MITSUBISHI

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MITSUBISHI OPTICAL SEMICONDUCTORSMEASURING PROCEDURESI Pulse responseP.G.Pulsegenerator470:!- 1---- Oscilloscope500 Micro strip line 500 Mico strip liner:::::==:::J---i-4 0 SamplingLOPO or APOIFig. 13 Pulse response characteristic measuring systemFig, 13 indica.tes an example for measuringseriesPulse response characteristics.Let the time required for the pulse rising (10 %-90%) from the sampling oscilloscope output waveformbe tr, and the time for falling be tf.I Polarization ratioSlowstartert---'\NIr..-lAPC circuitPolarization PrismPOt----n--+----0 P- output(to XY recorder Y)IF- output(to XY recorder X)Fig. 14 Polarization ratio measuring systemA laser beam is oscillated almost in TE mode (Beampolarized horizontally to hetero junction). The beamstrength is shown as PII. TM mode (Beam polarizedvertically to hetero junction) is just as strong asnatural light (beam). This beam strength is shownas P.L The Polarization ratio is the ratio betweenthe optical strength of the TM mode and the TEmode (P/II P .1.). Fig. 14 shows an example of themeasurement set - up required to measure thePolarization ratio. Turn the laser beam to acollimated one by using a lens with NA = 0.5 andresolve the polarization prism, to measure themaximum power (P/I) and minimum power (P.1.).Obtain the ratio of PI/to P .1. at each optical outputfrom the curves of P w IF and P.1. -IF. The ratio thusobtained is the polarization ratio.• MITSUBISHI.... ELECTRIC. 1 ~ 25
MITSUBISHI OPTICAL SEMICONDUCTORSMEASURING PROCEDURESOJ Astigmatic distanceCameraCamera controllerr:===::1 Display(Astigmatic difference)PersonalcomputerFig. 15 Astigmatic distance measuring system(*) LD window glass thickness correction lensFigure 15 shows a sample measuring system. Movethe LD in the optical axis direction in steps of 2f.L m by driving the Z-axis motor. Read the spotsparallel and perpendicular to hetero junction surfacein the intensity diameter of 1/ e 2 of the peak value.Plot the spot diameters (parallel and perpendicular) inthe direction of LD movement as shown in Fig. 16.Then, approximate this data with a curve to obtainthe LD position at which the spot diameters inparallel and perpendicular directions are smallest.The difference in the distance of the movementis the astigmatic distance. A measurement example(ML4403) is shown' in Fig. 16.m Near Field PatternIn Fig. 15 please observe the near field pattern ofLD by a real image of 500 magnification andcamera of 5000 magnification.E"-~.
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MITSUBISHI LASER DIODESML4XX3 SERIE
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MITSUBISHI LASER DIODESML4XX10 SERI
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~MITSUBISHI LASER DIODESML4XX16 SER
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MITSUBiSHI LASER DIODESML5XX1A SERI
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MITSUBISHI LASER DIODESML5XX1A SERI
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MITSUBISHI LASER DIODESML5XX1 A SER
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MITUBISHI LASER DIODESML6XX1A SERIE
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MITSUBISHI LASER DIODESMl6XX11 SERI
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MITSUBISHI LASER DIODEML7XX1 SERIES
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MITSUBISHII,.ASER DIODESML7XX3 SERI
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~MITSUBISHI LASER DIODESML8XX1 SERI
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MITSUBISHI LA51:FI DIUUt:.~ML8XX1 S
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MITSUBISHI,LASER DIODESML9XX1 SERIE
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MIT$UBISHI LASER DIODESML9XX1 SERIE
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.~MITSUBISHI LASER DIODESML9XX2 SER
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HIGH RADIANCE LIGHT EMITTING DIODES
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HIGH RADIANCE LIGHT EMmlNG DIODESME
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PHOTODIODES
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MITSUBISHI SILI(;UN AVALAN\,;Mt: t"
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MITSUBISHI SILICON AVALANCHE PHOTOD
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MITSUBISHllnGaAs PHOTODIODESPD7XX5
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MITSUBISHllnGaAs PHOTODIODESPD7XX5.
