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Keysight DFB Laser Source Module User’s Guide

13

Getting Started with DFB Laser Sources

1

Optical Output

Polarization Maintaining Fiber

The Keysight 81663A DFB Laser Source module is equipped with a

polarization maintaining fiber (PMF) as standard, the PMF is aligned to

maintain the state of polarization.

The fiber is of Panda type, with TE mode in the slow axis in line with the

connector key. A well defined state of polarization ensures constant

measurement conditions.

Figure 3

PMF Output Connector

shows the symbol for straight contact connectors.

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Содержание 81663A

Страница 1: ...User Guide Keysight 81663A DFB Laser Source Module...

Страница 2: ...nment requirements beyond those set forth in the EULA shall apply except to the extent that those terms rights or licenses are explicitly required from all providers of commercial computer software pu...

Страница 3: ...nformation 9 Initial Safety Information for Laser Source Modules 10 Laser Safety Labels 11 Laser Class 1M 11 What is a Laser Source Module 12 A Description of the Front Panel 12 Optical Output 13 Oper...

Страница 4: ...strument 37 Safety Precautions 38 Why is it important to clean optical devices 39 What do I need for proper cleaning 40 Standard Cleaning Equipment 40 Additional Cleaning Equipment 43 Preserving Conne...

Страница 5: ...plate 55 How to clean instruments with a physical contact interface 56 Preferred Procedure 56 Procedure for Stubborn Dirt 56 How to clean instruments with a recessed lens interface 58 Preferred Proced...

Страница 6: ...Definition of Terms 66 Wavelength tuning range 66 Wavelength display resolution 66 Wavelength repeatability 66 Wavelength stability 67 Max output power 67 Power CW stability 67 Sidemode suppression ra...

Страница 7: ...es Safety Considerations 8 Initial Safety Information for Laser Source Modules 10 Laser Safety Labels 11 What is a Laser Source Module 12 Operation Note 15 Keysight Technologies Sales and Service Offi...

Страница 8: ...d with this symbol when it is necessary for the user to refer to the instruction manual in order to protect the apparatus against damage Hazardous laser radiation Initial Inspection Inspect the shippi...

Страница 9: ...otect the module from temperature extremes that may cause condensation within it Environmental Information This product complies with the WEEE Directive 2002 96 EC marking requirements The affixed lab...

Страница 10: ...une 24 Table 1 DFB Laser Source Modules Laser Safety Information Laser Safety Labels Laser Class 1M Figure 1 Laser Class 1M Safety Label Keysight 81663A Keysight 81663A Laser type CW DFB Laser with bu...

Страница 11: ...aser safety labels is included with the laser module as required In order to meet the requirements of IEC 60825 1 we recommend that you stick the laser safety labels in your language onto a suitable l...

Страница 12: ...isplayed on the user interface of your mainframe The center wavelength your module supports is displayed on the front panel see Figure 2 A Description of the Front Panel Figure 2 Front Panel of DFB La...

Страница 13: ...e is equipped with a polarization maintaining fiber PMF as standard the PMF is aligned to maintain the state of polarization The fiber is of Panda type with TE mode in the slow axis in line with the c...

Страница 14: ...iber endfaces reflected light tends to reflect into the cladding reducing the amount of light that reflects back to the source Figure 4 Angled Contact Connector Symbols with PMF Figure 4 shows the sym...

Страница 15: ...ulti Wavelength Meter 1 Set up your equipment as displayed in Figure 5 Figure 5 Wavelength Accuracy Setup 2 On the user interface of your Keysight 8163A B Lightwave Multimeter move to the DFB source m...

Страница 16: ...h value If the displayed value is not accurate enough for your application on the user interface of your 8163A B Lightwave Multimeter perform the following steps a Move to and press Enter b Adjust the...

Страница 17: ...ght com find lightwave You can also contact one of the following centers and ask for a test and measurement sales representative United States 800 829 4444 TEL 800 829 4433 FAX Canada 877 894 4414 TEL...

Страница 18: ......

Страница 19: ...Accessories Instrument Required 16 The Keysight 81663A DFB Laser Source Module is available in various configurations for the best possible match to the most common applications This chapter provides...

Страница 20: ...20 Keysight DFB Laser Source Module User s Guide 2 Accessories Recommended Connector Interfaces Figure 6 Recommended Connector Interfaces...

Страница 21: ...Source Module User s Guide 21 Accessories 2 Wavelength Options Table 2 DFB Laser Source Modules Laser Safety Information Keysight 81663A Option Number Center Wavelength nm 131 1310 149 1490 151 1510...

Страница 22: ...Test Records 32 The procedures in this section test the optical performance of the instrument The complete specifications to which the Keysight 81663A DFB Laser Source Module is tested are given in S...

Страница 23: ...red for the performance test is listed below Table 3 Required Equipment Instrument Accessory Recommended Model Required Characteristics Alternative Models Multimeter Mainframe 8163B 8163A 164A B 8166A...

