40Gb/s DQPSK Receiver
Description
The integrated DQPSK receiver incorporates an optical phase demodulator (delay-line interferometer or DLI) with 2 pairs of balanced photo-diodes and 2 linear TIAs into a single butterfly package. Compared with the currently available discrete solution in which a separate DLI and a separate receiver are used, the integrated DQPSK receiver eliminates labor intensive fiber routing and coupling (between the DLI and the balanced receiver) as well as the skew control. Moreover, the integrated DQPSK receiver offers a smaller footprint suitable for today’s demanding high speed transponder applications.
The optical phase demodulator is based on Optoplex’s proprietary technology with high tuning speed (up to ms range) to achieve superior optical and thermal performance. Free space optical alignment is employed to couple the optical outputs from the DLI directly into the waveguide-based balanced photodiodes.
Differential TIAs with bandwidth control, AGC, MGC and PLD are used in the integrated receiver. The high speed interface (RF output) is CPW-SMT with pin dimensions compatible with OIF2009.033.05 IA for 100-Gb/s coherent receiver.
The FSR of the DQPSK receivers can be customer specific, such as 21.5, 21.9, 25, or 28GHz, etc. A colorless version with the spectrum peaks aligned to 25-GHz ITU grid is also available upon request.
Features and Benefits of 40Gb/s DQPSK Receiver
Fast tuning speed
Low PDPS and TDFS
High extinction ratio
Small skew
High bandwidth
Built-in AGC/MGC and PLD
Small footprint
CPW-SMT output interface
Low power consumption
Applications
40G DQPSK Transponder
100G DP-DQPSK transponder
DQPSK demodulation
Standard Specifications of DQPSK Receiver
Parameter
Unit
Specification1
Wavelength Range (C-band)
nm
1525-1565 Free Spectral Range (typical)2
GHz
21.5, 25, 33.3, 43, 50, 57, 65, 66.7
Temperature Dependent Frequency Shift
GHz
< 10
Extinction Ratio
dB
> 16
Skew
ps
< 1.0
Phase Tuning Range
FSR
> 1.5
Polarization Dependent Phase Shift
deg
< 5
Differential Conversion Gain
V/W
> 1500
Differential Output Eye Amplitude
mVpp
550
DC Responsivity @ Optimum DLI Phase
A/W
> 0.2
Optical Input Power
dBm
-6 to +8
Polarization Dependent Loss
dB
< 0.6
Optical Return Loss
dB
> 27
Bit Rate (NRZ-DPSK)
Gbps
43
O-E Bandwidth (S21 3dB Cut-off Frequency)
GHz
> 28
Photodiode Dark Current (per PD)
nA
< 100
Electrical Return Loss (S22)
dB
-10 (DC-20GHz)
-4 (20-45GHz)Amplifier Supply Voltage
V
-5.2
Power Consumption
W
< 1.5
Phase Tuning Speed
s
< 1
OSNR Performance
dB
20
Package Dimensions (excluding collimator sleeves and electrical pins)
mm
50 x 30 x 7.5
Over the stated spectral and operating temperature ranges and all polarization states.Notes:
Other FSR available upon request.
商品属性 [波长] 1520 -1570nm