#Optical isolator assumption full
239000000463 material Substances 0.000 claims abstract description 94 This circuit enables the full galvanic isolation of sound frequency signals with optical transmission in excellent quality, eliminating interference.230000003287 optical Effects 0.000 title claims abstract description 148.Assignors: AZIMI, MASUD, KNOPP, KEVIN J., RHODES, GREGORY VANDER, VAKHSHOORI, DARYOOSH, WANG, PEIDONG Application granted granted Critical Publication of US7057791B2 publication Critical patent/US7057791B2/en Status Expired - Fee Related legal-status Critical Current Anticipated expiration legal-status Critical Links 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 US45422303P priority Critical Application filed by Masud Azimi, Daryoosh Vakhshoori, Knopp Kevin J., Rhodes Gregory Vander, Peidong Wang filed Critical Masud Azimi Priority to US10/802,069 priority patent/US7057791B2/en Publication of US20040240031A1 publication Critical patent/US20040240031A1/en Assigned to AHURA CORPORATION reassignment AHURA CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). To optimize their functions, organic or polymersbase optocouplers should be designed to transfer electrical signals by using light waves to provide coupling with electrical isolation between its input and output. Rhodes Gregory Vander Peidong Wang Priority date (The priority date is an assumption and is not a legal conclusion. The organic optocouplers (also called organic optical isolators ) are polymer-based electronic passive optical components able to combine or split transmission data (optical power) from polymeric optical fibers. Original Assignee Masud Azimi Daryoosh Vakhshoori Knopp Kevin J. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Masud Azimi Daryoosh Vakhshoori Kevin Knopp Gregory Rhodes Peidong Wang 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.) Granted Application number US10/802,069 Other versions US7057791B2 Google Patents US20040240031A1 - Compact multipass optical isolator Figure 7-4.US20040240031A1 - Compact multipass optical isolator
The key specifications of an optical isolator are the insertion loss, the return loss, and the reverse isolation of the device. An optical isolator is a nonreciprocal device that transmits an optical wave in one direction but blocks it in the reverse direction much as the function of a diode in an electric circuit. Optical isolators are needed to avoid such problems. Sometimes the problem is so severe that it renders the entire system useless. A feedback to a photodetector or other parts of an optical system also has many undesirable effects. An optical isolator is a nonreciprocal device that transmits an optical wave in one direction but blocks it in the reverse direction much as the function of a diode in an electric circuit. It can change the laser frequency, increase the laser noise, create fluctuations in the laser intensity, lock the laser to a different mode of operation, or drive the laser into instability, even chaos. A feedback, even at an extremely low level, to a laser usually has a significant effect on the laser characteristics. In an optical system, reflections and backscattering of light often cause serious problems ranging from noise in the photodetectors to instabilities in the light sources. This is continuation from the previous tutorial - magneto-optic Kerr effect.
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