Страница 24: ...e Tests 3 Test Record Results of the performance test may be noted in the Test Record provided at the end of the Test Procedures The Test Record can also be used as a permanent record and may be repro...

Страница 25: ...ource Module User s Guide 3 Performance Tests Test Failure If the Keysight 81663A DFB Laser Source Module fails any performance test return the instrument to the nearest Keysight Technologies Sales Se...

Страница 26: ...t 81663A DFB Laser Source Module can be tested The specifications also list some supplemental characteristics of the Keysight 81663A DFB Laser Source Module Supplemental characteristics should be cons...

Страница 27: ...er instructions 2 Set the display to show peak wavelength 3 Set the medium to Vacuum Wavelength Repeatability Test 1 Move to the DFB Source channel of the 8163A B 8164A B or 8166A B mainframe and pres...

Страница 28: ...pick the largest measured value and the smallest measured value 11 Calculate the wavelength repeatability by subtracting the largest measured value from the smallest measured value Wavelength Stabilit...

Страница 29: ...________________________________________________ ________________________________________________________________________________________________ ______________________________________________________...

Страница 30: ...__ 4 ____________________________ ____________ ____________ ___________ 5 ____________________________ ____________ ____________ ___________ 6 ____________________________ ____________ ____________ __...

Страница 31: ...Result Maximum Specification Measurement Uncertainty I Wavelength Repeatability nm nm measured at ________nm 50 GHz offset frequency ________ 0 01 m measured at ________nm 0 GHz offset frequency ____...

Страница 32: ...z to 50 Ghz nm from 30 GHz to 50 Ghz nm from 10 GHz to 50 GHz nm from 10 GHz to 50 GHz nm from 0 GHz to 50 GHz nm from 0 GHz to 50 GHz nm from 10 GHz to 50 GHz nm from 10 GHz to 50 GHz nm from 30 GHz...

Страница 33: ...ial Setting REF nm Start Value nm from 30 GHz to 50 Ghz nm 1 nm from 10 GHz to 50 GHz nm 2 nm from 0 GHz to 50 GHz nm 3 nm from 10 GHz to 50 GHz nm 4 nm from 30 GHz to 50 GHz nm 5 nm from 50 GHz to 50...

Страница 34: ...d for proper cleaning 40 Preserving Connectors 45 Cleaning Instrument Housings 46 Which Cleaning Procedure should I use 47 How to clean connectors 48 How to clean connector interfaces 51 How to clean...

Страница 35: ...f cleaning Consult your specific optical device manuals or guides for full information on safety matters Please try whenever possible to use physically contacting connectors and dry connections Clean...

Страница 36: ...ing Information 4 Cleaning Instructions for this Instrument The Cleaning Instructions apply to a number of different types of Optical Equipment How to clean instruments with a physical contact interfa...

Страница 37: ...ll sources when you are cleaning any optical interfaces Under no circumstances look into the end of an optical device attached to optical outputs when the device is operational The laser radiation is...

Страница 38: ...Furthermore the power density may burn dust into the fiber and cause additional damage for example 0 dBm optical power in a single mode fiber causes a power density of approximately 16 million W m2 I...

Страница 39: ...bles come with covers to protect the cable ends from damage or contamination We suggest these protected coverings should be kept on the equipment at all times except when your optical device is in use...

Страница 40: ...ton swabs Foam swabs will often leave behind filmy deposits after cleaning Use care when cleaning and avoid pressing too hard onto your optical device with the swab Too much pressure may scratch the s...

Страница 41: ...pters as the center of a pipe cleaner is hard metal and can damage the bottom of the adapter Your pipe cleaner should be new when you use it If it has collected any dust or dirt this can scratch or co...

Страница 42: ...ight source on your microscope should be very flexible This will allow you to examine your device closely and from different angles A microscope helps you to estimate the type and degree of dirt on yo...

Страница 43: ...contact the manufacturer or your sales distributor Premoistened cleaning wipes Use pre moistened cleaning wipes as described in each individual cleaning procedure Cleaning wipes may be used in every...

Страница 44: ...l when replacing dust caps after use Do not press the bottom of the cap onto the fiber as any dust in the cap can scratch or dirty your fiber surface When you have finished cleaning put the dust cap b...

Страница 45: ...usings Use a dry and very soft cotton tissue to clean the instrument housing and the keypad Do not open the instruments as there is a danger of electric shock or electrostatic discharge Opening the in...

Страница 46: ...s Clean the device with a dry cotton swab Use compressed air to blow away any remaining filament left by the swab Heavy dirt If the above procedure is not enough to clean your instrument follow one of...

Страница 47: ...degree of dirtiness or the depth of the scratches This is a difficult procedure and should only be performed by skilled personal and as a last resort as it wears out your connector To assess the proje...

