TITLE

Fringe counting method for synthetic phase with frequency-modulated laser diodes

AUTHOR(S)
Onodera, Ribun; Sakuyama, Munechika; Ishii, Yukihiro
PUB. DATE
September 2007
SOURCE
Review of Scientific Instruments;Sep2007, Vol. 78 Issue 9, p093104
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Fringe counting method with laser diodes (LDs) for displacement measurement has been constructed. Two LDs are frequency modulated by mutually inverted sawtooth currents on an unbalanced two-beam interferometer. The mutually inverted sawtooth-current modulation of LDs produces interference fringe signals with opposite signs for respective wavelengths. The two fringe signals are fed to an electronic mixer to produce a synthetic fringe signal with a reduced sensitivity to the synthetic wavelength. Synthetic fringe pulses derived from the synthetic fringe signal make a fringe counting system possible for faster movement of the tested mirror.
ACCESSION #
27002858

 

Related Articles

  • An Interferometric Based Optical Read-Out Scheme For The LISA Proof-Mass. Aston, Stuart M.; Speake, Clive C. // AIP Conference Proceedings;2006, Vol. 873 Issue 1, p326 

    We discuss a polarisation-based homodyne interferometer under development at the University of Birmingham that has shown promising sensitivities down to 10-4 Hz. A compact interferometer, measuring 87 × 40 × 25 mm, has been fabricated that employs a VCSEL laser diode source operating at...

  • Phase tracker for low-finesse fibre Bragg grating Fabry-Perot interferometers. Chtcherbakov, A. A.; Swart, P. L. // Electronics Letters;1/5/2006, Vol. 42 Issue 1, p13 

    Presented is a technique for the continuous tracking of interferometer fringes. The technique uses a fringe quadrature signal to keep the state of the digital tracker in balance with the interferometer state. The quadrature signal is obtained through wavelength modulation of a semiconductor laser.

  • Period doubling and chaos in a directly modulated laser diode. Lee, Chang-Hee; Yoon, Tae-Hoon; Shin, Sang-Yung // Applied Physics Letters;Jan1985, Vol. 46 Issue 1, p95 

    It is shown theoretically that the directly modulated laser diode, with the modulation frequency of its injection current comparable to the relaxation oscillation frequency, exhibits period doubling route to chaos as the modulation index of current is increased. The effect of spontaneous...

  • Deep-level trap model of diode laser modulation: Significance of spontaneous emission and gain saturation. Bourkoff, E.; Liu, X. Y. // Journal of Applied Physics;4/15/1989, Vol. 65 Issue 8, p2912 

    Presents a study that analyzed the effects of deep-level traps on the high-speed modulation behavior of semiconductor diode lasers. Examination of dynamic rate equations for deep-level traps; Correlation between oscillation frequency and trap density; Effects of the gain saturation and...

  • GENERATION OF MICROWAVE SIGNALS FROM A LASER DIODE COUPLED TO AN EXTERNAL CAVITY. Arora, Krishna; Arora, Rajendra K. // Microwave & Optical Technology Letters;Jan89, Vol. 2 Issue 1, p13 

    This article describes a technique by which a laser diode coupled with an external cavity is used in an interferometric system resulting in a direct envelope modulation of the optical carrier. The laser output is fed to a Mach-Zehnder interferometer in which the time delay associated with the...

  • 40 Gbit/s modulation of 1550 nm VCSEL. Hofmann, W.; Müller, M.; Wolf, P.; Mutig, A.; Gründl, T.; Böhm, G.; Bimberg, D.; Amann, M.-C. // Electronics Letters;2/17/2011, Vol. 47 Issue 4, p270 

    The modulation characteristics of vertical-cavity surface-emitting lasers with a buried tunnel junction emitting in the important wavelength regime around 1.55 µm are presented. For the first time it was possible to demonstrate bit rates up to 40 Gbit/s also in this waveband. The 3 dB...

  • Fabry-Perot intensity modulator with integrated Bragg reflectors in Ti:LiNbO3. Kim, R.; Zhang, J.; Eknoyan, O.; Taylor, H. F.; Smith, T. L. // Electronics Letters;10/27/2005, Vol. 41 Issue 22, p1220 

    A Fabry-Perot electro-optic intensity modulator in Ti:LiNbO3 utilising surface integrated Bragg reflectors is demonstrated. A modulation depth of 96% at 1542 nm wavelength is obtained, with a voltage-length product value which is a factor of 4.4 smaller than for a polarisation intensity...

  • A Fabry–Pérot electro-optic sensing system using a drive-current-tuned wavelength laser diode. Wen-Kai Kuo; Pei-Yu Wu; Chang-Ching Lee // Review of Scientific Instruments;May2010, Vol. 81 Issue 5, p053107 

    A Fabry–Pérot enhanced electro-optic sensing system that utilizes a drive-current-tuned wavelength laser diode is presented. An electro-optic prober made of LiNbO3 crystal with an asymmetric Fabry–Pérot cavity is used in this system. To lock the wavelength of the laser diode...

  • Chirped ladder-type interferometric filter for widely tunable laser diode. Jeong, S.-H.; Matsuo, S.; Yoshikuni, Y.; Segawa, T.; Ohiso, Y.; Suzuki, H. // Electronics Letters;8/5/2004, Vol. 40 Issue 16, p990 

    A dominant passband response has been achieved by chirping a ladder-type interferometric filter. This response is indispensable for obtaining a single lasing wavelength in a widely tunable laser diode employing a ladder-type filter. Chirping the device is not accompanied by any excess loss nor...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics