Fujitsu FIM24721 Series Installation and operating instructions

FUJITSU OPTICAL COMPONENTS CONFIDENTIAL
Micro Integrated Coherent Receiver
Application Note
Fujitsu Optical Components Limited
April 23rd, 2018
1-1 Kamikodanaka 4-chome, Nakahara-ku, Kawasaki, 211-8588, Japan
Tel:[phone] Fax:[phone]
http://jp.fujitsu.com/foc/en/
FIM24721, FIM24731, FIM24723,FIM24733 series
This document contains Confidential Information which is proprietary to FUJITSU OPTICAL
COMPONENTS LIMITED, its subsidiaries and affiliates. No part of its contents may be disclosed or
conveyed to, used by or copied for, any third party without the prior written permission of
FUJITSU OPTICAL COMPONENTS LIMITED.
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FUJITSU OPTICAL COMPONENTS CONFIDENTIAL PS-15-349-01
General Safety Concerns
2
GENERAL SAFETY CONCERNS
This Receiver module is very sensitive to “Electrical damage”.
The following procedures are required to work the device safely.
Electro-Static Discharge (ESD)
ESD precautions must be taken for AC and DC pins when handling a
Integrated receiver. The use of ground straps when using test
equipment and test benches that have been properly grounds.
DC power supply surge protection
Photo-diode and TIA DC pins must be connected the serge suppression
filter between all DC power supply.
Turn off the power while Connecting Operation
DC power must be turned off prior connecting and disconnecting any
electrical cables and optical fiber.
AC power noise protections
All DC power supply grounds and DUT ground must be connected with
electrical cables.
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FUJITSU OPTICAL COMPONENTS CONFIDENTIAL
Structure of Micro ICR
Micro Integrated Coherent Receiver (ICR) FIM24721 / FIM24731 / FIM24723 /
FIM24733 series are configured with following functions, control pins, monitor
pins and power supply pins.
■Functions
- Based on OIF projects
- Eight(8) photo-detectors, comprised of 4 sets of balanced detectors
- Four(4) linear amplifiers with differential outputs
- Two(2) ninety degree hybrid mixers with differential outputs
- Apolarization splitter element,
separating the input signal into two orthogonal polarizations,
with each polarization delivered to a hybrid mixer
- A power splitter,
splitting the local oscillator power equally to the two hybrid mixers
- Automatic Gain Control (AGC) and Manual Gain Control (MGC)
- User settable independent output voltage swing adjustment
for each of the four outputs
- Peak indicators for each output
- DC blocker for each output
- All above is in one hermetically sealed package
- Variable optical attenuator (VOA)
- Input signal power monitor photodiode (MPD)
■Control pins
- Gain control mode selection
- Gain adjustment in MGC mode
- Output voltage swing adjustment in AGC mode
- Output shutdown
■Monitor pins
- Peak indicator for output
- Input signal power monitor
■Power supply pins
- Photodiode power supply voltages
- Amplifier power supply voltages
3PS-15-349-01
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FUJITSU OPTICAL COMPONENTS CONFIDENTIAL
Structure of Micro ICR
4PS-15-349-01
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Note 1: This diagram represents X channel. Y
channel has same diagram.
Note 2: This function controls XI, XQ, YI and
YQ channels simultaneously.

