2x4 QPSK Mixer – Polarization Diversified Optical Hybrid
Optoplex's 2x4 polarization diversified optical hybrid (aka QPSK Mixer) mixes an incoming signal with a local oscillator. The device features a monolithic optical core integrating a PBS with an interferometer which is also widely used in Optoplex's interleavers and DPSK-demodulators. This device is athermal, colorless, data-rate independent and compact size. The four outputs of this device can be coupled with four single-ended detectors (see the function diagram below). This platform can also be extended to a 2x8 polarization diversified hybrid to incorporate with 4 pairs of balanced detectors.
The QPSK mixer is a key building block in the ever-popular polarization- and phase -diversified QPSK modulation scheme which is not only one of the leading contenders for the 100-Gb/s systems but also a significant cost-effective alternative for the 40-Gb/s systems where 10-Gb/s modulator and electronics can be used.
Key Features and Benefits
• Free-space bulk-optics design
• Purely passive (no temperature control)
• Low insertion loss
• Low phase error
• <1 ps skew
• Colorless (wavelength independent)
• Data-rate independent
Applications
• For the next-generation optical transmission system
• Key component for the optical coherent detection
Parameter
Unit
Specification
Wavelength Range (C-Band)
nm
1527 ~ 1567
Phase Difference1 (between Ik and Qk), k=x or y
degree
90±10
Insertion Loss1
(not including
connector)
S (polarization scrambled) Æ All Outputs
dB
9.5 ~ 11.5
L (45° linear polarized) Æ All Outputs
dB
9.5 ~ 11.5
Insertion Loss
Uniformity1
Among S Æ All Outputs;
Among L Æ All Outputs
dB
<0.7
Among All Others
dB
<1.0
Optical Return Loss
dB
>27
Optical Path Difference1 (Skew, among SÆ All Outputs)
ps
<1
Optical Path Difference1 (Skew, among LÆ All Outputs)
ps
<1
Polarization extinction ratio1 (for either S or L)
dB
>18
Max. Input Optical Power
mW
300
Operating Temperature Range
°C
0 ~ 65
Storage Temperature Range
°C
−40 ~ 85
Size (L x W x H)2
mm
48 x 31 x 10
Fiber Type (for S, Ix, Iy, Qx, Qy)
-
SMF-28 with 900 μm tight buffer
Fiber Type (for L)
-
PM with 900 μm loose tube
Fiber Pigtail Length
m
TBD
Connector Type
-
TBD
Note:
1. Over the stated spectral and operating temperature ranges and all polarization states.Not including six collimator sleeves extending from one longer side by ~18 mm.
商品属性 [波长] 1527 ~ 1567nm [功率] 300mW