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Summary of Contents for THORLABS INT-COM-1300
- Page 1 Operation Manual Thorlabs Instrumentation INT-COM-1300 Common Path OCT Interferometer...
- Page 2 Date: 30-11-2007 © Copyright 2007, Thorlabs GmbH...
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Page 3: Table Of Contents
4.3 Repair Appendix 5.1 Technical Data 5.2 Mechanical Drawing 5.3 Warranty 5.4 Certifications and Compliances 5.5 Thorlabs “End of Life” Policy (WEEE) 5.5.1 Waste treatment on your own responsibility 5.5.2 Ecological background 5.6 List of Figures 5.7 List of Acronyms... - Page 5 We and our international partners are looking forward to hear from you. Thorlabs GmbH This part of the instruction manual contains every specific information on how to handle and use the INT-COM-1300 Common Path OCT Interferometer. A general description is followed by explanations of how to operate the unit. Attention This manual contains “WARNINGS”...
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Page 7: Overview
1 Overview 1 Overview The Thorlabs INT-COM-1300 Common Path OCT Interferometer is a subassembly to be used in swept source Fourier domain OCT systems and other applications. It contains a fusion coupler network to operate with an external Common Path interferometer probe. -
Page 8: Safety
The unit must not be operated in explosion endangered environ- ments! Only with written consent from Thorlabs GmbH may changes to single components be carried out or components not supplied by Thorlabs GmbH be used. This precision device is only dispatchable if duly packed into the complete original packaging including the plastic form parts. -
Page 9: Getting Started Quickly
Please check prior to operation, if the indicated line voltage range on the power supply matches with your local mains voltage! NOTE If you want to use your own power supply, you can ask Thorlabs for an appropriate power connector cable. 2.2 Setup •... -
Page 10: First Operation
To prevent saturation of the amplifier keep the optical input powers less than the saturation power listed in specification. Attention Refer to the specification and pay attention to the optical damage threshold! Exceeding these values will permanently destroy the detectors! INT-COM-1300 / page 4... -
Page 11: Detailed Description
An additional aiming laser input simplifies the optical alignment of the probe. The INT-COM-1300 is powered by the included external power supply (±12V, 200mA) via a PICO M8 power connector. Figure 1 shows a functional block diagram of the INT-COM-1300 Common Path OCT Interferometer. Circulator Circulator... -
Page 12: Optical Input And Output, Fiber Network
The reflections from both arms are combined to produce the interference fringes. This signal is detected by the balanced detector integrated into the INT-COM-1300 subassembly. The second input of the balanced detector is used to compensate the DC component in the interference signal. - Page 13 3 Detailed Description to get the OUTPUT signal nearly independent to input polarization changes. Figure 2 and Figure 3 show the typical spectral behavior of the INT-COM-1300 measured from 1300nm IN to PROBE port and from 1300nm IN to VOA IN port.
- Page 14 PROBE port to sample. An additional optical delay line may be inserted between VOA IN and VOA OUT for fine tuning the path length difference. Please note, that the INT-COM-1300 can also operate outside the specified wavelength range. It will generate expedient output signals, but specification cannot be guaranteed.
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Page 15: Electrical Output
3 Detailed Description 3.3 Electrical Output The INT-COM-1300 has an OUTPUT SMA connector carrying the detected OCT fringe signal. This OUTPUT delivers an output voltage proportional to the difference between the balanced detector’s two optical input signals (i.e. difference between the photo currents of both photo detectors), which is amplified by an ultra low noise, high-speed transimpedance amplifier. - Page 16 (resolution bandwidth 10 kHz, video BW 3kHz). The optical inputs of the INT-COM-1300 were darkened during measurement. The lower curve is measured with INT-COM-1300 switched off , i.e., it represents the measurement system’s noise floor.