Страница 48: ...the alcohol dissolved sediment and dust by rubbing gently over the surface using a small circular movement 4 Blow away any remaining lint with compressed air An Alternative Procedure A better more ge...

Страница 49: ...e is greasy dirt on the adapter 1 Moisten a new pipe cleaner with isopropyl alcohol 2 Clean the adapter by rubbing the cotton swab over the surface using a small circular movement 3 Take a new dry sof...

Страница 50: ...e interface 1 Moisten a new pipe cleaner with isopropyl alcohol 2 Clean the interface by pushing and pulling the pipe cleaner into the opening Rotate the pipe cleaner slowly as you do this 3 Moisten a...

Страница 51: ...adapter by pushing and pulling a new dry pipe cleaner into the opening Rotate the pipe cleaner slowly as you do this 2 Clean the adapter by rubbing a new dry cotton swab over the surface using a smal...

Страница 52: ...e the properties of projection Preferred Procedure Use the following procedure on most occasions 1 Clean the lens by rubbing a new dry cotton swab over the surface using a small circular movement 2 Bl...

Страница 53: ...articles the only way to clean a fixed connector interface and the input of the optical block is to use compressed air If there are fluids or fat in the connector please refer the instrument to the sk...

Страница 54: ...4 How to clean instruments with an optical glass plate Some instruments for example the optical heads from Keysight Technologies have an optical glass plate to protect the sensor Clean this glass plat...

Страница 55: ...e The invisible emitted light is project onto the card and becomes visible as a small circular spot Preferred Procedure Use the following procedure on most occasions 1 Clean the interface by rubbing a...

Страница 56: ...er s Guide 57 Cleaning Information 4 3 Take a new dry soft tissue and remove the alcohol dissolved sediment and dust by rubbing gently over the surface using a small circular movement 4 Blow away any...

Страница 57: ...of the difficulty of cleaning out any dirt that is washed to the edge of the interface 1 Moisten a new cotton swab with isopropyl alcohol 2 Clean the interface by rubbing the cotton swab over the sur...

Страница 58: ...es that are extremely sensitive to mechanical stress or pressure you can also use an optical clean polymer film This procedure is time consuming but you avoid scratching or destroying the surface 1 Pu...

Страница 59: ...nd that the device will be destroyed by becoming mechanically distorted Preferred Procedure Use the following procedure on most occasions 1 Use compressed air at a distance and with low pressure to re...

Страница 60: ...ake your cleave and immediately insert the fiber into your bare fiber adapter in order to protect the surface from dirt How to clean large area lenses and mirrors Some mirrors as those from a monochro...

Страница 61: ...urface 1 Put the film on the surface and wait at least 30 minutes to make sure that the film has had enough time to dry 2 Remove the film and any dirt with special adhesive tapes CAUTION Only use wate...

Страница 62: ...B If your lens is sensitive to water then 1 Moisten the lens or the mirror with isopropyl alcohol 2 Take a new dry soft tissue and remove the alcohol dissolved sediment and dust by rubbing gently ove...

Страница 63: ...n you insert the ferrule of a patch cord into a connector or an adapter ensure that the fiber end does not touch the outside of the mating connector or adapter Otherwise the fiber end will rub up agai...

Страница 64: ...cleaning either the mainframe or the housing of your instrument only use a dry and very soft cotton tissue on the surfaces and the numeric pad Never open the instruments as they can be damaged Opening...

Страница 65: ......

Страница 66: ...001 international quality system standard as part of Keysight s commitment to continually increasing customer satisfaction through improved quality control Specifications describe the module s warrant...

Страница 67: ...s apply where the relevant center wavelength is defined as the center of the tuning range Conditions At specified conditions and coherence control off Measurement With wavelength meter Wavelength disp...

Страница 68: ...e output power constant wavelength and power level settings coherence control off controlled environment and time span as specified Measurement With wavelength meter Averaging time given by wavelength...

Страница 69: ...suppression ratio SMSR The ratio of the optical power of the main mode to the optical power of the highest sidemode expressed in dB Conditions At a specified output power and wavelength coherence con...

Страница 70: ...frequencies as specified ON switching with fast output power stabilization When the laser is switched on after the specified warm up time the output power will settle within the specified time to comp...

Страница 71: ...3A Option 162 Type CW DFB Laser with built in isolator Center Wavelengtha b 1310 nm 5 nm 1490 nm 3 nm 1510 nm 3 nm 1550 nm 3 nm 1625 nm 3 nm Tuning Range Display Resolution Repeatabilityc Stability 15...

Страница 72: ...ee selection 200 Hz to 100 kHz All output signals are pulse shaped duty cycle 50 Internal variable coherence control for linewidth broadening ON switching with fast output power stabilization 20 s Out...

Страница 73: ...This information is subject to change without notice Keysight Technologies 2017 Edition 10 0 January 2017 www keysight com...

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