Optical wavelength shifting

Details Optical wavelength shifting Optical wavelength shifting

2006-07-25

2006-07-25

Lee, John D. (Department: 2874)

Optical: systems and elements

Optical frequency converter

Dielectric optical waveguide type

C359S326000, C372S043010

Reexamination Certificate

active

07081985

ABSTRACT:
An apparatus (8, 14) for wavelength shifting light from a first frequency ν1to a second frequency ν2is provided in the form of a semiconductor intersubband laser (8) lasing at its intersubband frequency ν3. The output light is wavelength shifted to a frequency ν2=ν1+nν3, where n is a non-zero integer ( . . . , −2, −1, 1, 2, . . . ). The wavelength shifted light ν2may be amplitude modulated and/or frequency modulated to impart information upon it. The wavelength shifting is a coherent process allowing for the possibility of coherent communication techniques to be used.

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