Jose Luis Sirvent Supervisor: Jonathan Emery Student Meeting 24 October 2011

 1. Status  2. Contact with companies  3. Simulations with zemax  4. Comparation

 A) Initial analysis and new approaches  B) Search of new components ◦ Collimators (4), Focusers (2) ◦ Circulators (5), cables, adaptators

 C) Initial Estimations of losses ◦ Study of possible limiting effects  Fresnel, Franhouer diffraction  Interferences  Fresnel reflection  Light Coupling efficiency  Estimate maximal separations ◦ Initial comparations in terms of power coupling LOSSES (Lc)TransmissionReflectionReflection (Collimator) Fresnell Disk-Vacuum dB Fresnell Fiber-Vacuum000dB Insertion Losses ST dB Insertion Losses SMA 1*2222dB Optical Fiber1.75 dB Free Space dB Splitter 10/ dB Total Losses dB Pr0.04% 5.71%Ps

 A) Meeting with VaqTec ◦ Fibers for Vacuum ◦ Custom Lenses? ◦ Aligners XYZ and angular  B) Contact with AccuGlass ◦ Lenses & Collimators for Vacuum  Characteristics and models ◦ Fibers for Vacuum ◦ Feedthroughs

 Lensed fibers: ◦ ◦   Vacuum Optical Components: ◦   Others Factories: ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦ ◦

 1. Intro: ◦ Optical simulation software package. ◦ Simulation under geometric and physic optics approach. ◦ Simulation of fiber coupling efficiency. ◦ Interferences and diffractions ◦ Lens modeling and validation.

 3.1 Initial simulations: ◦ Transmission approach  Coupling efficiency: 0.15%  Distance limit: 1.5 mm  < Fresnell distance  Coupling 0.08%

 3.1 Initial simulations: ◦ Reflection approach  Coupling efficency: 0.27%  Distance limit: 2mm  < Fresnell distance  Coupling 0.08%

 3.1 Initial simulations ◦ Double Pattern approach  Wavelenth: 850nm & 1550nm  Disks Thickness: 1mm  Pattern used: 50um (Both positions On & Off)  Distance Between Disks: Variable  Screen distance: 1mm

 3.1 Initial simulations ◦ Double Pattern approach:  In account 2 conditions  A) Transmission  B) Reflection  (Perfect reflection)

 3.1 Initial simulations ◦ Double Pattern approach (Transmission)

 3.1 Initial simulations ◦ Double Pattern approach (Reflection)

 3.1 Initial simulations ◦ Double Pattern approach  Transmission 850nm (Absorption 92%)  Reflection 850nm (Reflexivity 60%)

 Focusing the beam ◦ Initial results with lenses. ◦ A) Usage of Double Convex lenses:  Edmund Optics has Possible Lenses which could fit in Accu-Glass Collimator.  Initial Simulations are showing errors in focusing distances. ◦ B) Usage of plano-convex lens combination:  Two collimators from Accu-Glass faced  Necessity of cutting one of them ◦ C) Using Defocusing defect:  Accu-Glass Collimator as a Focuser

LOSSES (Lc)TransmissionReflectionReflection (Collimator) Fresnell Disk-Vacuum dB Fresnell Fiber-Vacuum000dB Insertion Losses ST dB Insertion Losses SMA 1*2222dB Optical Fiber1.75 dB Free Space dB Splitter 10/ dB Total Losses dB Pr0.04% 5.71%Ps Power BalanceTransmissionReflexionReflection (Collimator) Ps 555mW dBm Pr mW dBm Free space loses comparing initial with Zemax (dB) TransmissionReflectionDouble pattern Initial Zemax