Optical waveguides – With optical coupler – Plural
Patent
1998-08-11
2000-12-12
Ngo, Hung N.
Optical waveguides
With optical coupler
Plural
385 48, 385 46, G02B 626
Patent
active
061609307
ABSTRACT:
The optical hold unit (100) of the present invention includes an optical modulator (108) that has an electrical input, an optical input, and an optical output. A 1.times.N optical splitter (106) is also provided that has an optical input and N optical outputs. In addition, N optical paths (112) are individually coupled to the N optical outputs and carry one of the N output signals. Each optical path has an associated propagation delay. Optical delay elements may be located in any of the N optical paths that carry the output signals. The optical delay elements serve to lengthen the propagation delay (114a-e) of the optical path (112a-e) in which the optical delay element is located. In an alternative embodiment, the optical hold unit (200) includes an optical modulator (108) that has an electrical input, an optical input, and an optical output. An optical resonator (202) is also provided and connected to the optical output of the modulator (108). The optical resonator (202) also includes a partially transmissive output (222) to which an optical path is connected. The optical resonator (202) may also include a gain medium (208) or an optical switch (210).
REFERENCES:
patent: 5109449 (1992-04-01), Newberg et al.
patent: 5367586 (1994-11-01), Glance et al.
patent: 5793907 (1998-08-01), Jalali et al.
patent: 5991068 (1999-11-01), Massicott et al.
Ferguson Bruce A.
Fields Richard A.
Kintis Mark
Kunkee Elizabeth T.
Lembo Lawrence J.
Ngo Hung N.
TRW Inc.
Yatsko Michael S.
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