Patent ID: 6519270
Filing Date: 2003-02-11
Classification: H01S

Abstract:
A compound cavity reflection modulation laser system for providing frequency modulation of output light generated therein, comprising:a first cavity forming a single wavelength semiconductor laser between a front laser facet and a rear laser facet, said first cavity producing interference effects of a received phase modulated light to provide modulation of the complex reflection of said rear laser facet; means for converting frequency modulation (FM) into intensity modulation (IM), said means being situated to receive output from said front facet of said laser; and a second cavity forming a phase modulation element between a front element facet and a rear element facet, said second cavity receiving light generated by said first cavity to provide said phase modulated light, said first and second cavities forming a compound cavity defined by said front laser facet and said rear element facet, wherein the modulation of said complex reflection of said rear laser facet provide frequency modulation of said output light.