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Page 17: Detector Responsivity
3 Detailed Description 3.4 Detector Responsivity INT-COM-1300 uses InGaAs PIN photodiodes. Figure 6 shows a typical responsivity curve for this photodiode type. 1000 1200 1400 1600 1800 Wavelength (nm) Figure 6: INT-COM-1300 detector responsivity This wavelength dependency affects the output signal amplitude. In order to compensate this responsivity, the measured electrical signal must be multiplied by the normalized wavelength dependent responsivity. -
Page 18: Mounting The Int-Com-1300
3 Detailed Description 3.5 Mounting the INT-COM-1300 The INT-COM-1300 is housed in a rugged 120x80x21mm shielded aluminum enclosure. The unit can be mounted to small edges by 6-32 screws, see Figure 7. Threads are of 6 mm depth. Figure 7: Possible mounting points for INT-COM-1300 An alternative cover with four mounting holes or a customized cover can be ordered on request, see Figure 8. -
Page 19: Basic Measurement Setup
3 Detailed Description 3.6 Basic Measurement Setup This section is dedicated to INT-COM-1300 Common Path OCT Interferometer basic setup in a swept source Fourier domain OCT system, see Figure . A swept laser is connected to 1300nm IN while an red aiming laser is connected to 660nm IN. OCT fringe signals are recorded to a Data Acquisition Device connected to OUTPUT. - Page 20 CMRR value decrease with increasing frequency. Figure 10 shows the common mode rejection capability in balanced condition. VOA OUT PROBE Balance Mode CMRR Frequency (MHz) Figure 10: INT-COM-1300 frequency response and common mode rejection ability INT-COM-1300 / page 14...
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Page 21: Recommendations
FC/APC patch cords made by Thorlabs as well as made by Diamond. If insertion loss of the INT-COM-1300 seems to be too high (higher than listed in specification), please try another FC/APC patch cord and/or adapter combination. -
Page 22: Maintenance And Repair
4.2 Cleaning To clean the INT-COM-1300 housing, use a mild detergent and damp cloth. Do not soak the unit in water or use solvent based cleaners. It is not recommended to remove FC adaptors to clean the inner FC/APC connectors. -
Page 23: Repair
4 Maintenance and Repair 4.3 Repair There are no serviceable parts in the INT-COM-1300 or power supply. The INT- COM-1300 does not contain any components to be repaired by the user. If any malfunction should occur or you suspect a problem, please contact Thorlabs GmbH for repair return instructions. -
Page 24: Appendix
±12V, 200mA Power Supply All accuracy data are valid at 23 ± 5°C and 45 ±15% humidity * includes connector losses, measured at center wavelength ** referred to PROBE and VOA OUT port in this case INT-COM-1300 / page 18... -
Page 25: Mechanical Drawing
5 Appendix 5.2 Mechanical Drawing INT-COM-1300 / page 19... -
Page 26: Warranty
5 Appendix 5.3 Warranty warrants material and production of the INT-COM-1300 for a period Thorlabs GmbH of 24 months starting with the date of shipment. During this warranty period Thorlabs will see to defaults by repair or by exchange if these are entitled to warranty. -
Page 27: Certifications And Compliances
Industrial, Scientific, and Medical Conformity - Equipment: 1992 FCC EMC Emissions comply with the Class A Limits of FCC Code of Federal Regulations Compliance 47, Part 15, Subpart B Using high-quality shielded interface cables. Minimum Immunity Test requirement. INT-COM-1300 / page 21... -
Page 28: Thorlabs "End Of Life" Policy (Weee)
5.5.1 Waste treatment on your own responsibility If you do not return an “end of life” unit to Thorlabs, you must hand it to a company specialized in waste recovery. Do not dispose of the unit in a litter bin or at a public waste disposal site. -
Page 29: Ecological Background
The intent of the WEEE directive is to enforce the recycling of WEEE. A controlled recycling of end of live products will thereby avoid negative impacts on the environment. Figure 11: Crossed out “wheelie bin” symbol INT-COM-1300 / page 23... -
Page 30: List Of Figures
Figure 1: Functional block diagram of the INT-COM-1300 ......... 5 Figure 2: INT-COM-1300 coupling ratio from 1300nm IN to PROBE......7 Figure 3: INT-COM-1300 coupling ratio from 1300 IN to VOA IN ....... 7 Figure 4: INT-COM-1300 OUTPUT frequency response ..........9 Figure 5: INT-COM-1300 spectral noise measurement .......... -
Page 31: Addresses
+49 (0) 81 31 / 5956-0 Fax: +49 (0) 81 31 / 5956-99 Email: europe@thorlabs.com Web: www.thorlabs.com Thorlabs, Inc. 435 Route 206 North Newton, NJ 07860 Sales and Support Phone: 1-973-579-7227 Fax: 1-973-300-3600 Email: sales@thorlabs.com Email: techsupport@thorlabs.com Web: www.thorlabs.com INT-COM-1300 / page 25... - Page 32 5-17-1, Ohtsuka Bunkyo-ku, Tokyo 112-0012 Japan Sales and Support Phone: +81-3-5977-8401 Fax: +81-3-5977-8402 Email: sales@thorlabs.jp Web: www.thorlabs.jp Please call our hotlines, send an Email to ask for your nearest distributor or just visit our homepage http://www.thorlabs.com INT-COM-1300 / page 26...
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