IEC 62496-4:2011 covers general information on the subject of Optical Circuit Board (OCB) interfaces. It includes normative references, definitions and rules for creating and interpreting the standard drawings.<\/p>\n
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| 6<\/td>\n | English \n CONTENTS <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions 3.1 General definitions <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 3.2 Core shape definitions <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Figures \n Figure 1 \u2013 Examples of shapes of square core \n(quasi-square made by extrapolation or interpolation) Figure 2 \u2013 Examples of shapes of circular core <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | 4 Coordinates of I\/O ports of waveguide OCB 4.1 Structural types of waveguide OCB Figure 3 \u2013 Six structural parameters of square core shape of waveguide OCB <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Figure 4 \u2013 Example of OCB with end face I\/O ports at edge of board Figure 5 \u2013 Example of OCB with end face I\/O type <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 4.2 Origin point and coordinate axis Figure 6 \u2013 Example of OCB with surface I\/O ports Figure 7 \u2013 Example of OCB with surface I\/O ports <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Figure 8 \u2013 Definition of origin point 1): A specific port is used as the origin point Table 1 \u2013 The coordinate system, origin point and coordinate axis <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | Figure 9 \u2013 Definition of origin point 2): Determination of an origin point at a place where there is no port (a mid-point of adjacent two ports \nat the centre of bottom line is used as the origin) Figure 10 \u2013 Definition of the direction of coordinate axis 1):Use the direction of alignment of multiple ports Figure 11 \u2013 Definition of direction of coordinate axis 2):Along a specific optical circuit (only if the wire is recognizable) <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Figure 12 \u2013 Origin point and coordinate axis (1) Figure 13 \u2013 Origin point and coordinate axis (2) <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Figure 14 \u2013 Origin point and direction of coordinate axis \n(combination of Figure 12 and Figure 13) Figure 15 \u2013 Use of both internal coordinate and external coordinate systems:Internal for the origin point (a specific optical input\/output port) and external \nfor the direction of the axis (dedicated structures) <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5 Misalignment angle of I\/O ports 5.1 General 5.2 Misalignment angle of I\/O port in edge type Figure 16 \u2013 Use of both internal coordinate and external coordinate systems:Internal for the origin point (coordinates of a specific optical input\/output port) \nand external for the direction of the axis (periphery of the board) <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Figure 17 \u2013 Definition of misalignment angle of I\/O port in edge type Figure 18 \u2013 Definition of vertical and horizontal rotationalmisalignment angle of I\/O port in edge type <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.3 Misalignment angle in surface type I\/O port Figure 19 \u2013 Definition of misalignment angle of I\/O port in surface type <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 6 Mirror angle Figure 20 \u2013 Definition of longitudinal and lateral misalignment angle of I\/O port in surface type Figure 21 \u2013 Mirror angle 1 Figure 22 \u2013 Mirror angle 2 <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Figure 23 \u2013 Mirror angle 3 Figure 24 \u2013 Mirror angle 4 <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 7 Hole Figure 25 \u2013 Mirror tilt angle Figure 26 \u2013 Example of optical alignment hole <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 8 Dimensioning system 9 Gauges 10 Tolerance grade of the OCB 10.1 General Figure 27 \u2013 Hole and objects to be measured <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 10.2 Shape accuracy of the OCB body of fibre flexible OCB 10.3 Position accuracy of the OCB port\/I\/O port of fibre flexible OCB Figure 28 \u2013 Classification of shape accuracy of OCB body of fibre flexible OCB <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 10.4 Length accuracy of the OCB tails of fibre flexible OCB <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Annex A (normative) \nOCB interfaces <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | Annex B (informative) \nExample of the OCB Figure B.1 \u2013 Example of the fibre flexible OCB <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | Figure B.2 \u2013 Origin point and coordinate for the fibre flexible OCB <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Optical circuit boards – Interface standards. General and guidance<\/b><\/p>\n |