Fibre-Lyte 120Gb/s MPO 12Tx
Fibre-Lyte is an optoelectronic packaging technology which can be used to interface with MT connectors. It can package a wide range of VCSELs, detectors and many other chips from low to high power.
This 12Tx MPO part is a standard design (order code CJT-TxR-V7-120 X-C-BBB) which acts as a fully programmable transmitter. It takes 12 electrical channels at 10Gb/s each and transmits them as optical signals. Please see the functional block diagram for further detail.
Conjunct provides pre-drilled pin holes for ease of assembly to both fibre and PCB. Optical coupling uses either an embedded lenses or optical waveguides.s
Note that Conjunct does not fabricate optoelectronic die but packages them. Fibre-Lyte can be used in transceivers, active-optical cables (AOC) or directly attached to PCB in a custom application. If you have a particular die combination or custom application please contact us for a quote.
Fibre-Lyte Coupling to MPO

Fibre-Lyte CJT-TxR-V7-120 X-C-BBB Pinout
| Pin | x (µm) | y (µm) | Code |
Notes |
|---|---|---|---|---|
1 |
-3750 |
-5565 |
TX3_SCK | Transmit device 3 serial digital clock. |
2 |
-3250 |
-5565 |
TX3_SS | Transmit device 3 chip select. |
3 |
-2750 |
-5565 |
TX3_MOSI | Serial digital programming input for transmitter 3. |
4 |
-2250 |
-5565 |
TX3_INT | Transmitter 3 interrupt. |
5 |
-1750 |
-5565 |
TX3_MISO | Serial digital programming output for transmitter 3. |
6 |
-1250 |
-5565 |
TX_GND | Transmit ground plane. |
7 |
-750 |
-5565 |
TX2_SS | Transmit device 2 chip select. |
8 |
-250 |
-5565 |
TX2_MOSI | Serial digital programming input for transmitter 2. |
9 |
250 |
-5565 |
TX2_INT | Transmitter 2 interrupt. |
10 |
750 |
-5565 |
TX2_MISO | Serial digital programming output for transmitter 2. |
11 |
1250 |
-5565 |
TX1_SS | Transmit device 1 chip select. |
12 |
1750 |
-5565 |
TX1_MOSI | Serial digital programming intput for transmitter 1. |
13 |
2250 |
-5565 |
TX1_INT | Transmitter 1 interrupt. |
14 |
2750 |
-5565 |
TX_GND | Transmit ground plane. |
15 |
3250 |
-5565 |
NC | For future use. Leave unconnected. |
16 |
3750 |
-5565 |
TX_GND | Transmit ground plane. |
17 |
-4000 |
-5065 |
TX_DI12 | Differential input data, transmit channel 12 positive. |
18 |
-3500 |
-5065 |
TX_DIN12 | Differential intput data, transmit channel 12 negative. |
19 |
-3000 |
-5065 |
TX_DI10 | Differential input data, transmit channel 10 positive. |
20 |
-2500 |
-5065 |
TX_DIN10 | Differential input data, transmit channel 10 negative. |
21 |
-2000 |
-5065 |
TX2_SCK | Transmit device 2 serial digital clock. |
22 |
-1500 |
-5065 |
TX_DI7 | Differential input data, transmit channel 7 positive. |
23 |
-1000 |
-5065 |
TX_DIN7 | Differential input data, transmit channel 7 negative. |
24 |
-500 |
-5065 |
TX_DI5 | Differential input data, transmit channel 5 positive. |
25 |
0 |
-5065 |
TX_DIN5 | Differential input data, transmit channel 5 negative. |
26 |
500 |
-5065 |
TX1_MISO | Serial digital programming output for transmitter 1. |
27 |
1000 |
-5065 |
TX_DI3 | Differential input data, transmit channel 3 positive. |
28 |
1500 |
-5065 |
TX_DIN3 | Differential input data, transmit channel 3 negative. |
29 |
2000 |
-5065 |
TX_DI1 | Differential input data, transmit channel 1 positive. |
30 |
2500 |
-5065 |
TX_DIN1 | Differential input data, transmit channel 1 negative. |
31 |
3000 |
-5065 |
TX_VDD | Transmit power supply (+3.3V). |
32 |
3500 |
-5065 |
TX_GND | Transmit ground plane. |
33 |
4000 |
-5065 |
TX_VDD | Transmit power supply (+3.3V). |
34 |
-3750 |
-4565 |
TX_DI11 | Differential input data, transmit channel 11 positive. |
35 |
-3250 |
-4565 |
TX_DIN11 | Differential input data, transmit channel 11 negative. |
36 |
NA |
NA |
TX_DI9 | Differential input data, transmit channel 9 positive. |
37 |
-2250 |
-4565 |
TX_DIN9 | Differential input data, transmit channel 9 negative. |
38 |
-1750 |
-4565 |
TX_DI8 | Differential input data, transmit channel 8 positive. |
39 |
-1250 |
-4565 |
TX_DIN8 | Differential input data, transmit channel 8 negative. |
40 |
-750 |
-4565 |
TX_DI6 | Differential input data, transmit channel 6 positive. |
41 |
-250 |
-4565 |
TX_DIN6 | Differential input data, transmit channel 6 negative. |
42 |
250 |
-4565 |
TX1_SCK | Transmit device 1 serial digital clock. |
43 |
750 |
-4565 |
TX_DI4 | Differential output data, receive channel 6 positive. |
44 |
1250 |
-4565 |
TX_DIN4 | Differential output data, receive channel 8 negative. |
45 |
1750 |
-4565 |
TX_DI2 | Differential output data, receive channel 8 positive. |
46 |
2250 |
-4565 |
TX_DIN2 | Differential output data, receive channel 9 negative. |
47 |
NA |
NA |
NA | Pin removed. |
48 |
3250 |
-4565 |
TX_VDD | Transmit power supply (+3.3V). |
49 |
3750 |
-4565 |
TX_GND | Transmit ground plane. |
Fibre-Lyte with Heat Spreader
Functional Block Diagram