YD/T 2554.1-2013Plastic optical fiber connector - Part 1: Type LC (English PDF)

4.1 Classification

4.1.1 Plug interface

It may be divided into four types of interfaces according to the optical fiber cores and

plug-pin outer diameter.

a) phi1.250 plug-pin single-core plastic optical fiber plug interface;

b) phi1.250 plug-pin dual-core plastic optical fiber plug interface;

c) phi1.950 plug-pin single-core plastic optical fiber plug interface;

d) phi1.950 plug-pin dual-core plastic optical fiber plug interface.

4.1.2 Adaptor interface

It may be divided into 8 types of interfaces according to the optical fiber cores and

application.

a) phi1.250 sheath single-core plastic optical fiber connector adapter;

b) phi1.250 sheath single-core plastic optical fiber connector active-device

receptacle interface;

c) phi1.250 sheath dual-core plastic optical fiber connector adapter;

d) phi1.250 sheath dual-core plastic optical fiber connector active-device

receptacle interface;

e) phi1.950 sheath single-core plastic optical fiber connector adapter;

f) phi1.950 sheath single-core plastic optical fiber connector active-device

receptacle interface;

g) phi1.950 sheath dual-core plastic optical fiber connector adapter;

h) phi1.950 sheath dual-core plastic optical fiber connector active-device

receptacle interface.

Table 4 Mating dimensions of Single-core and Dual-core Active-device Receptacle Interfaces

Mark Unit Minimum Maximum Notes

Aa,b mm - - Inner diameter of alignment-device, see Table 5

B mm 9.9 10.0

C mm 4.5 -

D mm 3.4 3.5

E mm 2.6 2.7

F mm 0.2 0.3 Radius of curvature

G mm 4.0 4.1

H1c mm 4.60 4.75

H2c mm 4.60 4.75

I mm 2.87 2.97 Diameter

J mm 2.29 Basic dimension

Kd mm 6.25 Basic dimension

Lc ° - 0.2

M mm 1.0 1.1

N mm 0.5 0.6

O mm - 1.3

P ° 15 Typical value

AO mm 11.0 12.8

AP mm 14.5 14.7

AQ mm 2.2 2.4 Diameter

AR mm 1.1 1.2

AS mm 6.6 6.8

AT mm 0.6 0.7

AV mm 1.0 1.1

AW mm 0.5 0.6 Grade, see Table 5

AX mm 1.9 -

a The connector alignment-device is a rigid bore sheath or resilient alignment sheath. Dimension A defines the

inner diameter of the alignment-device.

b The sheath may be fixed or floating. For a fixed sheath, the positional tolerance applies. For a floating sheath,

a pin-gauge inserted in the sheath must be capable of moving freely into a position such that it is coincident

with datum B.

c Taper (oblique), dimension L, is applied to the surfaces associated with dimensions/features H1 and H2.

d Each of the units in the dual-core active-device receptacle shall comply with all dimensions of Figure 6,

except the added dimension K, distance between dual-core active-device receptacles.

4.2.6 Alignment sheath grade of adapter and active-device receptacle

See Table 5 for the classification of adapter and active-device receptacle interfaces

(i.e. alignment sheath grade).

4.3 Materials

Plastic optical fibers, as specified in Y...

......