Optical module and method of packaging the same

Optical waveguides – With optical coupler – Input/output coupler

Reexamination Certificate

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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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