Ericsson FSU 975 PM-A SM MM Fiber Fusion Splicer
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Ericsson FSU 975 PM-A Fiber Fusion Splicer
Automated PM Splicing
By combining its POL (Polarization Observation by Lenseffect tracing) method of fiber alignment with its standard FSU series machines, Ericsson creates a PM (Polarization Maintaining) splicer that offers effective rotational alignment for all types of PM fibers, as well as, the convenience of automated splicing.
PM Fiber
PM fiber comes in four main types--Panda, Bowtie, Elliptical jacket and Elliptical core-- all of which are illustrated on this page. The various types represent different methods of achieving the same goal: namely to suppress the crosscoupling of power between two perpendicularly polarized modes. PM fiber is used in any system where control of polarization is necessary, such as in coherent communications systems and interferometric sensors.
However, in order to build such systems one must first be able to splice PM fiber such that its polarization maintaining properties are preserved. The measure of these properties is the extinction ratio, which is the logarithmic ratio of the power along the two principal axes. Typically, PM fiber is manufactured with an extinction ratio of around 25-45 dB. In order to get an extinction ratio over 30 dB when splicing, one must be able to splice the fibers with less than 1.5o of rotational misalignment.
A number of active and passive alignment methods have been developed for PM fiber splicing. However, active alignment methods have often been costly and tedious; whereas, passive alignment techniques have often suffered from being fiber type specific or excluding extinction ratio estimation. Ericsson?s POL method overcomes all of these limitations, allowing for costeffective splicing of all sorts of PM fiber (as well as, D-shaped, V-shaped, twin-core and multicore fiber) and providing the tools needed for reliable extinction ratio estimation.
POL Method
The POL Method takes advantage of the fact that when a fiber is illuminated from the side, it acts as a cylindrical lens that offers a measurable light intensity profile. Since, in the case of PM fiber, this light intensity profile changes during rotation, it is possible to analyze 360° worth of light intensity profiles for a given fiber and arrive at a new profile--a POL profile--that indicates the fiber?s exact rotational orientation. The POL profile for each PM fiber type has its own characteristic form; however, the curves are similar, and more importantly, mathematically comparable (see adjacent diagram). Additionally, since POL profiles include a large number of data points and information from an entire rotation, they are relatively noise insensitive.
FSU 975 PM-A
What is needed then to orient two fibers with respect to each other are rotators that can turn each of the fibers at least 360° , side-view illumination, cameras to record light intensity profiles, and programmed algorithms to calculate the POL profiles and compare them. All of this has been integrated into the FSU 975 PM-A.
With an automatic splicer like the FSU 975 PM-A, splicing PM fibers is as easy and reliable as ordinary fiber splicing. It takes only 2-3 minutes from fiber loading to a finished splice when splicing PM fiber with the FSU PM-A.
Additionally, the FSU 975 PMA has all of the features of its brother, the FSU 975, including Ericsson?s hot image estimation technique and real time control. Thus, by choosing the FSU 975 PM-A, one gets not only a cost-effective PM splicer, but also a powerful, versatile splicer for ordinary splicing, as well as, for handling more complex applications, such as attenuator making and tapering.
Extinction Ratio Estimation
The extinction ratio quantifies the degree to which light is polarized along one axis, and thus represents to what extent the PM fiber is indeed maintaining polarization. In this sense, measuring the extinction ratio after PM splicing is roughly analogous to measuring the power loss after ordinary splicing: they both give you an indication of how successful the splicing was.
The POL method employed by Ericsson in the FSU 975 PMA gives an impressive mean extinction ratio of 32.2 dB (with 2.73 dB standard deviation). In addition, the splicer automatically makes an extinction ratio estimation after each splice, which gives an accurate evaluation when compared to measured values.
In order to estimate the extinction ratio, the FSU 975 PM-A re-rotates the spliced fibers 360 degrees and calculates new POL profiles to determine the post-splicing angular offset. This latter value is then used to calculate the estimated extinction ratio.
Specifications:
Automated PM Splicing
By combining its POL (Polarization Observation by Lenseffect tracing) method of fiber alignment with its standard FSU series machines, Ericsson creates a PM (Polarization Maintaining) splicer that offers effective rotational alignment for all types of PM fibers, as well as, the convenience of automated splicing.
PM Fiber
PM fiber comes in four main types--Panda, Bowtie, Elliptical jacket and Elliptical core-- all of which are illustrated on this page. The various types represent different methods of achieving the same goal: namely to suppress the crosscoupling of power between two perpendicularly polarized modes. PM fiber is used in any system where control of polarization is necessary, such as in coherent communications systems and interferometric sensors.
However, in order to build such systems one must first be able to splice PM fiber such that its polarization maintaining properties are preserved. The measure of these properties is the extinction ratio, which is the logarithmic ratio of the power along the two principal axes. Typically, PM fiber is manufactured with an extinction ratio of around 25-45 dB. In order to get an extinction ratio over 30 dB when splicing, one must be able to splice the fibers with less than 1.5o of rotational misalignment.
