The present invention provides a continuously tunable external cavity laser (ECL) with a compact form factor and precise tuning to a selected center wavelength of a selected wavelength grid. The ECL may thus be utilized in telecom applications to generate the center wavelengths for any channel on the...http://www.google.com/patents/US6600760?utm_source=gb-gplus-sharePatent US6600760 - Method and apparatus for tuning a laser