatus of claim 9, wherein said optical fiber coil of said first optical resonator comprises at least one of a dopant or a substance configured to darken when subjected to nuclear radiation, or an indicator that reacts to a chemical or biological agent.

12. The apparatus of claim 9, wherein the controller comprises:

at least one more receiving reflector capable of receiving light from said first reflector when said first reflector is oriented in a predetermined orientation different than said first and second predetermined orientations; and

a third optical resonator that is different than said first and second optical resonators, the third optical resonator capable of receiving light from said at least one more receiving reflector.

13. The apparatus of claim 12, wherein said optical fiber coil of said first optical resonator comprises at least one of a dopant or a substance configured to darken when subjected to nuclear radiation.

14. The apparatus of claim 8, wherein said controller includes:

a second reflector in optical communication with the at least one photodetector;

a second reflector controller configured to control orientation of said second reflector;

a first resonator output reflector capable of transmitting light to said second reflector when said second reflector is oriented in a first predetermined orientation; and

a second resonator output reflector capable of transmitting light to said second reflector when said second reflector is oriented in a second predetermined orientation,

wherein said first and second resonators are capable of being in optical communication with said first and second resonator output reflectors, respectively.

15. The apparatus of claim 14, further comprising a mechanical actuator wherein said second reflector is at least one of mounted on, or formed on, said mechanical actuator configured to mechanically control orientation of said second reflector based on a control signal received from said second reflector controller.

16. The apparatus of claim 15, wherein said optical fiber coil of said first optical resonator comprises a first cladding and a first indicator embedded in the first cladding, the first indicator configured to react to a first agent of two or more agents, and wherein said optical fiber coil of said second resonator comprises a second cladding and a second indicator embedded in the second cladding, the second indicator configured to react to a second agent of the two or more agents.

17. The apparatus of claim 15, further comprising:

at least one more receiving reflector capable of receiving light from said first reflector when said first reflector is oriented in a predetermined orientation different than said first and second predetermined orientations; and

a third optical resonator that is different than said first and second optical resonators, the third optical resonator being capable of receiving light from said at least one more receiving reflector.

18. The apparatus of claim 17, wherein said optical fiber coil of said first optical resonator comprises at least one of a dopant or a substance configured to darken when subjected to nuclear radiation, or an indicator that reacts to a chemical or biological agent.

19. The apparatus of claim 14, wherein said optical fiber coil of said first optical resonator comprises at least one of a dopant or a substance configured to darken when subjected to nuclear radiation, or an indicator that reacts to a chemical or biological agent.

24. (canceled)

26. An apparatus comprising:

a light source configured to produce a first light beam;

a controller capable of changing the path of said first light beam based on an electrical signal, said controller including a first waveguide, a first receiving waveguide, and a second receiving waveguide;

a first optical resonator and a second optical resonator each capable of receiving light from said controller, said first and second optical resonators each comprising an optical fiber coil, said first and second optical resonators each configured to circulate a resonator light beam when said light is received from said controller;

at least one photodetector in optical communication with said first and second optical resonators; and

a processor in signal communication with the at least one photodetector and said controller, the processor configured to determine if one of one or more agents are present in the environment based on signals received from the at least one photodetector;

wherein the controller is configured to control position of said first waveguide, said first receiving waveguide capable of receiving light from said first waveguide when said first waveguide is positioned in a first predetermined position by the controller, and said second receiving waveguide capable of receiving light from said first waveguide when said first waveguide is positioned in a second predetermined position by the controller.

3. The apparatus of claim 26, wherein said controller includes a mechanical actuator, said first waveguide is at least one of mounted on, or formed on, the mechanical actuator configured to mechanically control position of said first waveguide based on a control signal.

4. The apparatus of claim 3, wherein said first optical fiber coil of said first resonator comprises a first cladding and a first indicator embedded in the first cladding, the first indicator configured to react to a first agent of two or more agents, and wherein said second optical fiber coil of said second resonator comprises a second cladding and a second indicator embedded in the second cladding, the second indicator configured to react to a second agent of the two or more agents.

5. The apparatus of claim 26, further comprising:

at least one more receiving waveguide capable of receiving light from said first waveguide when said first waveguide is positioned in a predetermined position different than said first and second predetermined positions; and

a third resonator that is different than said first and second resonators, the third resonator being in optical communication with said at least one more receiving waveguide.

6. The apparatus of claim 5, wherein said optical fiber coil of said first resonator comprises at least one of a dopant or a substance configured to darken when subjected to nuclear radiation, or an indicator that reacts to a chemical or biological agent.

7. The apparatus of claim 26, wherein said optical fiber coil of said first resonator comprises at least one of a dopant or a substance configured to darken when subjected to nuclear radiation, or an indicator that reacts to a chemical or biological agent.

20. The apparatus of claim 26, further comprising:

a second waveguide in optical communication with the at least one photodetector;

a second controller configured to control position of said second waveguide;

a first resonator output waveguide capable of transmitting light to said second waveguide when said second waveguide is positioned in a first predetermined position by the second controller; and

a second resonator output waveguide capable of transmitting light to said second waveguide when said second waveguide is positioned in a second predetermined position by the second controller,

wherein said first and second optical resonators are capable of being in optical communication with said first and second resonator output waveguides respectively.

21. The apparatus of claim 20, wherein said controller includes a mechanical actuator, said first waveguide is at least one of mounted on, or formed on said mechanical actuator that mechanically controls position of said first waveguide based on a control signal.

22. The apparatus of claim 21, wherein said optical fiber coil of said first optical resonator comprises a first cladding and a first indicator embedded in the first cladding, the first indicator configured to react to a first agent of two or more agents, and wherein said optical fiber coil of said second resonator comprises a second cladding and a second indicator embedded in the second cladding, the second indicator configured to react to a second agent of the two or more agents.

23. The apparatus of claim 21, further comprising:

at least one more receiving waveguide capable of receiving light from said first waveguide when said first waveguide is positioned in a predetermined position different than said first and second predetermined positions; and

a third optical resonator that is different than said first and second optical resonators, the third optical resonator capable of receiving light from said at least one more receiving waveguide.

25. The apparatus of claim 21, wherein said optical fiber coil of said first optical resonator comprises at least one of a dopant or a substance configured to darken when subjected to nuclear radiation.