Basic parameters to be considered for selecting isolator are insertion loss and isolation. Hence it improves the performance of amplifier and other optical components. Our optical isolator will provide protection again laser instabilities yielding poor machining results and laser damage eliminating the cost of replacing the laser and down time on the manufacturing floor. Optical isolators are employed at the amplifier/laser output which helps prevent light reflections to enter these optical devices backwards. The optical isolator that we will develop will enable higher performance in the laser processing field. We will also provide a path to a 100-kW optical isolator. They are usually used in optical applications that require stable single optical frequency and low optical noise. In this SBIR program, a kW-level optical isolator will be designed a prototyped suitable for an ultrafast laser system. Optical isolators are used in many applications in optical systems across industries, including telecommunication, optical fiber communication, health care, and laboratories. We will use a different geometry with aggressive cooling to mitigate thermal effects. This leads to the formation of a thermal lens and stress-induced birefringence in the media that limits the power handling of the isolator. The standard geometry that is used for optical isolators consists of rods that are cooled at their cylindrical surfaces. As lasers of ever higher powers are being deployed in applications such as laser processing, there is a need to scale the power handling of optical isolators as well.
Anticipated expiration legal-status Critical Status Ceased legal-status Critical Current Links An optical isolator is a passive magneto-optic device that only allows light to travel in one direction. Assignors: PAN, JING-JONG Application granted granted Critical Publication of US5208876A publication Critical patent/US5208876A/en Assigned to JDS UNIPHASE CORPORATION reassignment JDS UNIPHASE CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by E Tek Dynamics Inc filed Critical E Tek Dynamics Inc Priority to US07/786,434 priority Critical patent/US5208876A/en Assigned to E-TEK DYNAMICS, INC. Original Assignee E Tek Dynamics 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.) Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Ceased Application number US07/786,434 Inventor Jing-Jong Pan Current Assignee (The listed assignees may be inaccurate.
Uses for an optical isolator pdf#
Google Patents US5208876A - Optical isolatorĭownload PDF Info Publication number US5208876A US5208876A US07/786,434 US78643491A US5208876A US 5208876 A US5208876 A US 5208876A US 78643491 A US78643491 A US 78643491A US 5208876 A US5208876 A US 5208876A Authority US United States Prior art keywords grin lens optical fiber end surfaces polarizer optical Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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