MY165534A - All fiber based diaphragm-less optical microphone - Google Patents
All fiber based diaphragm-less optical microphoneInfo
- Publication number
- MY165534A MY165534A MYPI2013003189A MYPI2013003189A MY165534A MY 165534 A MY165534 A MY 165534A MY PI2013003189 A MYPI2013003189 A MY PI2013003189A MY PI2013003189 A MYPI2013003189 A MY PI2013003189A MY 165534 A MY165534 A MY 165534A
- Authority
- MY
- Malaysia
- Prior art keywords
- fibre
- smf
- optical microphone
- channels
- jacket
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
- H04R23/008—Transducers other than those covered by groups H04R9/00 - H04R21/00 using optical signals for detecting or generating sound
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2410/00—Microphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Acoustics & Sound (AREA)
- Lasers (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
AN ALL FIBRE BASED OPTICAL MICROPHONE WITH DUAL WAVELENGTH FIBRE LASER AND FIBRE LASER DYNAMICS OPERATING PRINCIPLES IS FABRICATED ACCORDING TO THE PRESENT INVENTION TO SETTLE THE DIFFICULTY OF SOUND SENSING USING OPTICAL FIBRE WITHOUT ANY INTERMEDIATE OR DIAPHRAGM. THE OPTICAL MICROPHONE DEVELOPED ACCORDING TO THE PRESENT INVENTION CONSISTS OF A SINGLE MODE FIBRE (SMF), A 980 NM LASER DIODE, A WAVELENGTH DIVISION MULTIPLEXER (WDM), A SINGLE CHANNEL SMF OUTPUT, AN ERBIUM DOPED FIBRE (EDF), A 1 X 16 ARRAYED WAVEGUIDE GRATINGS (AWG) WITH 16 CHANNELS (SMF) OUTPUT (WITH JACKET) AND 2 CHANNELS SMF (WITHOUT JACKET) CONNECTED TO THE CHOSEN CHANNELS AS ACOUSTIC WAVES SENSING ELEMENT. THE OPTICAL MICROPHONE CAN BE USED UNDER HARSH ENVIRONMENT SUCH AS HIGH ELECTROMAGNETIC INTERFERENCE ESPECIALLY FOR MEDICAL INSTRUMENTS LIKE MAGNETIC RESONANCE IMAGING (MRI) AND ABLE TO BEND INTO ANY SENSOR SHAPE TO FIT IN TO ANY POSITION. THE OPTICAL MICROPHONE ALSO CAN BE USED AS HYDROPHONE AS IT FUNCTIONS NORMALLY EVEN UNDER WATER.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI2013003189A MY165534A (en) | 2013-08-30 | 2013-08-30 | All fiber based diaphragm-less optical microphone |
PCT/MY2014/000205 WO2015030569A1 (en) | 2013-08-30 | 2014-06-27 | All fibre based diaphragm-less optical microphone |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI2013003189A MY165534A (en) | 2013-08-30 | 2013-08-30 | All fiber based diaphragm-less optical microphone |
Publications (1)
Publication Number | Publication Date |
---|---|
MY165534A true MY165534A (en) | 2018-04-02 |
Family
ID=52587011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI2013003189A MY165534A (en) | 2013-08-30 | 2013-08-30 | All fiber based diaphragm-less optical microphone |
Country Status (2)
Country | Link |
---|---|
MY (1) | MY165534A (en) |
WO (1) | WO2015030569A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112161931B (en) * | 2020-09-04 | 2022-02-15 | 大连理工大学 | High-sensitivity optical fiber photoacoustic gas detection system and method |
WO2022186783A1 (en) | 2021-03-05 | 2022-09-09 | Univerza V Ljubljani | A fast and highly sensitive reflective fiber-optic hydrophone |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9026588D0 (en) * | 1990-12-06 | 1991-04-24 | Marconi Gec Ltd | Improvements relating to optical sensing systems |
JPH0964819A (en) * | 1995-08-23 | 1997-03-07 | Fujitsu Ltd | Optical system |
WO2008045274A2 (en) * | 2006-10-05 | 2008-04-17 | Delaware State University Foundation, Inc. | Fiber optics sound detector |
-
2013
- 2013-08-30 MY MYPI2013003189A patent/MY165534A/en unknown
-
2014
- 2014-06-27 WO PCT/MY2014/000205 patent/WO2015030569A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2015030569A1 (en) | 2015-03-05 |
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