Erin Sahinci

A new algorithm on PMD pulse-width compression

Summary An algorithm on PMD pulse-width compression is proposed. The new algorithm is more efficient than some recent result and is guaranteed to be globally convergent. Also all iteration points are feasible Jones vectors. These properties are important since in many situations, PMD control needs to be implemented in real time.

Evaluation on fiber boot of optical component by bend radius measurement in side pull test

A novel test methodology is established to evaluate the strain relief boot on optoelectronic components and optical fiber components by measuring the fiber bend radius in side pull test. The technique is developed for qualifying the boot design rather than for lot testing. The criterion and process are provided.

Analysis on the effects of fiber end face scratches on return loss performance of optical fiber connectors

This paper introduces a novel model for analyzing the optical interface performance degradation due to scratches on optical fiber end face. The model indicates that the contribution to the return loss (RL) of a scratch is determined by its size, location, and its relative reflectivity, which is defined as the ratio of the average reflectivity of the scratch to the base reflectivity of the defectless end face. Based on this new model, the effects on RL are analyzed for scratches of various numbers, different sizes, with different relative reflectivities, and at different locations. This quantified analysis provides a solid base to establish the specifications of inspection criteria of optical fiber connectors. With the new model, the relative reflectivity of a scratch was tested, and estimations of the RL of scratched connectors were performed, which were in good agreement with measurement results.

A new optimization algorithm on pulse-width compression using polarization controls

An algorithm on pulsewidth compression is proposed. The new algorithm is efficient and is guaranteed to be globally convergent. All intermediate iteration points are feasible Jones vectors. The properties are important for real time control.

Effects of fiber endface scratches on return loss performance of optical interface

This presentation introduces a novel model for analyzing the optical interface performance degradation due to scratches on optical fiber endface. The model indicates that the contribution to the return loss of a scratch is determined by its size, location and its relative reflectivity, which is defined as the ratio of the average reflectivity of the scratch to the base reflectivity of the defectless endface. Based on this new model, the effects on return loss are analyzed for scratches of various numbers, different sizes, with different relative reflectivities, and at different locations. This quantified analysis provides a solid base to establish the specifications of inspection criteria of optical interface. With the new model, the relative reflectivity of a scratch was tested, and estimations of the return loss of scratched connectors were performed, which were in good agreement with measurement results.