-----The KY-PM Series
Features
l Multiple operating wavelengths
l Low half-wave voltage
l Low insertion loss
l High damage optical power
Applications
l Fiber optic sensing
l Optical fiber communication, laser coherent synthesis
l Phase Delay (Shifter)
l Quantum communication
Description
The KY-PM series electro-optic phase modulator uses the electro-optical effect of lithium niobate crystal to realize the phase modulation of optical signals, and uses titanium diffusion or proton exchange process to fabricate optical waveguides, which can realize phase modulation of double polarization or single polarization. It has the characteristics of low insertion loss, high modulation bandwidth, low half-wave voltage, and high damage optical power, and is mainly used in the fields of optical chirp control in high-speed optical communication systems, phase delay in coherent communication systems, optical sideband generation, phase modulation in quantum communication, and reduction of stimulated Brillouin scattering (SBS) in analog optical fiber communication systems.
Parameters
Parameter | Symbol | PM-08-10G | PM-10-3G | PM-10-10G | PM-15-300M | PM-15-10G | PM-15-20G |
Operating wavelength | l | 770-880nm | 1064±60 | 1550±100nm |
Insertion loss | IL | <5 dB | <4 dB | <4 dB | <4 dB |
Optical return loss | ORL | -40 dB | -45 dB | -45 dB | -45dB | -40dB | -40dB |
Operating bandwidth (-3dB). | S21 | 10GHz | 3GHz | 10GHz | 300MHz | 10GHz | 20GHz |
Rise time 10%~90% | tr | 35ps | 100ps | 35ps | 1ns | 35ps | 18ps |
Half-wave voltage Vpi@50KHz | Vπ | 5V | 4V | 4.5V | 4V | 4V | 5V |
Input impedance | ZRF | 50W | 50W | 50W | 1MW | 50W | 50W |
Electrical interface |
| 2.92mm(f) | 2.92mm(f) | 2.92mm(f) | 2pin | 2.92mm(f) | 2.92mm(f) |
Electrical return loss | S11 | <-10dB |
Input and output fibers |
| PM Panda slow axis alignment |
Fiber optic interface |
| FC/APC or customer designation |
Operating temperature | Top | -20~70°C |
Storage temperature | Tst | -40~80°C |
Electrical signal input power | Pi | <27dBm |
Maximum input optical power | Po | 20mW | 100mW | 100mW | 100mW | 100mW |
Characteristic Curve

Dimensions(Unit: mm)
Package 1 (bandwidth³ 10G)
Package 2 (bandwidth ~300M)
Ordering Information
KY-PM-WL-BW-PP-FA
WL—Working wavelength: 15-1550nm, 10-1064nm, 08-800nm
BW—Working bandwidth: 20G, 10G, 300M