A number of active and passive alignment methods have been developed for PM fiber splicing. However, active alignment methods have often been costly and tedious; whereas, passive alignment techniques have often suffered from being fiber type specific or excluding extinction ratio estimation. Ericsson?s POL method overcomes all of these limitations, allowing for costeffective splicing of all sorts of PM fiber (as well as, D-shaped, V-shaped, twin-core and multicore fiber) and providing the tools needed for reliable extinction ratio estimation.
POL Method
The POL Method takes advantage of the fact that when a fiber is illuminated from the side, it acts as a cylindrical lens that offers a measurable light intensity profile. Since, in the case of PM fiber, this light intensity profile changes during rotation, it is possible to analyze 360° worth of light intensity profiles for a given fiber and arrive at a new profile--a POL profile--that indicates the fiber?s exact rotational orientation. The POL profile for each PM fiber type has its own characteristic form; however, the curves are similar, and more importantly, mathematically comparable (see adjacent diagram). Additionally, since POL profiles include a large number of data points and information from an entire rotation, they are relatively noise insensitive.
FSU 975 PM-A
What is needed then to orient two fibers with respect to each other are rotators that can turn each of the fibers at least 360° , side-view illumination, cameras to record light intensity profiles, and programmed algorithms to calculate the POL profiles and compare them. All of this has been integrated into the FSU 975 PM-A.
With an automatic splicer like the FSU 975 PM-A, splicing PM fibers is as easy and reliable as ordinary fiber splicing. It takes only 2-3 minutes from fiber loading to a finished splice when splicing PM fiber with the FSU PM-A.
Additionally, the FSU 975 PMA has all of the features of its brother, the FSU 975, including Ericsson?s hot image estimation technique and real time control. Thus, by choosing the FSU 975 PM-A, one gets not only a cost-effective PM splicer, but also a powerful, versatile splicer for ordinary splicing, as well as, for handling more complex applications, such as attenuator making and tapering.
Extinction Ratio Estimation
The extinction ratio quantifies the degree to which light is polarized along one axis, and thus represents to what extent the PM fiber is indeed maintaining polarization. In this sense, measuring the extinction ratio after PM splicing is roughly analogous to measuring the power loss after ordinary splicing: they both give you an indication of how successful the splicing was.
The POL method employed by Ericsson in the FSU 975 PMA gives an impressive mean extinction ratio of 32.2 dB (with 2.73 dB standard deviation). In addition, the splicer automatically makes an extinction ratio estimation after each splice, which gives an accurate evaluation when compared to measured values.
In order to estimate the extinction ratio, the FSU 975 PM-A re-rotates the spliced fibers 360 degrees and calculates new POL profiles to determine the post-splicing angular offset. This latter value is then used to calculate the estimated extinction ratio.
Specifications:
| Alignment methods | Azithumal: POL method Axial: Hot core alignment with real time control |
| Extinction ratio | 32.2 dB (Mean, STD 2.73), up to 40 dB for certain types |
| Splice losses | Typical values 0.02 dB |
| Power supply | 90 - 264 V AC, 50 - 60 Hz 13.2 V DC |
| Monitor | 3 high resolution LCD monitor |
| Video Output | 1 V p-p positive, 75 Ohms/CCIR |
| Operating environment | 0 to 40 °C. 0 - 95% RH (non-condensing) |
| Size/weight | 37 x 36.2 x 18 cm (WxDxH) 8.15 kg (power supply and other accessories not included) |
Ericsson FSU 975 PM-A SM MM Polarization Maintaining Fiber Optic Fusion Splicer
With an automatic splicer like the FSU 975 PM-A, splicing PM fibers is as easy and reliable as ordinary fiber splicing
The FSU 975 PMA has all of the features of its brother, the FSU 975, including Ericsson?s hot image estimation technique and real time control
Includes 6 Month Fusion Splicer Care Kit (FS6MC)
- 4oz Flip Jar Of 99% Alcohol
- (50) Non-Lint Dry Wipes
- (6) Fiber Optic Wipes w/ 99% Alcohol
- 2oz Pump Fast Evaporating Mirror Spray
- (25) Camera Swabs
- (25) V-Groove Swabs
Includes USFiber Optic USF-21C High Precision Fiber Cleaver, Hard Carrying Case & Accessories As Listed
FSU-975 FSU975 PM A
Ericsson FSU975 PM-A FSU-975 PM-A Fusion Splicer Models On Sale Warranty Calibration Backed by The Best Service and Lowest Prices in the Industry.
BC# 21024
- Ericsson FSU 975 PM-A Polarization Maintaining Fusion Splicer (BC# 21024)
- USFiberOptic USF-21C High Precision Fiber Cleaver
- Clauss CFS-02 Fiber Optic Stripper
- 6 Month Fusion Splicer Care Kit FS6MC:
- 4oz Flip Jar Of 99% Alcohol
- (50) Non-Lint Dry Wipes
- (6) Fiber Optic Wipes w/ 99% Alcohol
- 2oz Pump Fast Evaporating Mirror Spray
- (25) Camera Swabs
- (25) V-Groove Swabs
- Ericsson FS4 Power Supply
- 250 Fiber Holder Set
- Power Cord
- RS232 PC Interface Cable
- User Manual On CD-ROM
- Hard Carrying Case (G)