DS_BPRV2125AM
Datasheet
Features
Set contains 2 balanced PIN / LA photoreceiver modules All ? ber lengths matched Very low skew
Hermetically sealed SMD package with two GPPO? connectors Dual optical input - differential rf output
AC-coupled with threshold control option
Applications
43 Gbit/s DQPSK communication systems Transponder and line card designs
Product Description
The balanced photoreceiver set BPRV2125AM consists of two pieces BPRV2125A with matched ? ber lengths. The balanced photo-receiver module BPRV2125A is a customized differential front-end for 43 Gbit/s DPSK-applications featuring high differential gain of typically 2800 V/W. The photoreceivers each contain two waveguide-integrated pin-photodiodes (PD) on a single chip and a limiting am-pli ? er (LA) within one small form factor SMD-package. The limiting ampli ? er provides a differential output voltage swing of typ.600 mV. The receivers are therefore well suited for OC-768/STM-256 system operation up to 43 Gbit/s but especially designed for DQPSK applica-tions.
The DC output voltage can be monitored for OUTN and OUTP independently. For each ampli ? er path a threshold control at a linear ampli ? cation stage should be applied to ensure an optimized differential output signal.
An excellent electrical and optical phase propagation is achieved by a total skew of lower than 5 ps between the balanced signal paths of each device and 10 ps total skew for all ? bers of the pair.
Typical Performance
Pulse Response
Frequency Response
43 Gbit/s DQPSK
Balanced Photoreceiver Set
Product Code: BPRV2125AM
0.100.050.00-0.05-0.10
A m p l i t u d e (V )
Time (ps)
16182022242628
30320
5
10
15
20253035
40
45
50
Frequency (GHz)
S i n g l e -e n d e d r e s p o n s e (d B )
Absolute Maximum Ratings
Operation Conditions
Optical and Electrical Speci? cations 1)
Notes: 1) V PD1 = V PD2 = +2.25 V, V EE = -5.2 V; V adj = -2.4 V, λ= 1550nm, T=25°C 2) Measurements performed in single ended conditions
3) Measured using Agilent 860330A 50 GHz Lightwave component analyzer 4) Evaluated from NRZ eye diagram and BER measurement at 40 Gbit/s
(BER 10-12, PRBS 231-1, back to back)
Block Diagram
Mechanical Dimensions
Pin Description
GPPO TM
Connector is a registered trademark of Corning Gilbert Inc.
PD1
THCN THCP adj OUTPDC OUTNDC
* optional blocking capacitor
A (2 : 1)
All dimensions in mm
LC/PC
Accessories
The u2t Evaluation Kit EVA-BPRV serves as easy-to-use utility to cha-
racterize a single u2t photoreceiver BPRV2125A under laboratory con-
ditions. The kit consists of a PCB (printed circuit board), a DC cable set
and 4 socket head screws 4-40 UNC (see picture).
Ordering Information
Please use the following table to select your required con? guration of the balanced photoreceiver set. BPRV2125 A M – GM – LPH
speci? es optical connector
LPH = LP/PC connector
speci? es rf connector
GPPO TM connector (standard)
=male
GM
speci? es set
M = Set containing 2 Balanced Photoreceivers, all ? ber lengths matched
blank = single Balanced Photoreceiver (standard)
For the Evaluation kit please use the following code.
EVA – BPRV
speci? es matching photodetector / photoreceiver type
GPPO TM is a registered trademark of Corning Gilbert Inc.
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