Scanning Characteristics of Fiber-Optic Interferometric Phased Array Based on Phase Modulation

Yuanzhong Ren; Jinhua Chai

doi:10.3788/LOP56.152502

Laser & Optoelectronics Progress, Volume. 56, Issue 15, 152502(2019)

Scanning Characteristics of Fiber-Optic Interferometric Phased Array Based on Phase Modulation

Yuanzhong Ren¹ and Jinhua Chai^2、*

Author Affiliations

¹ Graduate Student Brigade, PLA Army Academy of Artillery and Air Defense, Hefei, Anhui 230031, China

² Electronic Engineering Teaching and Research Section, PLA Army Academy of Artillery and Air Defense, Hefei, Anhui 230031, China

show less

Abstract Get PDF(in Chinese)

Figures & Tables(8)

Fig. 1. Scanning control schematic of N-beam fiber-optic interferometric phased array

Download full size

Fig. 2. Charging scheme of phase modulator. (a) Traditional charging scheme; (b) [-π, π] charging scheme

Download full size

Fig. 3. Light intensity jitter under different modulation coefficients ψ0. (a) ψ0=0.3; (b) ψ0=0.1; (c) ψ0=0.5; (d) ψ0=1

Download full size

Fig. 4. Relationship between different modulation coefficients ψ0 and maximum jitters of light intensityat V=0. (a) N=8; (b) N=50

Download full size

Table 1. Comparison of three charging schemes

View table

Table 1. Comparison of three charging schemes

Beams of N	Voltage of traditionalcharging scheme(N-1)ΔV /V	Voltage of 2πcharging schemeΔV /V	Voltage of [-π,π]charging schemeΔV' /V	Value of m
1	0	0	-3.24	0
2	52.26	0.42	-2.82	8
3	104.52	0.84	-2.40	16
4	156.77	1.25	-1.99	24
5	261.30	1.67	-1.57	32
6	313.55	2.09	-1.14	40
7	365.81	2.51	-0.73	48
8	418.06	2.93	-0.31	56
9	470.32	3.34	0.10	64
10	522.58	3.76	0.52	72
11	574.84	4.18	0.94	80
12	627.10	4.60	1.34	88
13	679.36	5.01	1.77	96
14	731.61	5.43	2.19	104
15	783.87	5.85	2.61	112
16	836.13	6.27	3.03	120
17	888.39	0.21	-3.03	129
︙	︙	︙	︙	︙
N	(N-1)ΔV	(n-1)ΔV%2V_π	(n-1)ΔV%2V_π-V_π	[ΔV_n/2V_π]

Table 2. Scanning angles for different l/d and d1
View table
Table 2. Scanning angles for different l/d and d1
d₁ /μm θ_max /mrad
l/d =100 l/d =500 l/d =1000 l/d =2000 l/d =3000 l/d =5000
125 2.05 10.3 20.5 41.0 61.4 102
250 1.03 5.13 10.3 20.5 30.7 51.2
500 0.512 2.56 5.12 10.3 15.4 25.6
1000 0.256 1.28 2.56 5.12 7.69 12.8

Table 3. Relationship between ψ0 and θ'max

View table

Table 3. Relationship between ψ0 and θ'max

ψ₀	θ'_max /mrad (all beams load modulation signals)
ψ₀	N=2 (only one loading signal)	N=2	N=3	N=4	N=8	N=50
0.05	0.197	0.15	0.089	0.064	0.031	0.00491
0.1	0.394	0.3	0.18	0.129	0.062	0.00983
0.2	0.789	0.6	0.36	0.258	0.124	0.0197
0.3	1.18	0.91	0.53	0.387	0.186	0.0295
0.4	1.58	1.21	0.7	0.516	0.248	0.0393
0.5	1.97	1.52	0.88	0.64	0.31	0.0491
π/4	3.1	2.39	1.38	1.01	0.488	0.0772
1	3.95	3.04	1.77	1.29	0.621	0.0983
π/2	6.2	4.77	2.8	2.02	0.975	0.154
π	7.9	9.55	5.6	4.05	1.95	0.309

Table 4. Resolutions corresponding to different ψ0 and N

View table

Table 4. Resolutions corresponding to different ψ0 and N

ψ₀	p (all beams load modulation signals)
ψ₀	N=2 (only one loading signal)	N=2	N=3	N=4	N=8	N=50
0.05	62.8	41.33	69.66	96.87	199.99	1262.67
0.1	31.4	20.67	34.44	48.06	100.00	630.69
0.2	15.7	10.33	17.22	24.03	50.00	314.71
0.3	10.5	6.81	11.70	16.02	33.33	210.16
0.4	7.8	5.12	8.86	12.01	25.00	157.75
0.5	6.28	4.08	7.05	9.69	20.00	126.27
π/4	4	2.59	4.49	6.14	12.70	80.31
1	3.1	2.04	3.50	4.81	9.98	63.07
π/2	2	1.30	2.21	3.07	6.36	40.26
π	1	0.65	1.11	1.53	3.18	20.06

Tools

Get Citation

Copy Citation Text

Yuanzhong Ren, Jinhua Chai. Scanning Characteristics of Fiber-Optic Interferometric Phased Array Based on Phase Modulation[J]. Laser & Optoelectronics Progress, 2019, 56(15): 152502

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites