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#ALTERNATIVE TO OPTICAL ISOLATOR PDF#
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The isolation originates from a nonreciprocal induced transparency based on a coherent light-sound interaction, with the coupling originating from the traveling-wave Brillouin scattering interaction, that breaks time-reversal symmetry within the waveguide-resonator system. Here we demonstrate that complete linear optical isolation can be obtained within any dielectric waveguide using only a whispering-gallery microresonator pumped by a single-frequency laser. However, none of these approaches have yet demonstrated linear optical isolation with ideal characteristics over a microscale footprint - simultaneously incorporating large contrast with ultralow forward loss - having fundamental compatibility with photonic integration in standard waveguide materials.

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The significant challenges that confront integration of magneto-optic nonreciprocal systems on chip have made imperative the exploration of magnet free alternatives.

238000002310 reflectometry Methods 0.Low-loss optical isolators and circulators are critical nonreciprocal components for signal routing and protection, but their chip-scale integration is not yet practical using standard photonics foundry processes.

230000005540 biological transmission Effects 0.000 description 3.

238000004519 manufacturing process Methods 0.000 description 4.

238000002955 isolation Methods 0.000 claims abstract description 18.

230000003287 optical Effects 0.000 title claims abstract description 44.

Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Assignors: DUCK, GARY S., CHENG, YIHAO Application granted granted Critical Publication of US5768005A publication Critical patent/US5768005A/en Assigned to JDS UNIPHASE INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHENG, YIHAO Application filed by JDS Fitel Inc filed Critical JDS Fitel Inc Priority to US08/533,837 priority patent/US5768005A/en Assigned to JDS FITEL, INC. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US08/178,838 priority Critical patent/US5471340A/en Assigned to JDS FITEL INC. Original Assignee JDS Fitel Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Duck Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US08/533,837 Inventor Yihao Cheng Gary S.

#ALTERNATIVE TO OPTICAL ISOLATOR PDF#

Google Patents Multi-stage optical isolatorĭownload PDF Info Publication number US5768005A US5768005A US08/533,837 US53383795A US5768005A US 5768005 A US5768005 A US 5768005A US 53383795 A US53383795 A US 53383795A US 5768005 A US5768005 A US 5768005A Authority US United States Prior art keywords light input isolating stage output end Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

Google Patents US5768005A - Multi-stage optical isolator US5768005A - Multi-stage optical isolator