Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-06-06
2009-12-29
Peng, Charlie (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S004000, C385S005000, C385S011000, C385S013000, C385S014000, C385S015000, C385S016000, C385S017000, C385S018000, C385S019000, C385S020000, C385S021000, C385S022000, C385S023000, C385S024000, C385S027000, C385S030000, C385S031000, C385S033000, C385S039000, C385S040000, C385S050000, C385S051000, C385S052000, C398S068000, C398S079000, C398S085000, C398S176000, C359S237000, C359S276000, C359S278000, C359S284000, C359S285000, C359S286000, C359S287000, C359S288000, C359S289000, C359S308000, C359S590000, C372S
Reexamination Certificate
active
07639910
ABSTRACT:
An optical module is configured with a combination of a single-mode oscillating light source and an optical filter. In this optical module, the single-mode oscillating light source outputs a single-mode, frequency-modulated signal. Further, the optical filter converts the frequency modulation to an amplitude modulation. And, the single-mode oscillating light source and the optical filter are packaged without active alignment on the same substrate. Accordingly, it is possible to realize an optical module in a simple and low-cost configuration by packaging the single-mode oscillating light source and the optical filter by passive alignment, without active alignment, on the same substrate, and by using a simple optical filter such as a waveguide ring resonator, which converts a frequency modulation to an amplitude modulation.
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Hatanaka Takaaki
Yamazaki Hiroyuki
Lam Hung
NEC Corporation
Peng Charlie
Sughrue & Mion, PLLC
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