IEC 62149-2:2009 pdf download – Fibre optic active components and devices – Performance standards – Part 2: 850 nm discrete vertical cavity surface emitting laser devices
1 scope
This part of lEC 62149 covers the performance specification for 850-nm discrete verticalcavity surface emitting laser (vcSEL) devices of transverse multimode types used for thefibre optic telecommunication and optical data transmission application.The performancestandard contains a definition of the product performance requirements together with a seriesof sets of tests and measurements with clearly defined conditions,severities, and pass/failcriteria.The tests are intended to be run on a “once-off” basis to prove any product’s ability tosatisfy the performance standard’s requirements.
A product that has been shown to meet all the requirements of a performance standard canbe declared as complying with the performance standard, but should then be controlled by aquality assurancelquality conformance program.
Depending on the modulation speeds,subcategorized specifications are defined.Types A1,A2 and A3 correspond to 1,25 Gbit/s,2,5 Gbit/s and 4,25 Gbit/s vCSELs, respectively.
Each subcategorized specification is also defined by separate details depending on thedevice types,such as specifications for a VcSEL device without a monitor photodiode (Casea) and for a vcsEL device with a monitor photodiode (Case b).
2Normative references
The following referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 60749(all parts),Semiconductor devices – Mechanical and climatic test methods
IEC60825(all parts), Safety of laser products
IEC 60950-1, Information technology equipment – Safety – Part 1: General requirements
IEC 61300-2-4， Fibre optic interconnecting devices and passive components – Basic test andmeasurement procedures – Part 2-4 : Tests – Fibre/cable retention
IEC 61300-2-19，Fibre optic interconnecting devices and passive components – Basic testand measurement procedures – Part 2-19:Tests – Damp heat (steady state)
IEC 61300-2-48，Fibre optic interconnecting devices and passive components – Basic testand measurement procedures – Part 2-48: Tests – Temperature-humidity cycling
IEC Guide 107: 2009,Electromagnetic compatibility – Guide to the drafting of electromagneticcompatibility publications
3 Terms, definitions, symbols and abbreviated terms
For the purposes of this document, the following terms, definitions, symbols and abbreviatedterms apply.
NOTE The terminology concerning the physical concepts， the types of devices, the general terms, and thoserelated to ratings and characteristics of semiconductor devices can be found in lEC 60747-5-1. In addition, thedefinition for the essential ratings and characteristics of the semiconductor optoelectronic devices for fibre opticsystem applications can be found in lEC 62007-1.
3.1Terms and definitions
The following terms are defined for the specific characteristics of vertical cavity surfaceemitting laser devices.
3.1.1
operating wavelength
peak centre laser wavelength of the vertical cavity surface emitting laser device when it isoperated at the normal operating conditions specified in the sectional specification of thevcsEL
3.1.2
transverse mode
cross-sectional profile of the optical beam intensity at the laser output of the VCSEL.Depending on the mode status between multi-mode and single-mode, the package type of thevcsEL devices is also defined
3.1.3
multi-mode
cross-section transverse mode of the laser beam profile with mode number greater than one,which means that the intensity profile has more than one spot,compared to the single-modewhich corresponds to the cross-section transverse mode of the laser beam profile with modenumber of one having the intensity profile of one circular spot
3.1.5
submount
substrate upon which a laser is mounted for assembly into the further packaging
3.1.6
VCSEL device without a monitor photodiode
VCSEL packaged device without a monitor photodiode
3.1.7
VCSEL device with a monitor photodiode
VCSEL packaged device with a monitor photodiode
4 Product parameters
4.1 Absolute limiting ratings Absolute limiting (maximum and/or minimum) ratings imply that no catastrophic damage will occur if the product is subject to these ratings for short periods, provided each limiting parameter is in isolation and all other parameters have values within the normal performance parameters. It should not be assumed that limiting value of more than one parameter can be applied at any one time. The absolute maximum ratings of the subcategorized types A1 , A2, and A3 for modulation speeds are listed in Annex A and Annex B, depending on the device types.
