Optical: systems and elements – Optical frequency converter – Dielectric optical waveguide type
Reexamination Certificate
2006-08-22
2006-08-22
Lee, John D. (Department: 2874)
Optical: systems and elements
Optical frequency converter
Dielectric optical waveguide type
C359S326000
Reexamination Certificate
active
07095551
ABSTRACT:
A wavelength converter for generating a wavelength tunable laser optical source in itself is disclosed. The wavelength converter includes a first semiconductor optical amplifier for generating an optical noise, generating and outputting a first optical source by amplifying the generated optical noise if an external current is applied, first and second distributed Bragg reflectors for reflecting only a component of a specified wavelength range among components of the optical noise and applying the reflected component to the first semiconductor optical amplifier, and a second semiconductor optical amplifier for receiving an optical source divided from the optical source reflected by and outputted from the first distributed Bragg reflector and an input data optical source, generating and outputting a second optical source by changing a phase of the divided optical source according to a digital signal from the input data optical source. The first and second optical sources outputted from the first and second semiconductor optical amplifiers are added together, and a signal of which the wavelength is converted through either a constructive interference or a destructive interference of the added first and second optical sources is outputted.
REFERENCES:
patent: 5946129 (1999-08-01), Xu et al.
patent: 6046841 (2000-04-01), Mahgerefteh et al.
patent: 6608715 (2003-08-01), Zhang et al.
patent: 6704138 (2004-03-01), Dijaili et al.
Kim Hyun-chin
Park Keun-joo
Rhee June-koo
Ryu Hyun-surk
Seo Young-kwang
Lee John D.
Sughrue & Mion, PLLC
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