Journal ArticleDOI
Laser noise in fiber‐optic interferometer systems
TLDR
In this article, the amplitude stability of single-mode channeled-substrate planar diode laser has been measured as a function of frequency (100 Hz-1 MHz) and driving current.Abstract:
The amplitude stability of single‐mode channeled‐substrate planar diode lasers has been measured as a function of frequency (100 Hz–1 MHz) and driving current. The relative noise spectrum showed a decrease with increasing frequency and an overall reduction at all frequencies as the output power of the laser was increased. These results are compared with similar measurements of the most stable commercial single‐mode HeNe lasers. The problems of laser amplitude noise in fiber‐optic sensor systems is briefly discussed.read more
Citations
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Journal ArticleDOI
Optical fiber sensor technology
Thomas G. Giallorenzi,Joseph A. Bucaro,Anthony Dandridge,G. H. Sigel,J. H. Cole,Scott C. Rashleigh,R. Priest +6 more
TL;DR: The current state of the art of optical fiber sensors is reviewed, the principles of operation are detailed and the various types of fiber sensors are outlined.
Journal ArticleDOI
Homodyne demodulation scheme for fiber optic sensors using phase generated carrier
TL;DR: In this paper, a phase generated carrier is used to detect phase shifts in the microradian range, which obviates the phase tracker resetting problem encountered in active homodyne detection schemes.
Journal ArticleDOI
Homodyne Demodulation Scheme for Fiber Optic Sensors Using Phase Generated Carrier
TL;DR: In this article, a phase generated carrier is used to detect phase shifts in the microradian range, which obviates the phase tracker resetting problem encountered in active homodyne detection schemes.
Book
Semiconductor-Laser Physics
TL;DR: In this paper, the authors present a theoretical analysis of the free-carrier theory of the laser and the Coulomb effect in terms of band mixing and strain in Quantum Wells.
Journal ArticleDOI
Monomode optical fibre interferometers for precision measurement
TL;DR: In this article, the design and performance of fiber optic interferometric sensors optimized for specific periodic and quasi-steady state measurands such as rotation, magnetic field, temperature, etc., are described.
References
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Journal Article
Measurement of small phase shifts using a single-mode optical-fiber interferometer
TL;DR: In this paper, periodic phase changes in the 10−6 -rad region were induced and detected in a single-mode all-fiber Mach-Zehnder interferometer by stretching the fiber with a piezoelectric cylinder driven at frequencies between 40 and 10−4 Hz.
Journal ArticleDOI
Measurement of small phase shifts using a single-mode optical-fiber interferometer.
TL;DR: Periodic phase changes in the 10(-6) -rad region have been induced and detected in a single-mode all-fiber Mach- Zehnder interferometer by stretching the fiber with a piezoelectric cylinder driven at frequencies between 40 and 10(4) Hz.
Journal ArticleDOI
Injection laser characteristics due to reflected optical power
T. Kanada,K. Nawata +1 more
TL;DR: In this paper, the authors investigated the effect of light reflected from an optical system on injection laser output intensity and spectrum, and showed that reflected light from a near-field region causes power deviation and an oscillating wavelength shift.
Journal ArticleDOI
Light-scattering heterodyne interferometer for vibration measurements in auditory organs
TL;DR: An interferometric optical heterodyne technique has been developed especially for vibrational amplitude and phase measurements on auditory organs of live animals.