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MITSUBISHI OPTICAL SEMICONDUCTORSPR
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LIST OF PRODUCTSLD Module for Singl
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LIST OF PRODUCTSDlgltal·Optlcal Tr
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PRODUCT DESIGNATION CODEPRODUCT DES
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MEASURING PROCEDURESFOR OPTOELECTRO
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OPTICAL-FIBER COMPONENTS OAT A SHEE
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FU~011 SLD-N20.781..1 m Connectorlz
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FU-16SLD-N1, FU-17SLD-N11.311 m Con
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FU-16SLD-N3, FU-17SLD-N31.31..1 m C
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FU-16SLD-N3, FU-17SLD-N31.31l m Con
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FU-411SLD1.31..l m LD Module with S
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FU-411 SLO-201 .. 3 ~ m LD Module w
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FU-611SLD1.55 iJ. m LD Module with
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FU-611SLD1.55 Il m LD Module with S
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FU-611 SLD-151.55 Il m LD Module wi
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FU-43SLD-11.3 1..1 m LD Module with
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1FU-43SLD-21,31.1 m LD Module with
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FU-43SLD-21.31.1 m LD Module with S
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FU-44SLD-11.3 1.1 m LD Module with
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FU-44SLD-71.31..l m LD Module with
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FU-44SLD-71.3 iJ m LD Module with S
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FU-45SLD1.31-1 m LD Module with Sin
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FU-64SLD-11.551..l m LD Module with
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FU-64SLD-11.55 1..1 m LD Module wit
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FU-64SLD-71.55 IJ m LD Module with
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FU-41SDF, FU-44SDF1.31..1 m DFB-LD
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FU-41 SDF, FU-44SDF1.31J m DFB-LD M
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FU-45SDF-38(CATV Application)1.3 J.
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FU-45SDF-4(Digital Application)1,31
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FU-45SDF-4(Digital"Application)1.31
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FU-48SDF-1(for 2.5Gbps Digital Appl
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FU-61 SDF ,FU-64SDF1.551-1 m DFB-LD
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FU-61 SDF,FU-64SDF1.551..1 m DFB-LD
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FU-65SDF-3(Analog ApplicatiOn)1.551
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FU-65SDF-41.55 tJ. m DFB-LD Module
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FU-65SDF~41.551..l m DFB-LD Module
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FU-68SDF-2DFB-LD Module with Single
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FU-01 LD-N (O.78),FU-27LD{O.78)O.78
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FU-01 LD-N (O.78),FU-27LD{O.78)0;78
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FU-01 LD~N{O.85), FU-27LD (O.85)0.8
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FU-23LD0.85 1.1 m LD Module with Mu
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FU-23LD0.851.1 m LD Module with Mul
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FU-11LD-N1.31J m Connectorlzed LD M
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FU-33LD1.3 iJIt1 LD Module with Mul
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FU-02LE-N,FU-23LE0.851-1 m LED Modu
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FU-02LE-N, FU-23LE0.8511 m LED Modu
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FU-13LE-N,FU-34LE1.31..1 m LED Modu
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FU-04PO-N, FU-21 POPO Module for Sh
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FU-04PO-N, FU-21 POPO Module for Sh
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0.65FU-15PD-N, FU-16PD-NPO Module f
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FU-35PDPO Module for Long Wavelengt
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FU-05AP-N, FU-25APAPD Module for Sh
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FU-05AP-N, FU-25APAPD Module for Sh
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FU-12AP-N, FU-32APAPD Module for Lo
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FU-13AP-NAPD Module for Long Wavele
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FU-310APAPO Module for Long Wavelel
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FU-310APAPD Module for Long Wavelen
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MF-12SDS-TR113-006Digital Optical T
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MF-156DS-TR124-002/003Dlgltal Optic
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M:F-156DS-TR124-002/003Digital Opti
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MF-622DF-T12-007 -011Optical Transm
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~8~~MF-622DF-T12-007-011Optical Tra
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MF-622DS-R13-002/R14-002,003Optical
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MF-20DF-TR014-002Digital Optical Tr
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MF-32DF-T01/R03Digital Optical Tran
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; FC~01PN-SMF, FC-01 PN-PC-SMF,FC-D
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FC-01 PN, FC-01 PN-PC, FC-01 PN-SPC
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MITSUBISHI OPTOELECTRONICSOPTICAL S
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MITSUBISHI

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