Southwest Sciences Inc

Discrete Wavelength-Locked External Cavity Laser

U. S. Patent 6,914,917, issued July 5, 2005

External cavity diode lasers can be tuned across a wide spectral range, enabling their use for applications such as spare lasers in wavelength-division-multiplexed (WDM) communications systems. Usually the external cavity dominates the tuning properties of the laser. In this invention, the internal cavity of the diode laser itself is exploited to create a "comb" of possible operating wavelengths spaced by the free-spectral-range of the diode laser. By cutting the diode laser to the appropriate length, this spacing can be made to conform to the standard ITU wavelength grid. In addition, it is possible to determine if the laser is operating at a single frequency by monitoring the voltage across the diode or the optical power emitted by the laser.

Contact Information

Southwest Sciences, Inc.
1570 Pacheco St., Suite E-11, Santa Fe, NM 87505
tel. (505) 984-1322/ fax (505) 988-9230



[Home]   [Meet Our People]   [Products&Services]   [Research]   [Technology]   [Commercial Partnerships]   [News]  [Contact]