FUJITSU OPTICAL COMPONENTS CONFIDENTIAL
Structure of Micro ICR
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■Dimensions
PS-15-349-01
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FUJITSU OPTICAL COMPONENTS CONFIDENTIAL
Pin functions of Micro ICR
6PS-15-349-01
6
DC pins
RF pins
No
NAME
FUNCTION
No
Name
1
RFU
Reserved
for Future Use
1
GND
2
RFU
Reserved
for Future Use
2
XIp
3
MC/AGC
MGC/AGC
Selection
3
XIn
4
MPD+
Monitor
Photodiode Cathode
4
GND
5
MPD
-
Monitor
Photodiode Anode
5
XQp
6
VPD_YIn
Photodiode
power supply (YIn)
6
XQn
7
VPD_YIp
Photodiode
power supply (YIp)
7
GND
8
VPD_YQp
Photodiode
power supply (YQp)
8
YIp
9
VPD_YQn
Photodiode
power supply (YQn)
9
YIn
10
PI
-YI
Peak
Indicator YI
10
GND
11
GA
-YI
Gain
Adjust YI
11
YQp
12
OA
-YI
Output
Amplitude Adjust YI
12
YQn
13
VCC_Y
Amplifier
power supply (YI and YQ)
13
GND
14
GND
Ground
15
OA
-YQ
Output
Amplitude Adjust YQ
16
GA
-YQ
Gain
Adjust YQ
17
PI
-YQ
Peak
Indicator YQ
18
PI
-XI
Peak
Indicator XI
19
GA
-XI
Gain
Adjust XI
20
OA
-XI
Output
Amplitude Adjust XI
21
GND
Ground
22
VCC_X
Amplifier
power supply (XI and XQ)
23
OA
-XQ
Output
Amplitude Adjust XQ
24
GA_XQ
Gain
Adjust XQ
25
PI
-XQ
Peak
Indicator XQ
26
VPD_XIn
Photodiode
power supply (XIn)
27
VPD_XIp
Photodiode
power supply (XIp)
28
VPD_XQp
Photodiode
power supply (XQp)
29
VPD_XQn
Photodiode
power supply (XQn)
30
VOA
2
VOA
GND
31
VOA
1
VOA
control
32
SD
Shutdown
33
RFU
Reserved
for Future Use
34
RFU
Reserved
for Future Use
: Control pins
: Monitor pins
: Power supply pins

FUJITSU OPTICAL COMPONENTS CONFIDENTIAL
Control description of Micro ICR
■Control terminals
Function Pin # Symbol Min Typ Max Unit
Gain control
mode selection
(Digital control)
MGC mode 3 MC/AGC 0 - 0.8 V
AGC mode 2 - Vcc
Gain adjustment
in MGC mode
(Analog control)
11
16
19
24
GA_YI
GA_YQ
GA_XI
GA_XQ
0 - Vcc V
Output voltage
swing adjustment
in AGC mode
(Analog control)
12
15
20
23
OA_YI
OA_YQ
OA_XI
OA_XQ
0.5 - 2 V
Output shutdown
(Digital control)
Shutdown
enable 32 SD 0 - 0.8 V
Shutdown
disable 2 - Vcc
7
EQUIVALENT CIRCUITS OF CONTROL PINS
PS-15-349-01
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FUJITSU OPTICAL COMPONENTS CONFIDENTIAL
Monitor description of Micro ICR
■Peak indicator for output
8PS-15-349-01
8

FUJITSU OPTICAL COMPONENTS CONFIDENTIAL
Recommended electrical circuit of Micro ICR
9PS-15-349-01 9

FUJITSU OPTICAL COMPONENTS CONFIDENTIAL
Recommended power up sequence of Micro ICR
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The Micro ICR should be powered up with the following sequence.
1. Prevent any electrical surge with earth band etc.
2. Confirm the Micro ICR and evaluation board are not connected to any
evaluation system. i.e. DC/ AC power supplies/ monitors, optical outputs and
other equipment
3. Turn on main switches of DC/ AC power supplies/ monitors.
4. Set DC power supplies to 0 [V]
5. Operate DC power supplies outputs
6. Connect the Micro ICR and evaluation board to evaluation system. i.e. DC/
AC power supply/ monitor and optical input
7. Set photodiode power supplies;
VPD_XIp, VPD_XIn, VPD_XQp, VPD_XQn,
VPD_YIp, VPD_YIn, VPD_YQp, VPD_YQn,
from 0 [V] to +5 [V] gradually.
8. Set amplifier power supplies ;
VCC_X, VCC_Y,
from 0 [V] to +3.3 [V] gradually.
9. Turn on optical input.
10.Adjust control terminal voltages;
GA_XI, GA_XQ, GA_YI, GA_YQ,
OA_XI, OA_XQ, OA_YI, OA_YQ,
MC/AGC, SD,
to get proper performance.
Note: Step 8 can be done simultaneously with step 7 though, if amplifier
power supplies are up prior to photodiode power supplies, the amplifiers
and photodiodes will be seriously damaged.
PS-15-349-01
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