Patent ID: 7212331
Filing Date: 2007-05-01
Classification: G02F,H01S

Abstract:
1. A reciprocating optical modulator comprising: a continuous light path configured to amplify a signal; an optical modulator positioned on the light path; a first optical band-pass filter and a second optical band-pass filter positioned on the input side and output side of the optical modulator, respectively; and an exciting light source configured to introduce light to excite the light path; said optical modulator, said first and second optical band-pass filters, and said exciting light source being disposed on the light path as formed in a single optical crystal or in a multiplicity of optical crystals, said first optical band-pass filter configured to admit incident light and to reflect modulated incident light, said second optical band-pass filter configured to reflect the incident light and the modulated incident light; and a third optical band-pass filter disposed between the optical modulator and the second optical band-pass filter, the third optical band-pass filter configured to remove the incident light.